[INFO] cloning repository https://github.com/mdtex/mdtex
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mdtex/mdtex" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmdtex%2Fmdtex", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmdtex%2Fmdtex'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ebfc8d8f362131d7df96de6c175485405cba9345
[INFO] checking mdtex/mdtex against a5689b034ad287112f709693384a37f1377eb9cc for pr-129249-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmdtex%2Fmdtex" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/mdtex/mdtex
[INFO] finished tweaking git repo https://github.com/mdtex/mdtex
[INFO] tweaked toml for git repo https://github.com/mdtex/mdtex written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/mdtex/mdtex on toolchain a5689b034ad287112f709693384a37f1377eb9cc
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a5689b034ad287112f709693384a37f1377eb9cc" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/mdtex/mdtex already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a5689b034ad287112f709693384a37f1377eb9cc" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:77db811e55d90add9212f6832c23229e3de5f1c1f9905e8cb07319ea15df73ac" "sleep" "infinity", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "start" "56fe89ec6eff982db992511bfdb635b8d4ccc1ca5e7069cf23ae1621656cc7bb", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "56fe89ec6eff982db992511bfdb635b8d4ccc1ca5e7069cf23ae1621656cc7bb" "/opt/rustwide/cargo-home/bin/cargo" "+a5689b034ad287112f709693384a37f1377eb9cc" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "56fe89ec6eff982db992511bfdb635b8d4ccc1ca5e7069cf23ae1621656cc7bb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-w" "/opt/rustwide/workdir" "--user" "0:0" "56fe89ec6eff982db992511bfdb635b8d4ccc1ca5e7069cf23ae1621656cc7bb" "/opt/rustwide/cargo-home/bin/cargo" "+a5689b034ad287112f709693384a37f1377eb9cc" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
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[INFO] [stdout] warning: field `lang` is never read
[INFO] [stdout]   --> mdtexlib/src/ir/mod.rs:23:9
[INFO] [stdout]    |
[INFO] [stdout] 22 |     BlockCode {
[INFO] [stdout]    |     --------- field in this variant
[INFO] [stdout] 23 |         lang: Option<String>,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `BlockToken` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: useless conversion to the same type: `String`
[INFO] [stdout]    --> mdtexlib/src/renderer/mod.rs:124:45
[INFO] [stdout]     |
[INFO] [stdout] 124 |                     out.push(HtmlChild::Raw(math.into()));
[INFO] [stdout]     |                                             ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this method call relies on the `impl<T> Into<T> for T` blanket implementation and type inference, which is a semver hazard as a new `impl Into<_>` that affects your type might be added in the future causing type inference errors
[INFO] [stdout]     = note: `#[deny(self_type_conversion)]` on by default
[INFO] [stdout] help: consider removing the conversion call
[INFO] [stdout]     |
[INFO] [stdout] 124 -                     out.push(HtmlChild::Raw(math.into()));
[INFO] [stdout] 124 +                     out.push(HtmlChild::Raw(math));
[INFO] [stdout]     |
[INFO] [stdout] help: you can use the fully-qualified path to avoid triggering this lint
[INFO] [stdout]     |
[INFO] [stdout] 124 -                     out.push(HtmlChild::Raw(math.into()));
[INFO] [stdout] 124 +                     out.push(HtmlChild::Raw(<String as Into<_>>::into(math)));
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: useless conversion to the same type: `String`
[INFO] [stdout]    --> mdtexlib/src/renderer/mod.rs:126:45
[INFO] [stdout]     |
[INFO] [stdout] 126 |                     out.push(HtmlChild::Raw(escape_html(&m).into()));
[INFO] [stdout]     |                                             ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this method call relies on the `impl<T> Into<T> for T` blanket implementation and type inference, which is a semver hazard as a new `impl Into<_>` that affects your type might be added in the future causing type inference errors
[INFO] [stdout] help: consider removing the conversion call
[INFO] [stdout]     |
[INFO] [stdout] 126 -                     out.push(HtmlChild::Raw(escape_html(&m).into()));
[INFO] [stdout] 126 +                     out.push(HtmlChild::Raw(escape_html(&m)));
[INFO] [stdout]     |
[INFO] [stdout] help: you can use the fully-qualified path to avoid triggering this lint
[INFO] [stdout]     |
[INFO] [stdout] 126 -                     out.push(HtmlChild::Raw(escape_html(&m).into()));
[INFO] [stdout] 126 +                     out.push(HtmlChild::Raw(<String as Into<_>>::into(escape_html(&m))));
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `mdtexlib` (lib) due to 2 previous errors; 1 warning emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: useless conversion to the same type: `String`
[INFO] [stdout]    --> mdtexlib/src/renderer/mod.rs:124:45
[INFO] [stdout]     |
[INFO] [stdout] 124 |                     out.push(HtmlChild::Raw(math.into()));
[INFO] [stdout]     |                                             ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this method call relies on the `impl<T> Into<T> for T` blanket implementation and type inference, which is a semver hazard as a new `impl Into<_>` that affects your type might be added in the future causing type inference errors
[INFO] [stdout]     = note: `#[deny(self_type_conversion)]` on by default
[INFO] [stdout] help: consider removing the conversion call
[INFO] [stdout]     |
[INFO] [stdout] 124 -                     out.push(HtmlChild::Raw(math.into()));
[INFO] [stdout] 124 +                     out.push(HtmlChild::Raw(math));
[INFO] [stdout]     |
[INFO] [stdout] help: you can use the fully-qualified path to avoid triggering this lint
[INFO] [stdout]     |
[INFO] [stdout] 124 -                     out.push(HtmlChild::Raw(math.into()));
[INFO] [stdout] 124 +                     out.push(HtmlChild::Raw(<String as Into<_>>::into(math)));
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: useless conversion to the same type: `String`
[INFO] [stdout]    --> mdtexlib/src/renderer/mod.rs:126:45
[INFO] [stdout]     |
[INFO] [stdout] 126 |                     out.push(HtmlChild::Raw(escape_html(&m).into()));
[INFO] [stdout]     |                                             ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this method call relies on the `impl<T> Into<T> for T` blanket implementation and type inference, which is a semver hazard as a new `impl Into<_>` that affects your type might be added in the future causing type inference errors
[INFO] [stdout] help: consider removing the conversion call
[INFO] [stdout]     |
[INFO] [stdout] 126 -                     out.push(HtmlChild::Raw(escape_html(&m).into()));
[INFO] [stdout] 126 +                     out.push(HtmlChild::Raw(escape_html(&m)));
[INFO] [stdout]     |
[INFO] [stdout] help: you can use the fully-qualified path to avoid triggering this lint
[INFO] [stdout]     |
[INFO] [stdout] 126 -                     out.push(HtmlChild::Raw(escape_html(&m).into()));
[INFO] [stdout] 126 +                     out.push(HtmlChild::Raw(<String as Into<_>>::into(escape_html(&m))));
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `mdtexlib` (lib test) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "56fe89ec6eff982db992511bfdb635b8d4ccc1ca5e7069cf23ae1621656cc7bb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "56fe89ec6eff982db992511bfdb635b8d4ccc1ca5e7069cf23ae1621656cc7bb", kill_on_drop: false }`
[INFO] [stdout] 56fe89ec6eff982db992511bfdb635b8d4ccc1ca5e7069cf23ae1621656cc7bb
