[INFO] fetching crate mex-sys 0.1.0...
[INFO] testing mex-sys-0.1.0 against beta-2021-09-08 for beta-1.56-1
[INFO] extracting crate mex-sys 0.1.0 into /workspace/builds/worker-100/source
[INFO] validating manifest of crates.io crate mex-sys 0.1.0 on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-100/source/.cargo/config
[INFO] started tweaking crates.io crate mex-sys 0.1.0
[INFO] finished tweaking crates.io crate mex-sys 0.1.0
[INFO] tweaked toml for crates.io crate mex-sys 0.1.0 written to /workspace/builds/worker-100/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "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-100/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-100/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" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 40fd30c33e63759fa31bb44952d82d4d7b35e2eb9a5dbe96c9e3ad4d628af048
[INFO] running `Command { std: "docker" "start" "-a" "40fd30c33e63759fa31bb44952d82d4d7b35e2eb9a5dbe96c9e3ad4d628af048", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "40fd30c33e63759fa31bb44952d82d4d7b35e2eb9a5dbe96c9e3ad4d628af048", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "40fd30c33e63759fa31bb44952d82d4d7b35e2eb9a5dbe96c9e3ad4d628af048", kill_on_drop: false }`
[INFO] [stdout] 40fd30c33e63759fa31bb44952d82d4d7b35e2eb9a5dbe96c9e3ad4d628af048
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-100/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-100/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=warn" "-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" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8496739142c693b3d2e6c7e3da8b811465c0850faea6f031ccccc0bcd4fb3b1a
[INFO] running `Command { std: "docker" "start" "-a" "8496739142c693b3d2e6c7e3da8b811465c0850faea6f031ccccc0bcd4fb3b1a", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling mex-sys v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.03s
[INFO] running `Command { std: "docker" "inspect" "8496739142c693b3d2e6c7e3da8b811465c0850faea6f031ccccc0bcd4fb3b1a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8496739142c693b3d2e6c7e3da8b811465c0850faea6f031ccccc0bcd4fb3b1a", kill_on_drop: false }`
[INFO] [stdout] 8496739142c693b3d2e6c7e3da8b811465c0850faea6f031ccccc0bcd4fb3b1a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-100/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-100/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=warn" "-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" "+beta-2021-09-08" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4ab22b53a9e0e9f734f64ad7d07c8cf2c5cb37f0017788fd980426f6d1c6e557
[INFO] running `Command { std: "docker" "start" "-a" "4ab22b53a9e0e9f734f64ad7d07c8cf2c5cb37f0017788fd980426f6d1c6e557", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling mex-sys v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.89s
[INFO] running `Command { std: "docker" "inspect" "4ab22b53a9e0e9f734f64ad7d07c8cf2c5cb37f0017788fd980426f6d1c6e557", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4ab22b53a9e0e9f734f64ad7d07c8cf2c5cb37f0017788fd980426f6d1c6e557", kill_on_drop: false }`
[INFO] [stdout] 4ab22b53a9e0e9f734f64ad7d07c8cf2c5cb37f0017788fd980426f6d1c6e557
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-100/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-100/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=warn" "-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" "+beta-2021-09-08" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 3b31bec1d4e354ae7140f508b93f76b2bb1763eff806525049b2242bafff138f
[INFO] running `Command { std: "docker" "start" "-a" "3b31bec1d4e354ae7140f508b93f76b2bb1763eff806525049b2242bafff138f", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/mex_sys-b1a7261e01e70ed0)
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests mex-sys
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "3b31bec1d4e354ae7140f508b93f76b2bb1763eff806525049b2242bafff138f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3b31bec1d4e354ae7140f508b93f76b2bb1763eff806525049b2242bafff138f", kill_on_drop: false }`
[INFO] [stdout] 3b31bec1d4e354ae7140f508b93f76b2bb1763eff806525049b2242bafff138f