[INFO] fetching crate iolaus 0.1.7...
[INFO] checking iolaus-0.1.7 against try#ddfd70ee3c3748e597b32f416b0d15a4f6e37685 for pr-87050
[INFO] extracting crate iolaus 0.1.7 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate iolaus 0.1.7 on toolchain ddfd70ee3c3748e597b32f416b0d15a4f6e37685
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate iolaus 0.1.7
[INFO] finished tweaking crates.io crate iolaus 0.1.7
[INFO] tweaked toml for crates.io crate iolaus 0.1.7 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a6dc11fb9cb521a2b6ce65487a30f7e2768d6cf49c5da65d663f3e14e074f5e0
[INFO] running `Command { std: "docker" "start" "-a" "a6dc11fb9cb521a2b6ce65487a30f7e2768d6cf49c5da65d663f3e14e074f5e0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a6dc11fb9cb521a2b6ce65487a30f7e2768d6cf49c5da65d663f3e14e074f5e0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a6dc11fb9cb521a2b6ce65487a30f7e2768d6cf49c5da65d663f3e14e074f5e0", kill_on_drop: false }`
[INFO] [stdout] a6dc11fb9cb521a2b6ce65487a30f7e2768d6cf49c5da65d663f3e14e074f5e0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 321bf730611e16e0ef36ca72424c6d091a1e2f074cbe67f254dcf44659d8ec8f
[INFO] running `Command { std: "docker" "start" "-a" "321bf730611e16e0ef36ca72424c6d091a1e2f074cbe67f254dcf44659d8ec8f", kill_on_drop: false }`
[INFO] [stderr]    Compiling crossbeam-utils v0.8.5
[INFO] [stderr]     Checking yaml-rust v0.4.5
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking rand v0.5.6
[INFO] [stderr]     Checking crossbeam-channel v0.5.1
[INFO] [stderr]     Checking pbr v1.0.4
[INFO] [stderr]     Checking iolaus v0.1.7 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:14:9
[INFO] [stdout]    |
[INFO] [stdout] 14 |     let mut base_path = env::current_dir().expect("Erro #0001");
[INFO] [stdout]    |         ----^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:14:9
[INFO] [stdout]    |
[INFO] [stdout] 14 |     let mut base_path = env::current_dir().expect("Erro #0001");
[INFO] [stdout]    |         ----^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.08s
[INFO] running `Command { std: "docker" "inspect" "321bf730611e16e0ef36ca72424c6d091a1e2f074cbe67f254dcf44659d8ec8f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "321bf730611e16e0ef36ca72424c6d091a1e2f074cbe67f254dcf44659d8ec8f", kill_on_drop: false }`
[INFO] [stdout] 321bf730611e16e0ef36ca72424c6d091a1e2f074cbe67f254dcf44659d8ec8f