[INFO] cloning repository https://github.com/mcne65/BlockyMusic
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mcne65/BlockyMusic" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmcne65%2FBlockyMusic", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmcne65%2FBlockyMusic'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 16da5c3461296ac2dd81f3f1a21b5f32353fce6a
[INFO] testing mcne65/BlockyMusic against master#432e145bd5a974c5b6f4dd9b352891bd7502b69d for pr-87041
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmcne65%2FBlockyMusic" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mcne65/BlockyMusic on toolchain 432e145bd5a974c5b6f4dd9b352891bd7502b69d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/mcne65/BlockyMusic
[INFO] finished tweaking git repo https://github.com/mcne65/BlockyMusic
[INFO] tweaked toml for git repo https://github.com/mcne65/BlockyMusic written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/mcne65/BlockyMusic already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8dccaa3a54114e61b2c0307c04eaa2f34c5353322dc21dcde71ece88652224fa
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "8dccaa3a54114e61b2c0307c04eaa2f34c5353322dc21dcde71ece88652224fa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8dccaa3a54114e61b2c0307c04eaa2f34c5353322dc21dcde71ece88652224fa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8dccaa3a54114e61b2c0307c04eaa2f34c5353322dc21dcde71ece88652224fa", kill_on_drop: false }`
[INFO] [stdout] 8dccaa3a54114e61b2c0307c04eaa2f34c5353322dc21dcde71ece88652224fa
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 231a8ef1791674e6e494c873c330cca084e3ad54423f49a1ef054e7171622132
[INFO] running `Command { std: "docker" "start" "-a" "231a8ef1791674e6e494c873c330cca084e3ad54423f49a1ef054e7171622132", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.26
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[INFO] [stderr]    Compiling proc-macro-nested v0.1.7
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[INFO] [stderr]    Compiling tracing-log v0.1.2
[INFO] [stderr]    Compiling tokio-util v0.3.1
[INFO] [stderr]    Compiling encoding v0.2.33
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling parking_lot_core v0.8.3
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling mio v0.7.11
[INFO] [stderr]    Compiling signal-hook-registry v1.3.0
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[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling parking_lot_core v0.7.2
[INFO] [stderr]    Compiling filetime v0.2.14
[INFO] [stderr]    Compiling xattr v0.2.2
[INFO] [stderr]    Compiling semver-parser v0.10.2
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[INFO] [stderr]    Compiling bitmaps v2.1.0
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[INFO] [stderr]    Compiling idna v0.2.3
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[INFO] [stderr]    Compiling quanta v0.7.2
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.4
[INFO] [stderr]    Compiling dashmap v4.0.2
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[INFO] [stderr]    Compiling java-properties v1.3.0
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling const-random-macro v0.1.13
[INFO] [stderr]    Compiling bytes v0.4.12
[INFO] [stderr]    Compiling ordered-float v2.2.0
[INFO] [stderr]    Compiling clap v2.33.3
[INFO] [stderr]    Compiling env_logger v0.7.1
[INFO] [stderr]    Compiling brotli v3.3.0
[INFO] [stderr]    Compiling prost-build v0.7.0
[INFO] [stderr]    Compiling tar v0.4.33
[INFO] [stderr]    Compiling native-tls v0.2.7
[INFO] [stderr]    Compiling parking_lot v0.10.2
[INFO] [stderr]    Compiling block-buffer v0.9.0
[INFO] [stderr]    Compiling digest v0.9.0
[INFO] [stderr]    Compiling semver v0.11.0
[INFO] [stderr]    Compiling futures-intrusive v0.4.0
[INFO] [stderr]    Compiling rand_chacha v0.3.0
[INFO] [stderr]    Compiling url v2.2.2
[INFO] [stderr]    Compiling rand_xoshiro v0.4.0
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling sha-1 v0.9.5
[INFO] [stderr]    Compiling futures-intrusive v0.3.1
[INFO] [stderr]    Compiling const-random v0.1.13
[INFO] [stderr]    Compiling rustc_version v0.3.3
[INFO] [stderr]    Compiling rand v0.8.3
[INFO] [stderr]    Compiling sized-chunks v0.6.5
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling ahash v0.3.8
[INFO] [stderr]    Compiling headers v0.3.4
[INFO] [stderr]    Compiling field-offset v0.3.3
[INFO] [stderr]    Compiling dashmap v3.11.10
[INFO] [stderr]    Compiling sct v0.6.1
[INFO] [stderr]    Compiling webpki v0.21.4
[INFO] [stderr]    Compiling tempfile v3.2.0
[INFO] [stderr]    Compiling tungstenite v0.12.0
[INFO] [stderr]    Compiling pcg_rand v0.11.1
[INFO] [stderr]    Compiling rustls v0.19.1
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/field-offset-0.3.3/src/lib.rs:3:53
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![cfg_attr(fieldoffset_assert_in_const_fn, feature(const_fn))]
[INFO] [stdout]   |                                                     ^^^^^^^^ feature has been removed
[INFO] [stdout]   |
[INFO] [stdout]   = note: split into finer-grained feature gates
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0557`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `field-offset`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "231a8ef1791674e6e494c873c330cca084e3ad54423f49a1ef054e7171622132", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "231a8ef1791674e6e494c873c330cca084e3ad54423f49a1ef054e7171622132", kill_on_drop: false }`
[INFO] [stdout] 231a8ef1791674e6e494c873c330cca084e3ad54423f49a1ef054e7171622132