[INFO] fetching crate syphon 0.1.0...
[INFO] checking syphon-0.1.0 against 1.55.0 for beta-1.56-3
[INFO] extracting crate syphon 0.1.0 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate syphon 0.1.0 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate syphon 0.1.0
[INFO] finished tweaking crates.io crate syphon 0.1.0
[INFO] tweaked toml for crates.io crate syphon 0.1.0 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate crates.io crate syphon 0.1.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded tracing v0.1.13
[INFO] [stderr]   Downloaded thread_local v0.3.4
[INFO] [stderr]   Downloaded serde_derive v1.0.105
[INFO] [stderr]   Downloaded serde v1.0.105
[INFO] [stderr]   Downloaded stderrlog v0.4.3
[INFO] [stderr]   Downloaded winapi-util v0.1.4
[INFO] [stderr]   Downloaded h2 v0.2.4
[INFO] [stderr]   Downloaded async-trait v0.1.27
[INFO] [stderr]   Downloaded tracing-attributes v0.1.7
[INFO] [stderr]   Downloaded petgraph v0.5.0
[INFO] [stderr]   Downloaded regex v1.3.6
[INFO] [stderr]   Downloaded tracing-futures v0.2.3
[INFO] [stderr]   Downloaded hyper v0.13.4
[INFO] [stderr]   Downloaded libc v0.2.68
[INFO] [stderr]   Downloaded arc-swap v0.4.5
[INFO] [stderr]   Downloaded named_tuple v0.1.3
[INFO] [stderr]   Downloaded tonic v0.2.0
[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" "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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7347af66644a635b0231161713b4cf25f17a52e266998451313326124a7a91a1
[INFO] running `Command { std: "docker" "start" "-a" "7347af66644a635b0231161713b4cf25f17a52e266998451313326124a7a91a1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7347af66644a635b0231161713b4cf25f17a52e266998451313326124a7a91a1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7347af66644a635b0231161713b4cf25f17a52e266998451313326124a7a91a1", kill_on_drop: false }`
[INFO] [stdout] 7347af66644a635b0231161713b4cf25f17a52e266998451313326124a7a91a1
[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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0a94b18b4c0942f26ff8f7269614758174d8db8a8b96523610c879ca6f7d83df
[INFO] running `Command { std: "docker" "start" "-a" "0a94b18b4c0942f26ff8f7269614758174d8db8a8b96523610c879ca6f7d83df", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling proc-macro2 v1.0.9
[INFO] [stderr]    Compiling syn v1.0.17
[INFO] [stderr]     Checking arc-swap v0.4.5
[INFO] [stderr]    Compiling proc-macro-nested v0.1.4
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling anyhow v1.0.28
[INFO] [stderr]    Compiling proc-macro-hack v0.5.15
[INFO] [stderr]    Compiling either v1.5.3
[INFO] [stderr]     Checking tower-layer v0.3.0
[INFO] [stderr]    Compiling ppv-lite86 v0.2.6
[INFO] [stderr]    Compiling bytes v0.5.4
[INFO] [stderr]    Compiling fixedbitset v0.2.0
[INFO] [stderr]    Compiling unicode-segmentation v1.6.0
[INFO] [stderr]    Compiling remove_dir_all v0.5.2
[INFO] [stderr]    Compiling multimap v0.8.1
[INFO] [stderr]    Compiling serde v1.0.105
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]    Compiling snap v1.0.0
[INFO] [stderr]     Checking lazy_static v0.2.11
[INFO] [stderr]     Checking futures-channel v0.3.4
[INFO] [stderr]     Checking tracing-core v0.1.10
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]    Compiling num-integer v0.1.42
[INFO] [stderr]    Compiling which v3.1.1
[INFO] [stderr]     Checking atty v0.2.11
[INFO] [stderr]    Compiling indexmap v1.3.2
[INFO] [stderr]     Checking mio-uds v0.6.7
[INFO] [stderr]     Checking rand_pcg v0.2.1
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking unreachable v1.0.0
[INFO] [stderr]     Checking signal-hook-registry v1.2.0
[INFO] [stderr]    Compiling itertools v0.8.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]     Checking thread_local v0.3.4
[INFO] [stderr]    Compiling prost-build v0.6.1
[INFO] [stderr]    Compiling petgraph v0.5.0
[INFO] [stderr]    Compiling heck v0.3.1
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling quote v1.0.3
[INFO] [stderr]     Checking chrono v0.4.11
[INFO] [stderr]    Compiling tempfile v3.1.0
[INFO] [stderr]     Checking stderrlog v0.4.3
[INFO] [stderr]    Compiling named_tuple v0.1.3
[INFO] [stderr]    Compiling pin-project-internal v0.4.8
[INFO] [stderr]    Compiling tokio-macros v0.2.5
[INFO] [stderr]    Compiling futures-macro v0.3.4
[INFO] [stderr]    Compiling prost-derive v0.6.1
[INFO] [stderr]    Compiling tracing-attributes v0.1.7
[INFO] [stderr]    Compiling async-stream-impl v0.2.1
[INFO] [stderr]    Compiling serde_derive v1.0.105
[INFO] [stderr]    Compiling async-trait v0.1.27
[INFO] [stderr]     Checking tokio v0.2.13
[INFO] [stderr]     Checking futures-util v0.3.4
[INFO] [stderr]     Checking async-stream v0.2.1
[INFO] [stderr]     Checking tracing v0.1.13
[INFO] [stderr]     Checking pin-project v0.4.8
[INFO] [stderr]     Checking tower-discover v0.3.0
[INFO] [stderr]     Checking tower-load-shed v0.3.0
[INFO] [stderr]     Checking tracing-futures v0.2.3
[INFO] [stderr]    Compiling prost v0.6.1
[INFO] [stderr]    Compiling prost-types v0.6.1
[INFO] [stderr]     Checking tower-util v0.3.1
[INFO] [stderr]     Checking futures-executor v0.3.4
[INFO] [stderr]     Checking futures v0.3.4
[INFO] [stderr]     Checking tower-load v0.3.0
[INFO] [stderr]     Checking tokio-util v0.3.1
[INFO] [stderr]     Checking tower-buffer v0.3.0
[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-ready-cache v0.3.1
[INFO] [stderr]     Checking h2 v0.2.4
[INFO] [stderr]     Checking tower-limit v0.3.1
[INFO] [stderr]     Checking tower-balance v0.3.0
[INFO] [stderr]     Checking tower v0.3.1
[INFO] [stderr]    Compiling tonic-build v0.2.0
[INFO] [stderr]     Checking hyper v0.13.4
[INFO] [stderr]    Compiling syphon v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking toml v0.5.6
[INFO] [stderr]     Checking tonic v0.2.0
[INFO] [stderr] error: failed to run custom build command for `syphon v0.1.0 (/opt/rustwide/workdir)`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/build/syphon-877a88e4b54bf172/build-script-build` (exit status: 1)
[INFO] [stderr]   --- stderr
[INFO] [stderr]   error: 'rustfmt' is not installed for the toolchain '1.55.0-x86_64-unknown-linux-gnu'
[INFO] [stderr]   To install, run `rustup component add rustfmt --toolchain 1.55.0-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" "0a94b18b4c0942f26ff8f7269614758174d8db8a8b96523610c879ca6f7d83df", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0a94b18b4c0942f26ff8f7269614758174d8db8a8b96523610c879ca6f7d83df", kill_on_drop: false }`
[INFO] [stdout] 0a94b18b4c0942f26ff8f7269614758174d8db8a8b96523610c879ca6f7d83df
