[INFO] fetching crate at51 0.4.1...
[INFO] checking at51-0.4.1 against try#d990716b6a1fdde1300748828a9c9e79dfd0b898 for pr-74846
[INFO] extracting crate at51 0.4.1 into /workspace/builds/worker-10/source
[INFO] validating manifest of crates.io crate at51 0.4.1 on toolchain d990716b6a1fdde1300748828a9c9e79dfd0b898
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d990716b6a1fdde1300748828a9c9e79dfd0b898" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate at51 0.4.1
[INFO] finished tweaking crates.io crate at51 0.4.1
[INFO] tweaked toml for crates.io crate at51 0.4.1 written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d990716b6a1fdde1300748828a9c9e79dfd0b898" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d990716b6a1fdde1300748828a9c9e79dfd0b898" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded ar v0.8.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+d990716b6a1fdde1300748828a9c9e79dfd0b898" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ea4386757aca95aecb560f9ad701e4ce97cd8b542c20004962c8c13fe9e9a4af
[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" "ea4386757aca95aecb560f9ad701e4ce97cd8b542c20004962c8c13fe9e9a4af", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ea4386757aca95aecb560f9ad701e4ce97cd8b542c20004962c8c13fe9e9a4af", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ea4386757aca95aecb560f9ad701e4ce97cd8b542c20004962c8c13fe9e9a4af", kill_on_drop: false }`
[INFO] [stdout] ea4386757aca95aecb560f9ad701e4ce97cd8b542c20004962c8c13fe9e9a4af
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+d990716b6a1fdde1300748828a9c9e79dfd0b898" "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] f3ac0b1d9d3e1995fc4a13864c7d7c22a45dd407c94e4f88973637657158bb25
[INFO] running `Command { std: "docker" "start" "-a" "f3ac0b1d9d3e1995fc4a13864c7d7c22a45dd407c94e4f88973637657158bb25", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]     Checking strength_reduce v0.2.3
[INFO] [stderr]     Checking ar v0.8.0
[INFO] [stderr]    Compiling nom v5.1.2
[INFO] [stderr]     Checking dirs-sys v0.3.5
[INFO] [stderr]     Checking lexical-core v0.7.4
[INFO] [stderr]     Checking serde v1.0.115
[INFO] [stderr]     Checking dirs v2.0.2
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling num-integer v0.1.43
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]     Checking rustfft v3.0.1
[INFO] [stderr]     Checking serde_json v1.0.57
[INFO] [stderr]     Checking at51 v0.4.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 24.41s
[INFO] running `Command { std: "docker" "inspect" "f3ac0b1d9d3e1995fc4a13864c7d7c22a45dd407c94e4f88973637657158bb25", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f3ac0b1d9d3e1995fc4a13864c7d7c22a45dd407c94e4f88973637657158bb25", kill_on_drop: false }`
[INFO] [stdout] f3ac0b1d9d3e1995fc4a13864c7d7c22a45dd407c94e4f88973637657158bb25