[INFO] fetching crate rmux 0.1.0...
[INFO] checking rmux-0.1.0 against try#8de4b308b608cded0ebccf658a0fc719bce87d4e for pr-89056
[INFO] extracting crate rmux 0.1.0 into /workspace/builds/worker-27/source
[INFO] validating manifest of crates.io crate rmux 0.1.0 on toolchain 8de4b308b608cded0ebccf658a0fc719bce87d4e
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rmux 0.1.0
[INFO] finished tweaking crates.io crate rmux 0.1.0
[INFO] tweaked toml for crates.io crate rmux 0.1.0 written to /workspace/builds/worker-27/source/Cargo.toml
[INFO] crate crates.io crate rmux 0.1.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a61be640e9285ce3dc5e406ad2cd005cfc0867070d16230a9cd0ae36671a16cf
[INFO] running `Command { std: "docker" "start" "-a" "a61be640e9285ce3dc5e406ad2cd005cfc0867070d16230a9cd0ae36671a16cf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a61be640e9285ce3dc5e406ad2cd005cfc0867070d16230a9cd0ae36671a16cf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a61be640e9285ce3dc5e406ad2cd005cfc0867070d16230a9cd0ae36671a16cf", kill_on_drop: false }`
[INFO] [stdout] a61be640e9285ce3dc5e406ad2cd005cfc0867070d16230a9cd0ae36671a16cf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d70df8641b14ebbd19138a714115c286a1a696d2288d55ee7302486b2604b48e
[INFO] running `Command { std: "docker" "start" "-a" "d70df8641b14ebbd19138a714115c286a1a696d2288d55ee7302486b2604b48e", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking rmux v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.28s
[INFO] running `Command { std: "docker" "inspect" "d70df8641b14ebbd19138a714115c286a1a696d2288d55ee7302486b2604b48e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d70df8641b14ebbd19138a714115c286a1a696d2288d55ee7302486b2604b48e", kill_on_drop: false }`
[INFO] [stdout] d70df8641b14ebbd19138a714115c286a1a696d2288d55ee7302486b2604b48e