[INFO] fetching crate post 0.0.1-alpha.1...
[INFO] checking post-0.0.1-alpha.1 against beta for pr-78714
[INFO] extracting crate post 0.0.1-alpha.1 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate post 0.0.1-alpha.1 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 post 0.0.1-alpha.1
[INFO] finished tweaking crates.io crate post 0.0.1-alpha.1
[INFO] tweaked toml for crates.io crate post 0.0.1-alpha.1 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate crates.io crate post 0.0.1-alpha.1 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] [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-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] 1229403a6f67296b8d1d9f1a937200cac3326444bbbdff8dc7d992ce9f80100d
[INFO] running `Command { std: "docker" "start" "-a" "1229403a6f67296b8d1d9f1a937200cac3326444bbbdff8dc7d992ce9f80100d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1229403a6f67296b8d1d9f1a937200cac3326444bbbdff8dc7d992ce9f80100d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1229403a6f67296b8d1d9f1a937200cac3326444bbbdff8dc7d992ce9f80100d", kill_on_drop: false }`
[INFO] [stdout] 1229403a6f67296b8d1d9f1a937200cac3326444bbbdff8dc7d992ce9f80100d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 4dd8841af21ecc13b95b61c8cce8b36387dfc9cdfef3421e52b05912d5d626d9
[INFO] running `Command { std: "docker" "start" "-a" "4dd8841af21ecc13b95b61c8cce8b36387dfc9cdfef3421e52b05912d5d626d9", kill_on_drop: false }`
[INFO] [stderr]     Checking futures-sink v0.3.7
[INFO] [stderr]     Checking futures-io v0.3.7
[INFO] [stderr]     Checking regex-syntax v0.6.20
[INFO] [stderr]    Compiling anyhow v1.0.33
[INFO] [stderr]     Checking signal-hook-registry v1.2.1
[INFO] [stderr]     Checking socket2 v0.3.15
[INFO] [stderr]    Compiling prost-build v0.6.1
[INFO] [stderr]    Compiling tokio-macros v0.2.5
[INFO] [stderr]     Checking tracing v0.1.21
[INFO] [stderr]    Compiling rand_pcg v0.2.1
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]     Checking async-stream v0.2.1
[INFO] [stderr]     Checking rmp-serde v0.13.7
[INFO] [stderr]     Checking tower-discover v0.3.0
[INFO] [stderr]     Checking tower-load-shed v0.3.0
[INFO] [stderr]     Checking futures-channel v0.3.7
[INFO] [stderr]     Checking tracing-futures v0.2.4
[INFO] [stderr]    Compiling prost-derive v0.6.1
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]     Checking futures-util v0.3.7
[INFO] [stderr]     Checking tokio v0.2.22
[INFO] [stderr]    Compiling tempfile v3.1.0
[INFO] [stderr]     Checking regex v1.4.1
[INFO] [stderr]    Compiling prost v0.6.1
[INFO] [stderr]    Compiling prost-types v0.6.1
[INFO] [stderr]     Checking tower-load v0.3.0
[INFO] [stderr]     Checking tokio-util v0.3.1
[INFO] [stderr]     Checking tower-retry v0.3.0
[INFO] [stderr]     Checking tower-timeout v0.3.0
[INFO] [stderr]     Checking tower-make v0.3.0
[INFO] [stderr]     Checking tower-buffer v0.3.0
[INFO] [stderr]     Checking tower-util v0.3.1
[INFO] [stderr]     Checking tower-ready-cache v0.3.1
[INFO] [stderr]     Checking futures-executor v0.3.7
[INFO] [stderr]     Checking env_logger v0.7.1
[INFO] [stderr]     Checking futures v0.3.7
[INFO] [stderr]     Checking tower-limit v0.3.1
[INFO] [stderr]     Checking tower-balance v0.3.0
[INFO] [stderr]     Checking h2 v0.2.7
[INFO] [stderr]     Checking tower v0.3.1
[INFO] [stderr]    Compiling tonic-build v0.3.1
[INFO] [stderr]    Compiling post v0.0.1-alpha.1 (/opt/rustwide/workdir)
[INFO] [stderr] error: failed to run custom build command for `post v0.0.1-alpha.1 (/opt/rustwide/workdir)`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/build/post-643d707d6232052f/build-script-build` (exit code: 1)
[INFO] [stderr]   --- stderr
[INFO] [stderr]   error: 'rustfmt' is not installed for the toolchain 'beta-x86_64-unknown-linux-gnu'
[INFO] [stderr]   To install, run `rustup component add rustfmt --toolchain beta-x86_64-unknown-linux-gnu`
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "4dd8841af21ecc13b95b61c8cce8b36387dfc9cdfef3421e52b05912d5d626d9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4dd8841af21ecc13b95b61c8cce8b36387dfc9cdfef3421e52b05912d5d626d9", kill_on_drop: false }`
[INFO] [stdout] 4dd8841af21ecc13b95b61c8cce8b36387dfc9cdfef3421e52b05912d5d626d9