[INFO] fetching crate b2m 0.22.0...
[INFO] checking b2m-0.22.0 against beta for pr-78714
[INFO] extracting crate b2m 0.22.0 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate b2m 0.22.0 on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate b2m 0.22.0
[INFO] finished tweaking crates.io crate b2m 0.22.0
[INFO] tweaked toml for crates.io crate b2m 0.22.0 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate crates.io crate b2m 0.22.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", 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] cebe9069e2cfc0c2c6e55121813a445c7f701413aacfa3373315b6f94b488811
[INFO] running `Command { std: "docker" "start" "-a" "cebe9069e2cfc0c2c6e55121813a445c7f701413aacfa3373315b6f94b488811", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cebe9069e2cfc0c2c6e55121813a445c7f701413aacfa3373315b6f94b488811", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cebe9069e2cfc0c2c6e55121813a445c7f701413aacfa3373315b6f94b488811", kill_on_drop: false }`
[INFO] [stdout] cebe9069e2cfc0c2c6e55121813a445c7f701413aacfa3373315b6f94b488811
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 72c3e47528d0d7d5a9ff4c4a7851d16f5cedf8076c2ca07feef4a235a9e286b8
[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" "72c3e47528d0d7d5a9ff4c4a7851d16f5cedf8076c2ca07feef4a235a9e286b8", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.79
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling serde v1.0.117
[INFO] [stderr]     Checking unicode-width v0.1.8
[INFO] [stderr]    Compiling anyhow v1.0.33
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking regex-syntax v0.6.20
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking vec_map v0.8.2
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking aho-corasick v0.7.14
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking regex v1.4.1
[INFO] [stderr]     Checking serde_json v1.0.59
[INFO] [stderr]     Checking b2m v0.22.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 18.53s
[INFO] running `Command { std: "docker" "inspect" "72c3e47528d0d7d5a9ff4c4a7851d16f5cedf8076c2ca07feef4a235a9e286b8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "72c3e47528d0d7d5a9ff4c4a7851d16f5cedf8076c2ca07feef4a235a9e286b8", kill_on_drop: false }`
[INFO] [stdout] 72c3e47528d0d7d5a9ff4c4a7851d16f5cedf8076c2ca07feef4a235a9e286b8