[INFO] fetching crate arcmutex 0.2.0...
[INFO] checking arcmutex-0.2.0 against try#e0f03aec47b100bc29555561bd62a99d1bc6aca5 for pr-86231
[INFO] extracting crate arcmutex 0.2.0 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate arcmutex 0.2.0 on toolchain e0f03aec47b100bc29555561bd62a99d1bc6aca5
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+e0f03aec47b100bc29555561bd62a99d1bc6aca5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate arcmutex 0.2.0
[INFO] finished tweaking crates.io crate arcmutex 0.2.0
[INFO] tweaked toml for crates.io crate arcmutex 0.2.0 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+e0f03aec47b100bc29555561bd62a99d1bc6aca5" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+e0f03aec47b100bc29555561bd62a99d1bc6aca5" "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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+e0f03aec47b100bc29555561bd62a99d1bc6aca5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1f22b5e16895e4cb045c8683ce5c88d98da4b1332aaee6cf776cd7525a9557ad
[INFO] running `Command { std: "docker" "start" "-a" "1f22b5e16895e4cb045c8683ce5c88d98da4b1332aaee6cf776cd7525a9557ad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1f22b5e16895e4cb045c8683ce5c88d98da4b1332aaee6cf776cd7525a9557ad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1f22b5e16895e4cb045c8683ce5c88d98da4b1332aaee6cf776cd7525a9557ad", kill_on_drop: false }`
[INFO] [stdout] 1f22b5e16895e4cb045c8683ce5c88d98da4b1332aaee6cf776cd7525a9557ad
[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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+e0f03aec47b100bc29555561bd62a99d1bc6aca5" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c8f568c0c240d5b38f37291b0cefeb22c4d2a11b2cee9b83440a20d4fc7b7052
[INFO] running `Command { std: "docker" "start" "-a" "c8f568c0c240d5b38f37291b0cefeb22c4d2a11b2cee9b83440a20d4fc7b7052", kill_on_drop: false }`
[INFO] [stderr]     Checking arcmutex v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.47s
[INFO] running `Command { std: "docker" "inspect" "c8f568c0c240d5b38f37291b0cefeb22c4d2a11b2cee9b83440a20d4fc7b7052", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c8f568c0c240d5b38f37291b0cefeb22c4d2a11b2cee9b83440a20d4fc7b7052", kill_on_drop: false }`
[INFO] [stdout] c8f568c0c240d5b38f37291b0cefeb22c4d2a11b2cee9b83440a20d4fc7b7052