[INFO] fetching crate proximity-db 0.1.1...
[INFO] testing proximity-db-0.1.1 against 1.55.0 for beta-1.56-1
[INFO] extracting crate proximity-db 0.1.1 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate proximity-db 0.1.1 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 proximity-db 0.1.1
[INFO] finished tweaking crates.io crate proximity-db 0.1.1
[INFO] tweaked toml for crates.io crate proximity-db 0.1.1 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate crates.io crate proximity-db 0.1.1 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] 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" "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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] b1900d4b12bdabe75b28f0704b1c745b8ba1d225e4a8f1d69b6d51c507147486
[INFO] running `Command { std: "docker" "start" "-a" "b1900d4b12bdabe75b28f0704b1c745b8ba1d225e4a8f1d69b6d51c507147486", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b1900d4b12bdabe75b28f0704b1c745b8ba1d225e4a8f1d69b6d51c507147486", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b1900d4b12bdabe75b28f0704b1c745b8ba1d225e4a8f1d69b6d51c507147486", kill_on_drop: false }`
[INFO] [stdout] b1900d4b12bdabe75b28f0704b1c745b8ba1d225e4a8f1d69b6d51c507147486
[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=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" "build" "--frozen" "--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] 98156525f2b068a20c4394690ebf5f0ac64999b04cd3b870c8df1f49b3ad28f3
[INFO] running `Command { std: "docker" "start" "-a" "98156525f2b068a20c4394690ebf5f0ac64999b04cd3b870c8df1f49b3ad28f3", kill_on_drop: false }`
[INFO] [stderr]    Compiling pin-project-internal v0.4.21
[INFO] [stderr]    Compiling multimap v0.8.1
[INFO] [stderr]    Compiling wide v0.4.6
[INFO] [stderr]    Compiling human_format v1.0.3
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling tracing-core v0.1.10
[INFO] [stderr]    Compiling generic-array v0.14.2
[INFO] [stderr]    Compiling http-body v0.3.1
[INFO] [stderr]    Compiling which v3.1.1
[INFO] [stderr]    Compiling mio v0.6.22
[INFO] [stderr]    Compiling tokio-macros v0.2.5
[INFO] [stderr]    Compiling rand_pcg v0.2.1
[INFO] [stderr]    Compiling prost-derive v0.6.1
[INFO] [stderr]    Compiling tracing-attributes v0.1.8
[INFO] [stderr]    Compiling petgraph v0.5.1
[INFO] [stderr]    Compiling paste-impl v0.1.16
[INFO] [stderr]    Compiling syn-mid v0.5.0
[INFO] [stderr]    Compiling async-stream-impl v0.2.1
[INFO] [stderr]    Compiling thiserror-impl v1.0.19
[INFO] [stderr]    Compiling derivative v2.1.1
[INFO] [stderr]    Compiling clap v2.33.1
[INFO] [stderr]    Compiling enum-iterator-derive v0.6.0
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling prost-build v0.6.1
[INFO] [stderr]    Compiling toml v0.5.6
[INFO] [stderr]    Compiling rayon-core v1.7.0
[INFO] [stderr]    Compiling mio-uds v0.6.8
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.2
[INFO] [stderr]    Compiling tempfile v3.1.0
[INFO] [stderr]    Compiling rand_distr v0.2.2
[INFO] [stderr]    Compiling rayon v1.3.0
[INFO] [stderr]    Compiling paste v0.1.16
[INFO] [stderr]    Compiling proc-macro-crate v0.1.4
[INFO] [stderr]    Compiling enum-iterator v0.6.0
[INFO] [stderr]    Compiling tokio v0.2.21
[INFO] [stderr]    Compiling async-stream v0.2.1
[INFO] [stderr]    Compiling thiserror v1.0.19
[INFO] [stderr]    Compiling num-integer v0.1.43
[INFO] [stderr]    Compiling approx v0.3.2
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]    Compiling streaming-stats v0.2.3
[INFO] [stderr]    Compiling num_enum_derive v0.5.0
[INFO] [stderr]    Compiling proc-macro-error v1.0.2
[INFO] [stderr]    Compiling num-rational v0.2.4
[INFO] [stderr]    Compiling simba v0.1.5
[INFO] [stderr]    Compiling tracing v0.1.15
[INFO] [stderr]    Compiling structopt-derive v0.4.7
[INFO] [stderr]    Compiling prost v0.6.1
[INFO] [stderr]    Compiling nalgebra v0.21.1
[INFO] [stderr]    Compiling prost-types v0.6.1
[INFO] [stderr]    Compiling num_enum v0.5.0
[INFO] [stderr]    Compiling pin-project v0.4.21
[INFO] [stderr]    Compiling futures-util v0.3.5
[INFO] [stderr]    Compiling tower-discover v0.3.0
[INFO] [stderr]    Compiling tower-load-shed v0.3.0
[INFO] [stderr]    Compiling tracing-futures v0.2.4
[INFO] [stderr]    Compiling tokio-util v0.3.1
[INFO] [stderr]    Compiling tower-make v0.3.0
[INFO] [stderr]    Compiling tower-buffer v0.3.0
[INFO] [stderr]    Compiling tower-retry v0.3.0
[INFO] [stderr]    Compiling tower-timeout v0.3.0
[INFO] [stderr]    Compiling tower-load v0.3.0
[INFO] [stderr]    Compiling structopt v0.3.14
[INFO] [stderr]    Compiling tower-limit v0.3.1
[INFO] [stderr]    Compiling tonic-build v0.2.0
[INFO] [stderr]    Compiling proximity-grpc v0.1.1
[INFO] [stderr]    Compiling tower-util v0.3.1
[INFO] [stderr]    Compiling tower-ready-cache v0.3.1
[INFO] [stderr]    Compiling h2 v0.2.5
[INFO] [stderr]    Compiling futures-executor v0.3.5
[INFO] [stderr]    Compiling futures v0.3.5
[INFO] [stderr]    Compiling tower-balance v0.3.0
[INFO] [stderr]    Compiling tower v0.3.1
[INFO] [stderr] error: failed to run custom build command for `proximity-grpc v0.1.1`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/build/proximity-grpc-d00a659b50fb695a/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" "98156525f2b068a20c4394690ebf5f0ac64999b04cd3b870c8df1f49b3ad28f3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "98156525f2b068a20c4394690ebf5f0ac64999b04cd3b870c8df1f49b3ad28f3", kill_on_drop: false }`
[INFO] [stdout] 98156525f2b068a20c4394690ebf5f0ac64999b04cd3b870c8df1f49b3ad28f3