[INFO] fetching crate trees-lang 0.2.5...
[INFO] checking trees-lang-0.2.5 against master#cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c for pr-143170
[INFO] extracting crate trees-lang 0.2.5 into /workspace/builds/worker-5-tc1/source
[INFO] started tweaking crates.io crate trees-lang 0.2.5
[INFO] finished tweaking crates.io crate trees-lang 0.2.5
[INFO] tweaked toml for crates.io crate trees-lang 0.2.5 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate trees-lang 0.2.5 on toolchain cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate trees-lang 0.2.5 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" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 567b0b6bb3a2f1780f4b2d802f5fc96232888b09791b2434eeb72a9dc9e38600
[INFO] running `Command { std: "docker" "start" "-a" "567b0b6bb3a2f1780f4b2d802f5fc96232888b09791b2434eeb72a9dc9e38600", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "567b0b6bb3a2f1780f4b2d802f5fc96232888b09791b2434eeb72a9dc9e38600", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "567b0b6bb3a2f1780f4b2d802f5fc96232888b09791b2434eeb72a9dc9e38600", kill_on_drop: false }`
[INFO] [stdout] 567b0b6bb3a2f1780f4b2d802f5fc96232888b09791b2434eeb72a9dc9e38600
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 51e7688813abc20cb8753b937f024b8bcefb61c047066749441019fc554d0348
[INFO] running `Command { std: "docker" "start" "-a" "51e7688813abc20cb8753b937f024b8bcefb61c047066749441019fc554d0348", kill_on_drop: false }`
[INFO] [stderr]     Checking trees-lang v0.2.5 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `config`
[INFO] [stdout]    --> src/compile.rs:569:3
[INFO] [stdout]     |
[INFO] [stdout] 569 |   config: &CompileConfig,
[INFO] [stdout]     |   ^^^^^^ help: if this is intentional, prefix it with an underscore: `_config`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `config`
[INFO] [stdout]    --> src/compile.rs:569:3
[INFO] [stdout]     |
[INFO] [stdout] 569 |   config: &CompileConfig,
[INFO] [stdout]     |   ^^^^^^ help: if this is intentional, prefix it with an underscore: `_config`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.48s
[INFO] running `Command { std: "docker" "inspect" "51e7688813abc20cb8753b937f024b8bcefb61c047066749441019fc554d0348", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "51e7688813abc20cb8753b937f024b8bcefb61c047066749441019fc554d0348", kill_on_drop: false }`
[INFO] [stdout] 51e7688813abc20cb8753b937f024b8bcefb61c047066749441019fc554d0348