[INFO] fetching crate microtune 0.1.0...
[INFO] checking microtune-0.1.0 against master#350d0ef0ec0493e6d21cfb265cb8211a0e74d766 for pr-145342-1
[INFO] extracting crate microtune 0.1.0 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate microtune 0.1.0
[INFO] finished tweaking crates.io crate microtune 0.1.0
[INFO] tweaked toml for crates.io crate microtune 0.1.0 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate microtune 0.1.0 on toolchain 350d0ef0ec0493e6d21cfb265cb8211a0e74d766
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate microtune 0.1.0 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" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8056034a8807e628695aecd95dd69f7ce43fe3b6bfea794ff9a6222c2df51470
[INFO] running `Command { std: "docker" "start" "-a" "8056034a8807e628695aecd95dd69f7ce43fe3b6bfea794ff9a6222c2df51470", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8056034a8807e628695aecd95dd69f7ce43fe3b6bfea794ff9a6222c2df51470", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8056034a8807e628695aecd95dd69f7ce43fe3b6bfea794ff9a6222c2df51470", kill_on_drop: false }`
[INFO] [stdout] 8056034a8807e628695aecd95dd69f7ce43fe3b6bfea794ff9a6222c2df51470
[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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] be31dd397a475943a50bea8cdeb378b56140b3e90239327eda7462c85fd209a8
[INFO] running `Command { std: "docker" "start" "-a" "be31dd397a475943a50bea8cdeb378b56140b3e90239327eda7462c85fd209a8", kill_on_drop: false }`
[INFO] [stderr]     Checking microtune v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.16s
[INFO] running `Command { std: "docker" "inspect" "be31dd397a475943a50bea8cdeb378b56140b3e90239327eda7462c85fd209a8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "be31dd397a475943a50bea8cdeb378b56140b3e90239327eda7462c85fd209a8", kill_on_drop: false }`
[INFO] [stdout] be31dd397a475943a50bea8cdeb378b56140b3e90239327eda7462c85fd209a8