[INFO] crate melon 0.15.2 is already in cache
[INFO] checking melon-0.15.2 against master#c724b67e1b474262917a5154d74e7072267593fe for pr-74315
[INFO] extracting crate melon 0.15.2 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate melon 0.15.2 on toolchain c724b67e1b474262917a5154d74e7072267593fe
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c724b67e1b474262917a5154d74e7072267593fe" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate melon 0.15.2
[INFO] finished tweaking crates.io crate melon 0.15.2
[INFO] tweaked toml for crates.io crate melon 0.15.2 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate crates.io crate melon 0.15.2 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c724b67e1b474262917a5154d74e7072267593fe" "fetch" "--locked" "--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-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+c724b67e1b474262917a5154d74e7072267593fe" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b204efbe1c39de4a4cb0f73032f0abbc1f7e02de71b289a35c08a593a61b2a94
[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" "b204efbe1c39de4a4cb0f73032f0abbc1f7e02de71b289a35c08a593a61b2a94", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b204efbe1c39de4a4cb0f73032f0abbc1f7e02de71b289a35c08a593a61b2a94", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b204efbe1c39de4a4cb0f73032f0abbc1f7e02de71b289a35c08a593a61b2a94", kill_on_drop: false }`
[INFO] [stdout] b204efbe1c39de4a4cb0f73032f0abbc1f7e02de71b289a35c08a593a61b2a94
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+c724b67e1b474262917a5154d74e7072267593fe" "check" "--frozen" "--all" "--all-targets" "--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] 9deb6549e120a75f78d6690ba1cd922aeeb4a21a322d52f1191ccbf0e9015745
[INFO] running `Command { std: "docker" "start" "-a" "9deb6549e120a75f78d6690ba1cd922aeeb4a21a322d52f1191ccbf0e9015745", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.68
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling cc v1.0.50
[INFO] [stderr]     Checking unicode-width v0.1.7
[INFO] [stderr]    Compiling crc32fast v1.2.0
[INFO] [stderr]    Compiling failure_derive v0.1.7
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling nix v0.17.0
[INFO] [stderr]    Compiling quote v0.3.15
[INFO] [stderr]     Checking adler32 v1.0.4
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.2
[INFO] [stderr]    Compiling proc-macro-error v1.0.2
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]     Checking log v0.4.8
[INFO] [stderr]    Compiling proc-macro2 v1.0.10
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking miniz_oxide v0.3.6
[INFO] [stderr]    Compiling quote v1.0.3
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]    Compiling syn v1.0.17
[INFO] [stderr]    Compiling backtrace-sys v0.1.35
[INFO] [stderr]     Checking rmp v0.8.9
[INFO] [stderr]    Compiling rand_derive v0.5.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking dirs-sys v0.3.4
[INFO] [stderr]     Checking flate2 v1.0.14
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking colored v1.9.3
[INFO] [stderr]     Checking dirs v2.0.2
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking backtrace v0.3.46
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking tempfile v3.1.0
[INFO] [stderr]     Checking rustyline v6.1.0
[INFO] [stderr]    Compiling syn-mid v0.5.0
[INFO] [stderr]    Compiling synstructure v0.12.3
[INFO] [stderr]    Compiling serde_derive v1.0.106
[INFO] [stderr]     Checking failure v0.1.7
[INFO] [stderr]    Compiling structopt-derive v0.4.6
[INFO] [stderr]     Checking structopt v0.3.13
[INFO] [stderr]     Checking serde v1.0.106
[INFO] [stderr]     Checking semver v0.9.0
[INFO] [stderr]     Checking rmp-serde v0.14.3
[INFO] [stderr]     Checking melon v0.15.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 25s
[INFO] running `Command { std: "docker" "inspect" "9deb6549e120a75f78d6690ba1cd922aeeb4a21a322d52f1191ccbf0e9015745", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9deb6549e120a75f78d6690ba1cd922aeeb4a21a322d52f1191ccbf0e9015745", kill_on_drop: false }`
[INFO] [stdout] 9deb6549e120a75f78d6690ba1cd922aeeb4a21a322d52f1191ccbf0e9015745