[INFO] fetching crate lol-core 0.7.6...
[INFO] testing lol-core-0.7.6 against master#a77da2d454e6caa227a85b16410b95f93495e7e0 for pr-91031
[INFO] extracting crate lol-core 0.7.6 into /workspace/builds/worker-83/source
[INFO] validating manifest of crates.io crate lol-core 0.7.6 on toolchain a77da2d454e6caa227a85b16410b95f93495e7e0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate lol-core 0.7.6
[INFO] finished tweaking crates.io crate lol-core 0.7.6
[INFO] tweaked toml for crates.io crate lol-core 0.7.6 written to /workspace/builds/worker-83/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "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 rocksdb v0.17.0
[INFO] [stderr]   Downloaded phi-detector v0.3.0
[INFO] [stderr]   Downloaded librocksdb-sys v6.20.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-83/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-83/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f2b75dc09de42a543a11931cfb2e9bf183c7fce9981aa0d8032c5d43c783d9b4
[INFO] running `Command { std: "docker" "start" "-a" "f2b75dc09de42a543a11931cfb2e9bf183c7fce9981aa0d8032c5d43c783d9b4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f2b75dc09de42a543a11931cfb2e9bf183c7fce9981aa0d8032c5d43c783d9b4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f2b75dc09de42a543a11931cfb2e9bf183c7fce9981aa0d8032c5d43c783d9b4", kill_on_drop: false }`
[INFO] [stdout] f2b75dc09de42a543a11931cfb2e9bf183c7fce9981aa0d8032c5d43c783d9b4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-83/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-83/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9f14509f7d1b1f3143e20766271c10d9de0c03e28388b017c136f798136b13f4
[INFO] running `Command { std: "docker" "start" "-a" "9f14509f7d1b1f3143e20766271c10d9de0c03e28388b017c136f798136b13f4", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling serde v1.0.130
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling either v1.6.1
[INFO] [stderr]    Compiling hashbrown v0.11.2
[INFO] [stderr]    Compiling anyhow v1.0.47
[INFO] [stderr]    Compiling futures-channel v0.3.17
[INFO] [stderr]    Compiling futures-task v0.3.17
[INFO] [stderr]    Compiling proc-macro-nested v0.1.7
[INFO] [stderr]    Compiling slab v0.4.5
[INFO] [stderr]    Compiling futures-io v0.3.17
[INFO] [stderr]    Compiling httparse v1.5.1
[INFO] [stderr]    Compiling fixedbitset v0.2.0
[INFO] [stderr]    Compiling tower-service v0.3.1
[INFO] [stderr]    Compiling try-lock v0.2.3
[INFO] [stderr]    Compiling multimap v0.8.3
[INFO] [stderr]    Compiling httpdate v1.0.2
[INFO] [stderr]    Compiling tower-layer v0.3.1
[INFO] [stderr]    Compiling phi-detector v0.3.0
[INFO] [stderr]    Compiling sync_wrapper v0.1.1
[INFO] [stderr]    Compiling indexmap v1.7.0
[INFO] [stderr]    Compiling futures-macro v0.3.17
[INFO] [stderr]    Compiling tokio v1.14.0
[INFO] [stderr]    Compiling futures-util v0.3.17
[INFO] [stderr]    Compiling tracing-core v0.1.21
[INFO] [stderr]    Compiling socket2 v0.4.2
[INFO] [stderr]    Compiling serde_derive v1.0.130
[INFO] [stderr]    Compiling pin-project-internal v1.0.8
[INFO] [stderr]    Compiling async-stream-impl v0.3.2
[INFO] [stderr]    Compiling rand v0.8.4
[INFO] [stderr]    Compiling itertools v0.10.1
[INFO] [stderr]    Compiling which v4.2.2
[INFO] [stderr]    Compiling prost-build v0.8.0
[INFO] [stderr]    Compiling tempfile v3.2.0
[INFO] [stderr]    Compiling mio v0.7.14
[INFO] [stderr]    Compiling tracing v0.1.29
[INFO] [stderr]    Compiling want v0.3.0
[INFO] [stderr]    Compiling petgraph v0.5.1
[INFO] [stderr]    Compiling prost-derive v0.8.0
[INFO] [stderr]    Compiling async-stream v0.3.2
[INFO] [stderr]    Compiling pin-project v1.0.8
[INFO] [stderr]    Compiling tracing-futures v0.2.5
[INFO] [stderr]    Compiling futures-executor v0.3.17
[INFO] [stderr]    Compiling futures v0.3.17
[INFO] [stderr]    Compiling bytes v1.1.0
[INFO] [stderr]    Compiling bincode v1.3.3
[INFO] [stderr]    Compiling serde_bytes v0.11.5
[INFO] [stderr]    Compiling prost v0.8.0
[INFO] [stderr]    Compiling http v0.2.5
[INFO] [stderr]    Compiling prost-types v0.8.0
[INFO] [stderr]    Compiling http-body v0.4.4
[INFO] [stderr]    Compiling tonic-build v0.5.2
[INFO] [stderr]    Compiling lol-core v0.7.6 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling tokio-util v0.6.9
[INFO] [stderr]    Compiling tokio-io-timeout v1.1.1
[INFO] [stderr]    Compiling tokio-stream v0.1.8
[INFO] [stderr]    Compiling h2 v0.3.7
[INFO] [stderr]    Compiling tower v0.4.11
[INFO] [stderr] error: failed to run custom build command for `lol-core v0.7.6 (/opt/rustwide/workdir)`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/build/lol-core-182f2745fd2d25e6/build-script-build` (exit status: 1)
[INFO] [stderr]   --- stderr
[INFO] [stderr]   error: 'rustfmt' is not installed for the toolchain 'a77da2d454e6caa227a85b16410b95f93495e7e0'
[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" "9f14509f7d1b1f3143e20766271c10d9de0c03e28388b017c136f798136b13f4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9f14509f7d1b1f3143e20766271c10d9de0c03e28388b017c136f798136b13f4", kill_on_drop: false }`
[INFO] [stdout] 9f14509f7d1b1f3143e20766271c10d9de0c03e28388b017c136f798136b13f4