[INFO] cloning repository https://github.com/cputnam-a11y/rust_mp3
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/cputnam-a11y/rust_mp3" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcputnam-a11y%2Frust_mp3", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcputnam-a11y%2Frust_mp3'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4ab538078ac698b8e57a17ee639ffdf25ade1639
[INFO] checking cputnam-a11y/rust_mp3 against master#b115ea2e6a07e440e7cc18b08644fc0a2265391b for pr-139493-4
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcputnam-a11y%2Frust_mp3" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/cputnam-a11y/rust_mp3
[INFO] finished tweaking git repo https://github.com/cputnam-a11y/rust_mp3
[INFO] tweaked toml for git repo https://github.com/cputnam-a11y/rust_mp3 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/cputnam-a11y/rust_mp3 on toolchain b115ea2e6a07e440e7cc18b08644fc0a2265391b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b115ea2e6a07e440e7cc18b08644fc0a2265391b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/cputnam-a11y/rust_mp3 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" "+b115ea2e6a07e440e7cc18b08644fc0a2265391b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded wasm-bindgen-shared v0.2.89
[INFO] [stderr]   Downloaded wasm-bindgen-macro v0.2.89
[INFO] [stderr]   Downloaded quote v1.0.33
[INFO] [stderr]   Downloaded scoped-tls v1.0.1
[INFO] [stderr]   Downloaded wasm-bindgen-futures v0.4.39
[INFO] [stderr]   Downloaded wasm-bindgen-test v0.3.39
[INFO] [stderr]   Downloaded log v0.4.20
[INFO] [stderr]   Downloaded proc-macro2 v1.0.70
[INFO] [stderr]   Downloaded wasm-bindgen-test-macro v0.3.39
[INFO] [stderr]   Downloaded wasm-bindgen-backend v0.2.89
[INFO] [stderr]   Downloaded wasm-bindgen-macro-support v0.2.89
[INFO] [stderr]   Downloaded wasm-bindgen v0.2.89
[INFO] [stderr]   Downloaded syn v2.0.39
[INFO] [stderr]   Downloaded js-sys v0.3.66
[INFO] [stderr]   Downloaded bumpalo v3.14.0
[INFO] [stderr]   Downloaded web-sys v0.3.66
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/source:/opt/rustwide/workdir:ro,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" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+b115ea2e6a07e440e7cc18b08644fc0a2265391b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 33216d8102007cf201688a6580aafe78699f0764d95d53425ca98495130d7ce2
[INFO] running `Command { std: "docker" "start" "-a" "33216d8102007cf201688a6580aafe78699f0764d95d53425ca98495130d7ce2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "33216d8102007cf201688a6580aafe78699f0764d95d53425ca98495130d7ce2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "33216d8102007cf201688a6580aafe78699f0764d95d53425ca98495130d7ce2", kill_on_drop: false }`
[INFO] [stdout] 33216d8102007cf201688a6580aafe78699f0764d95d53425ca98495130d7ce2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/source:/opt/rustwide/workdir:ro,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" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-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" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+b115ea2e6a07e440e7cc18b08644fc0a2265391b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8a8da1c77067fcd92740981a9e72d09b1e083bfb9dde0298ea8184b3f0865bc3
[INFO] running `Command { std: "docker" "start" "-a" "8a8da1c77067fcd92740981a9e72d09b1e083bfb9dde0298ea8184b3f0865bc3", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.70
[INFO] [stderr]    Compiling wasm-bindgen-shared v0.2.89
[INFO] [stderr]    Compiling log v0.4.20
[INFO] [stderr]    Compiling bumpalo v3.14.0
[INFO] [stderr]    Compiling wasm-bindgen v0.2.89
[INFO] [stderr]     Checking scoped-tls v1.0.1
[INFO] [stderr]    Compiling quote v1.0.33
[INFO] [stderr]    Compiling syn v2.0.39
[INFO] [stderr]    Compiling wasm-bindgen-backend v0.2.89
[INFO] [stderr]    Compiling wasm-bindgen-test-macro v0.3.39
[INFO] [stderr]    Compiling wasm-bindgen-macro-support v0.2.89
[INFO] [stderr]    Compiling wasm-bindgen-macro v0.2.89
[INFO] [stderr]     Checking js-sys v0.3.66
[INFO] [stderr]     Checking console_error_panic_hook v0.1.7
[INFO] [stderr]     Checking wasm-bindgen-futures v0.4.39
[INFO] [stderr]     Checking web-sys v0.3.66
[INFO] [stderr]     Checking wasm-bindgen-test v0.3.39
[INFO] [stderr]     Checking rust-mp3 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function `set_panic_hook` is never used
[INFO] [stdout]  --> src/utils.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn set_panic_hook() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `set_panic_hook` is never used
[INFO] [stdout]  --> src/utils.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn set_panic_hook() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 14.45s
[INFO] running `Command { std: "docker" "inspect" "8a8da1c77067fcd92740981a9e72d09b1e083bfb9dde0298ea8184b3f0865bc3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8a8da1c77067fcd92740981a9e72d09b1e083bfb9dde0298ea8184b3f0865bc3", kill_on_drop: false }`
[INFO] [stdout] 8a8da1c77067fcd92740981a9e72d09b1e083bfb9dde0298ea8184b3f0865bc3