[INFO] cloning repository https://github.com/AlecZorab/grpc_rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/AlecZorab/grpc_rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAlecZorab%2Fgrpc_rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAlecZorab%2Fgrpc_rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0666bc32873e427cce52ec4921c718442b180410
[INFO] checking AlecZorab/grpc_rust against try#ddfd70ee3c3748e597b32f416b0d15a4f6e37685 for pr-87050
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAlecZorab%2Fgrpc_rust" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/AlecZorab/grpc_rust on toolchain ddfd70ee3c3748e597b32f416b0d15a4f6e37685
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/AlecZorab/grpc_rust
[INFO] finished tweaking git repo https://github.com/AlecZorab/grpc_rust
[INFO] tweaked toml for git repo https://github.com/AlecZorab/grpc_rust written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/AlecZorab/grpc_rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded tokio-rustls v0.14.0
[INFO] [stderr]   Downloaded tracing-attributes v0.1.8
[INFO] [stderr]   Downloaded tracing v0.1.15
[INFO] [stderr]   Downloaded rustls v0.18.0
[INFO] [stderr]   Downloaded tracing-core v0.1.10
[INFO] [stderr]   Downloaded anyhow v1.0.31
[INFO] [stderr]   Downloaded async-trait v0.1.35
[INFO] [stderr]   Downloaded multimap v0.8.1
[INFO] [stderr]   Downloaded tonic v0.3.0
[INFO] [stderr]   Downloaded tower-layer v0.3.0
[INFO] [stderr]   Downloaded tonic-build v0.3.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 67a3b6717a14584eab52858756308aad63370f1cf561b59eab50528e0fdf5ffb
[INFO] running `Command { std: "docker" "start" "-a" "67a3b6717a14584eab52858756308aad63370f1cf561b59eab50528e0fdf5ffb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "67a3b6717a14584eab52858756308aad63370f1cf561b59eab50528e0fdf5ffb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "67a3b6717a14584eab52858756308aad63370f1cf561b59eab50528e0fdf5ffb", kill_on_drop: false }`
[INFO] [stdout] 67a3b6717a14584eab52858756308aad63370f1cf561b59eab50528e0fdf5ffb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b21c2ec7dd2c44e543b1d3baab04410357b3e7347819fcdde51ffc3c0ab75f11
[INFO] running `Command { std: "docker" "start" "-a" "b21c2ec7dd2c44e543b1d3baab04410357b3e7347819fcdde51ffc3c0ab75f11", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling syn v1.0.31
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling pin-project-internal v0.4.22
[INFO] [stderr]     Checking slab v0.4.2
[INFO] [stderr]     Checking fnv v1.0.7
[INFO] [stderr]     Checking tower-service v0.3.0
[INFO] [stderr]    Compiling proc-macro-nested v0.1.6
[INFO] [stderr]     Checking pin-utils v0.1.0
[INFO] [stderr]    Compiling either v1.5.3
[INFO] [stderr]     Checking tower-layer v0.3.0
[INFO] [stderr]    Compiling ppv-lite86 v0.2.8
[INFO] [stderr]    Compiling bytes v0.5.4
[INFO] [stderr]     Checking itoa v0.4.6
[INFO] [stderr]    Compiling fixedbitset v0.2.0
[INFO] [stderr]    Compiling httparse v1.3.4
[INFO] [stderr]    Compiling multimap v0.8.1
[INFO] [stderr]     Checking try-lock v0.2.2
[INFO] [stderr]     Checking base64 v0.12.3
[INFO] [stderr]     Checking percent-encoding v2.1.0
[INFO] [stderr]    Compiling ring v0.16.15
[INFO] [stderr]     Checking tracing-core v0.1.10
[INFO] [stderr]    Compiling libc v0.2.71
[INFO] [stderr]    Compiling anyhow v1.0.31
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]    Compiling indexmap v1.4.0
[INFO] [stderr]     Checking net2 v0.2.34
[INFO] [stderr]     Checking getrandom v0.1.14
[INFO] [stderr]     Checking socket2 v0.3.12
[INFO] [stderr]    Compiling itertools v0.8.2
[INFO] [stderr]     Checking http v0.2.1
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]    Compiling which v3.1.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand_pcg v0.2.1
[INFO] [stderr]    Compiling prost-build v0.6.1
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]    Compiling petgraph v0.5.1
[INFO] [stderr]     Checking mio v0.6.22
[INFO] [stderr]     Checking want v0.3.0
[INFO] [stderr]     Checking http-body v0.3.1
[INFO] [stderr]    Compiling tempfile v3.1.0
[INFO] [stderr]     Checking sct v0.6.0
[INFO] [stderr]     Checking webpki v0.21.3
[INFO] [stderr]     Checking rustls v0.18.0
[INFO] [stderr]    Compiling tokio-macros v0.2.5
[INFO] [stderr]    Compiling futures-macro v0.3.5
[INFO] [stderr]    Compiling prost-derive v0.6.1
[INFO] [stderr]    Compiling tracing-attributes v0.1.8
[INFO] [stderr]    Compiling async-stream-impl v0.2.1
[INFO] [stderr]    Compiling async-trait v0.1.35
[INFO] [stderr]     Checking tokio v0.2.22
[INFO] [stderr]     Checking async-stream v0.2.1
[INFO] [stderr]     Checking tracing v0.1.15
[INFO] [stderr]    Compiling prost v0.6.1
[INFO] [stderr]     Checking pin-project v0.4.22
[INFO] [stderr]     Checking futures-util v0.3.5
[INFO] [stderr]     Checking tower-discover v0.3.0
[INFO] [stderr]     Checking tower-load-shed v0.3.0
[INFO] [stderr]     Checking tracing-futures v0.2.4
[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-timeout v0.3.0
[INFO] [stderr]     Checking tower-make v0.3.0
[INFO] [stderr]     Checking tower-buffer v0.3.0
[INFO] [stderr]     Checking tower-retry v0.3.0
[INFO] [stderr]     Checking tokio-rustls v0.14.0
[INFO] [stderr]     Checking tower-limit v0.3.1
[INFO] [stderr]    Compiling tonic-build v0.3.0
[INFO] [stderr]     Checking tower-ready-cache v0.3.1
[INFO] [stderr]     Checking h2 v0.2.5
[INFO] [stderr]     Checking tower-util v0.3.1
[INFO] [stderr]     Checking futures-executor v0.3.5
[INFO] [stderr]    Compiling rust_grpc v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking futures v0.3.5
[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 `rust_grpc v0.1.0 (/opt/rustwide/workdir)`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/build/rust_grpc-cf40d453cfb02286/build-script-build` (exit status: 1)
[INFO] [stderr]   --- stderr
[INFO] [stderr]   error: 'rustfmt' is not installed for the toolchain 'ddfd70ee3c3748e597b32f416b0d15a4f6e37685'
[INFO] [stderr]   note: this is a custom toolchain, which cannot use `rustup component add`
[INFO] [stderr]   help: if you built this toolchain from source, and used `rustup toolchain link`, then you may be able to build the component with `x.py`
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "b21c2ec7dd2c44e543b1d3baab04410357b3e7347819fcdde51ffc3c0ab75f11", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b21c2ec7dd2c44e543b1d3baab04410357b3e7347819fcdde51ffc3c0ab75f11", kill_on_drop: false }`
[INFO] [stdout] b21c2ec7dd2c44e543b1d3baab04410357b3e7347819fcdde51ffc3c0ab75f11