[INFO] fetching crate seabird 0.1.0-alpha.3...
[INFO] documenting seabird-0.1.0-alpha.3 against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] extracting crate seabird 0.1.0-alpha.3 into /workspace/builds/worker-10/source
[INFO] validating manifest of crates.io crate seabird 0.1.0-alpha.3 on toolchain beta-2020-08-29
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate seabird 0.1.0-alpha.3
[INFO] finished tweaking crates.io crate seabird 0.1.0-alpha.3
[INFO] tweaked toml for crates.io crate seabird 0.1.0-alpha.3 written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded tonic-build v0.3.1
[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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-08-29" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a2b4c1e9019b9939ad4026961f51ebf9da61c67f57e1d1e67361f8725ff79034
[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" "a2b4c1e9019b9939ad4026961f51ebf9da61c67f57e1d1e67361f8725ff79034", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a2b4c1e9019b9939ad4026961f51ebf9da61c67f57e1d1e67361f8725ff79034", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a2b4c1e9019b9939ad4026961f51ebf9da61c67f57e1d1e67361f8725ff79034", kill_on_drop: false }`
[INFO] [stdout] a2b4c1e9019b9939ad4026961f51ebf9da61c67f57e1d1e67361f8725ff79034
[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" "RUSTDOCFLAGS=--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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-08-29" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 23a5bc060d57a9e282f83a9a9765f848f7918e8d2c703073fc9b0a4588601ae1
[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" "23a5bc060d57a9e282f83a9a9765f848f7918e8d2c703073fc9b0a4588601ae1", kill_on_drop: false }`
[INFO] [stderr]     Checking tower-make v0.3.0
[INFO] [stderr]    Compiling async-stream-impl v0.2.1
[INFO] [stderr]     Checking futures-util v0.3.5
[INFO] [stderr]     Checking tower-discover v0.3.0
[INFO] [stderr]    Compiling prost-build v0.6.1
[INFO] [stderr]     Checking tower-timeout v0.3.0
[INFO] [stderr]     Checking tower-load-shed v0.3.0
[INFO] [stderr]     Checking tower-retry v0.3.0
[INFO] [stderr]     Checking tracing v0.1.19
[INFO] [stderr]     Checking rustls v0.18.1
[INFO] [stderr]     Checking tower-load v0.3.0
[INFO] [stderr]     Checking tower-buffer v0.3.0
[INFO] [stderr]     Checking tracing-futures v0.2.4
[INFO] [stderr]     Checking tower-limit v0.3.1
[INFO] [stderr]    Compiling tonic-build v0.3.1
[INFO] [stderr]     Checking async-stream v0.2.1
[INFO] [stderr]     Checking tokio-rustls v0.14.1
[INFO] [stderr]     Checking rustls-native-certs v0.4.0
[INFO] [stderr]    Compiling seabird v0.1.0-alpha.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking h2 v0.2.6
[INFO] [stderr]     Checking tower-util v0.3.1
[INFO] [stderr]     Checking tower-ready-cache v0.3.1
[INFO] [stderr]     Checking tower-balance v0.3.0
[INFO] [stderr]     Checking tower v0.3.1
[INFO] [stderr] error: failed to run custom build command for `seabird v0.1.0-alpha.3 (/opt/rustwide/workdir)`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/build/seabird-c91619f31cdc10af/build-script-build` (exit code: 1)
[INFO] [stderr]   --- stderr
[INFO] [stderr]   error: 'rustfmt' is not installed for the toolchain 'beta-2020-08-29-x86_64-unknown-linux-gnu'
[INFO] [stderr]   To install, run `rustup component add rustfmt --toolchain beta-2020-08-29-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" "23a5bc060d57a9e282f83a9a9765f848f7918e8d2c703073fc9b0a4588601ae1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "23a5bc060d57a9e282f83a9a9765f848f7918e8d2c703073fc9b0a4588601ae1", kill_on_drop: false }`
[INFO] [stdout] 23a5bc060d57a9e282f83a9a9765f848f7918e8d2c703073fc9b0a4588601ae1