<p dir="auto">C:\Users\iamsh&gt;deno upgrade<br>
Looking up latest version</p>
<p dir="auto">============================================================<br>
Deno has panicked. This is a bug in Deno. Please report this<br>
at <a href="https://github.com/denoland/deno/issues/new">https://github.com/denoland/deno/issues/new</a>.<br>
If you can reliably reproduce this panic, include the<br>
reproduction steps and re-run with the RUST_BACKTRACE=1 env<br>
var set and include the backtrace in your report.</p>
<p dir="auto">Platform: windows x86_64<br>
Version: 1.28.1<br>
Args: ["deno", "upgrade"]</p>
<p dir="auto">thread 'main' panicked at 'called <code class="notranslate">Result::unwrap()</code> on an <code class="notranslate">Err</code> value: Error("unexpected character '&lt;' while parsing major version number")', cli\tools\upgrade.rs:306:62<br>
note: run with <code class="notranslate">RUST_BACKTRACE=1</code> environment variable to display a backtrace</p>
<p dir="auto">I was trying to upgrade my deno version.</p>
<div class="highlight highlight-source-shell notranslate position-relative overflow-auto" dir="auto" data-snippet-clipboard-copy-content="RUST_BACKTRACE=1 deno upgrade"><pre class="notranslate">RUST_BACKTRACE=1 deno upgrade</pre></div>
<p dir="auto">output:</p>
<div class="highlight highlight-source-shell notranslate position-relative overflow-auto" dir="auto" data-snippet-clipboard-copy-content="Looking up latest version

============================================================
Deno has panicked. This is a bug in Deno. Please report this
at https://github.com/denoland/deno/issues/new.
If you can reliably reproduce this panic, include the
reproduction steps and re-run with the RUST_BACKTRACE=1 env
var set and include the backtrace in your report.

Platform: macos x86_64
Version: 1.28.3
Args: [&quot;deno&quot;, &quot;upgrade&quot;]

thread 'main' panicked at 'called `Result::unwrap()` on an `Err` value: Error(&quot;unexpected character '&lt;' while parsing major version number&quot;)', cli/tools/upgrade.rs:304:62
stack backtrace:
   0: _rust_begin_unwind
   1: core::panicking::panic_fmt
   2: core::result::unwrap_failed
   3: core::result::Result&lt;T,E&gt;::unwrap
   4: &lt;core::future::from_generator::GenFuture&lt;T&gt; as core::future::future::Future&gt;::poll
   5: deno::main::{{closure}}
   6: &lt;core::future::from_generator::GenFuture&lt;T&gt; as core::future::future::Future&gt;::poll
   7: deno_runtime::tokio_util::run_local
   8: deno::main
note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace."><pre class="notranslate">Looking up latest version

============================================================
Deno has panicked. This is a bug <span class="pl-k">in</span> Deno. Please report this
at https://github.com/denoland/deno/issues/new.
If you can reliably reproduce this panic, include the
reproduction steps and re-run with the RUST_BACKTRACE=1 env
var <span class="pl-c1">set</span> and include the backtrace <span class="pl-k">in</span> your report.

Platform: macos x86_64
Version: 1.28.3
Args: [<span class="pl-s"><span class="pl-pds">"</span>deno<span class="pl-pds">"</span></span>, <span class="pl-s"><span class="pl-pds">"</span>upgrade<span class="pl-pds">"</span></span>]

thread <span class="pl-s"><span class="pl-pds">'</span>main<span class="pl-pds">'</span></span> panicked at <span class="pl-s"><span class="pl-pds">'</span>called `Result::unwrap()` on an `Err` value: Error("unexpected character <span class="pl-pds">'</span></span><span class="pl-k">&lt;</span><span class="pl-s"><span class="pl-pds">'</span> while parsing major version number")<span class="pl-pds">'</span></span>, cli/tools/upgrade.rs:304:62
stack backtrace:
   0: _rust_begin_unwind
   1: core::panicking::panic_fmt
   2: core::result::unwrap_failed
   3: core::result::Result<span class="pl-k">&lt;</span>T,E<span class="pl-k">&gt;</span>::unwrap
   4: <span class="pl-k">&lt;</span>core::future::from_generator::GenFuture<span class="pl-k">&lt;</span>T<span class="pl-k">&gt;</span> as core::future::future::Future<span class="pl-k">&gt;</span>::poll
   5: deno::main::{{closure}}
   6: <span class="pl-k">&lt;</span>core::future::from_generator::GenFuture<span class="pl-k">&lt;</span>T<span class="pl-k">&gt;</span> as core::future::future::Future<span class="pl-k">&gt;</span>::poll
   7: deno_runtime::tokio_util::run_local
   8: deno::main
note: Some details are omitted, run with <span class="pl-s"><span class="pl-pds">`</span>RUST_BACKTRACE=full<span class="pl-pds">`</span></span> <span class="pl-k">for</span> a verbose backtrace.</pre></div>