[INFO] fetching crate arbtest 0.3.1...
[INFO] checking arbtest-0.3.1 against master#b286722878e18db29a7fbe672be7c4d3b02e8e4d for pr-127655
[INFO] extracting crate arbtest 0.3.1 into /workspace/builds/worker-1-tc1/source
[INFO] validating manifest of crates.io crate arbtest 0.3.1 on toolchain b286722878e18db29a7fbe672be7c4d3b02e8e4d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b286722878e18db29a7fbe672be7c4d3b02e8e4d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate arbtest 0.3.1
[INFO] finished tweaking crates.io crate arbtest 0.3.1
[INFO] tweaked toml for crates.io crate arbtest 0.3.1 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate crates.io crate arbtest 0.3.1 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" "+b286722878e18db29a7fbe672be7c4d3b02e8e4d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded regex-lite v0.1.5
[INFO] [stderr]   Downloaded syn v2.0.50
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:dff56e7819e73ed36160586b3445e93eb0be776c16704aeeded9c3fb668b2384" "/opt/rustwide/cargo-home/bin/cargo" "+b286722878e18db29a7fbe672be7c4d3b02e8e4d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5883033be1b8af9a614c93f83f2ca6d1d580f2eccc07d3c01c0b7db4a51b1525
[INFO] running `Command { std: "docker" "start" "-a" "5883033be1b8af9a614c93f83f2ca6d1d580f2eccc07d3c01c0b7db4a51b1525", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5883033be1b8af9a614c93f83f2ca6d1d580f2eccc07d3c01c0b7db4a51b1525", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5883033be1b8af9a614c93f83f2ca6d1d580f2eccc07d3c01c0b7db4a51b1525", kill_on_drop: false }`
[INFO] [stdout] 5883033be1b8af9a614c93f83f2ca6d1d580f2eccc07d3c01c0b7db4a51b1525
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:dff56e7819e73ed36160586b3445e93eb0be776c16704aeeded9c3fb668b2384" "/opt/rustwide/cargo-home/bin/cargo" "+b286722878e18db29a7fbe672be7c4d3b02e8e4d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 312ace3bf7463dd306fbc6125588f8979e8936f119bfa02266088eeafbb53a51
[INFO] running `Command { std: "docker" "start" "-a" "312ace3bf7463dd306fbc6125588f8979e8936f119bfa02266088eeafbb53a51", kill_on_drop: false }`
[INFO] [stderr]     Checking regex-lite v0.1.5
[INFO] [stderr]    Compiling syn v2.0.50
[INFO] [stderr]    Compiling derive_arbitrary v1.3.2
[INFO] [stderr]     Checking arbitrary v1.3.2
[INFO] [stderr]     Checking arbtest v0.3.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.72s
[INFO] running `Command { std: "docker" "inspect" "312ace3bf7463dd306fbc6125588f8979e8936f119bfa02266088eeafbb53a51", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "312ace3bf7463dd306fbc6125588f8979e8936f119bfa02266088eeafbb53a51", kill_on_drop: false }`
[INFO] [stdout] 312ace3bf7463dd306fbc6125588f8979e8936f119bfa02266088eeafbb53a51
