[INFO] fetching crate cc 1.0.76...
[INFO] building cc-1.0.76 against try#8dae881ac166f8debe04e17604ebbe2ab47083fd+target=i686-unknown-linux-musl for musl_upgrade_test
[INFO] extracting crate cc 1.0.76 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate cc 1.0.76 on toolchain 8dae881ac166f8debe04e17604ebbe2ab47083fd
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8dae881ac166f8debe04e17604ebbe2ab47083fd" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate cc 1.0.76
[INFO] finished tweaking crates.io crate cc 1.0.76
[INFO] tweaked toml for crates.io crate cc 1.0.76 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate cc 1.0.76 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8dae881ac166f8debe04e17604ebbe2ab47083fd" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded jobserver v0.1.25
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:bb5b0feb4f87116a4ea905b7ff5bf5b85913db05e9f0fbc1abdd3168928d9075" "/opt/rustwide/cargo-home/bin/cargo" "+8dae881ac166f8debe04e17604ebbe2ab47083fd" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4f07115890e08542f01c13bce4bb7485ee6e0ff1cb2c9ac5b75e307ce6125a0b
[INFO] running `Command { std: "docker" "start" "-a" "4f07115890e08542f01c13bce4bb7485ee6e0ff1cb2c9ac5b75e307ce6125a0b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4f07115890e08542f01c13bce4bb7485ee6e0ff1cb2c9ac5b75e307ce6125a0b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4f07115890e08542f01c13bce4bb7485ee6e0ff1cb2c9ac5b75e307ce6125a0b", kill_on_drop: false }`
[INFO] [stdout] 4f07115890e08542f01c13bce4bb7485ee6e0ff1cb2c9ac5b75e307ce6125a0b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:bb5b0feb4f87116a4ea905b7ff5bf5b85913db05e9f0fbc1abdd3168928d9075" "/opt/rustwide/cargo-home/bin/cargo" "+8dae881ac166f8debe04e17604ebbe2ab47083fd" "build" "--frozen" "--message-format=json" "--target" "i686-unknown-linux-musl", kill_on_drop: false }`
[INFO] [stdout] 6ac68ec9741152ae490d085718faebbe25bf33a0961949fa71cc56bc67248125
[INFO] running `Command { std: "docker" "start" "-a" "6ac68ec9741152ae490d085718faebbe25bf33a0961949fa71cc56bc67248125", kill_on_drop: false }`
[INFO] [stderr]    Compiling cc v1.0.76 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.02s
[INFO] running `Command { std: "docker" "inspect" "6ac68ec9741152ae490d085718faebbe25bf33a0961949fa71cc56bc67248125", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6ac68ec9741152ae490d085718faebbe25bf33a0961949fa71cc56bc67248125", kill_on_drop: false }`
[INFO] [stdout] 6ac68ec9741152ae490d085718faebbe25bf33a0961949fa71cc56bc67248125
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:bb5b0feb4f87116a4ea905b7ff5bf5b85913db05e9f0fbc1abdd3168928d9075" "/opt/rustwide/cargo-home/bin/cargo" "+8dae881ac166f8debe04e17604ebbe2ab47083fd" "test" "--frozen" "--no-run" "--message-format=json" "--target" "i686-unknown-linux-musl", kill_on_drop: false }`
[INFO] [stdout] 84f2410f6b9e765d598f6da1675f9d0f6ec6ebc5c1a072299aa14f5aaf8b0c54
[INFO] running `Command { std: "docker" "start" "-a" "84f2410f6b9e765d598f6da1675f9d0f6ec6ebc5c1a072299aa14f5aaf8b0c54", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.137
[INFO] [stderr]    Compiling remove_dir_all v0.5.3
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling fastrand v1.8.0
[INFO] [stderr]    Compiling tempfile v3.3.0
[INFO] [stderr]    Compiling cc v1.0.76 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 4.40s
[INFO] running `Command { std: "docker" "inspect" "84f2410f6b9e765d598f6da1675f9d0f6ec6ebc5c1a072299aa14f5aaf8b0c54", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "84f2410f6b9e765d598f6da1675f9d0f6ec6ebc5c1a072299aa14f5aaf8b0c54", kill_on_drop: false }`
[INFO] [stdout] 84f2410f6b9e765d598f6da1675f9d0f6ec6ebc5c1a072299aa14f5aaf8b0c54