[INFO] cloning repository https://github.com/dotslashrayva/crucible
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/dotslashrayva/crucible" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdotslashrayva%2Fcrucible", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdotslashrayva%2Fcrucible'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2cc4d6ef90eb24455dccc2350c99aa4eb82783c4
[INFO] checking dotslashrayva/crucible against 52995a223f2919dd3e2e427231db90a257350ded for pr-129249-4
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdotslashrayva%2Fcrucible" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/dotslashrayva/crucible
[INFO] finished tweaking git repo https://github.com/dotslashrayva/crucible
[INFO] tweaked toml for git repo https://github.com/dotslashrayva/crucible written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/dotslashrayva/crucible on toolchain 52995a223f2919dd3e2e427231db90a257350ded
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+52995a223f2919dd3e2e427231db90a257350ded" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/dotslashrayva/crucible 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" "+52995a223f2919dd3e2e427231db90a257350ded" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:c0af3998e971868164375a7dfb646c9933ddd1a3bdb00fa2041266763dc1eeab" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] e607174963bc60ac048aa549d83a7062986aa0e3bf0f823eb78684b9f2ee8fa4
[INFO] running `Command { std: "docker" "start" "e607174963bc60ac048aa549d83a7062986aa0e3bf0f823eb78684b9f2ee8fa4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e607174963bc60ac048aa549d83a7062986aa0e3bf0f823eb78684b9f2ee8fa4", 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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "e607174963bc60ac048aa549d83a7062986aa0e3bf0f823eb78684b9f2ee8fa4" "/opt/rustwide/cargo-home/bin/cargo" "+52995a223f2919dd3e2e427231db90a257350ded" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e607174963bc60ac048aa549d83a7062986aa0e3bf0f823eb78684b9f2ee8fa4", 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" "e607174963bc60ac048aa549d83a7062986aa0e3bf0f823eb78684b9f2ee8fa4" "/opt/rustwide/cargo-home/bin/cargo" "+52995a223f2919dd3e2e427231db90a257350ded" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]     Checking memchr v2.7.6
[INFO] [stderr]     Checking regex-syntax v0.8.8
[INFO] [stderr]     Checking aho-corasick v1.1.4
[INFO] [stderr]     Checking regex-automata v0.4.13
[INFO] [stderr]     Checking regex v1.12.2
[INFO] [stderr]     Checking crucible v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: useless conversion to the same type: `String`
[INFO] [stdout]   --> src/frontend.rs:19:30
[INFO] [stdout]    |
[INFO] [stdout] 19 |         Err(e) => return Err(format!("Lexical error: {}", e).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] 
[INFO] [stdout] 
[INFO] [stdout] error: useless conversion to the same type: `String`
[INFO] [stdout]   --> src/frontend.rs:30:30
[INFO] [stdout]    |
[INFO] [stdout] 30 |         Err(e) => return Err(format!("Syntax error: {}", e).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] 
[INFO] [stdout] 
[INFO] [stdout] error: useless conversion to the same type: `String`
[INFO] [stdout]   --> src/frontend.rs:40:20
[INFO] [stdout]    |
[INFO] [stdout] 40 |         return Err(format!("Semantic error: {}", e).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] 
[INFO] [stdout] 
[INFO] [stdout] error: useless conversion to the same type: `String`
[INFO] [stdout]   --> src/frontend.rs:19:30
[INFO] [stdout]    |
[INFO] [stdout] 19 |         Err(e) => return Err(format!("Lexical error: {}", e).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] 
[INFO] [stdout] 
[INFO] [stdout] error: useless conversion to the same type: `String`
[INFO] [stdout]   --> src/frontend.rs:30:30
[INFO] [stdout]    |
[INFO] [stdout] 30 |         Err(e) => return Err(format!("Syntax error: {}", e).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] 
[INFO] [stdout] 
[INFO] [stdout] error: useless conversion to the same type: `String`
[INFO] [stdout]   --> src/frontend.rs:40:20
[INFO] [stdout]    |
[INFO] [stdout] 40 |         return Err(format!("Semantic error: {}", e).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] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `crucible` (bin "crucible" test) due to 3 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `crucible` (bin "crucible") due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "e607174963bc60ac048aa549d83a7062986aa0e3bf0f823eb78684b9f2ee8fa4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e607174963bc60ac048aa549d83a7062986aa0e3bf0f823eb78684b9f2ee8fa4", kill_on_drop: false }`
[INFO] [stdout] e607174963bc60ac048aa549d83a7062986aa0e3bf0f823eb78684b9f2ee8fa4
