[INFO] cloning repository https://github.com/notryanb/fractals_rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/notryanb/fractals_rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnotryanb%2Ffractals_rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnotryanb%2Ffractals_rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 64895ea4134929848e8dac6ade89e8d0ff8d1151
[INFO] checking notryanb/fractals_rust against master#5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f for pr-87248
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnotryanb%2Ffractals_rust" "/workspace/builds/worker-13/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-13/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/notryanb/fractals_rust on toolchain 5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/notryanb/fractals_rust
[INFO] finished tweaking git repo https://github.com/notryanb/fractals_rust
[INFO] tweaked toml for git repo https://github.com/notryanb/fractals_rust written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate git repo https://github.com/notryanb/fractals_rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a44bc5c53320ac2a44cdd91e9b327952c4ed78d3654c53c3a925f5818ca92233
[INFO] running `Command { std: "docker" "start" "-a" "a44bc5c53320ac2a44cdd91e9b327952c4ed78d3654c53c3a925f5818ca92233", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a44bc5c53320ac2a44cdd91e9b327952c4ed78d3654c53c3a925f5818ca92233", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a44bc5c53320ac2a44cdd91e9b327952c4ed78d3654c53c3a925f5818ca92233", kill_on_drop: false }`
[INFO] [stdout] a44bc5c53320ac2a44cdd91e9b327952c4ed78d3654c53c3a925f5818ca92233
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 51ea45456809009d901448875b873eb1a2196ed88d99e3251cfd2b1a6105ee37
[INFO] running `Command { std: "docker" "start" "-a" "51ea45456809009d901448875b873eb1a2196ed88d99e3251cfd2b1a6105ee37", kill_on_drop: false }`
[INFO] [stderr]     Checking libc v0.2.17
[INFO] [stderr]     Checking num-traits v0.1.36
[INFO] [stderr]    Compiling gcc v0.3.38
[INFO] [stderr]     Checking rustc-serialize v0.3.19
[INFO] [stderr]     Checking bitflags v0.7.0
[INFO] [stderr]     Checking lzw v0.10.0
[INFO] [stderr]     Checking color_quant v1.0.0
[INFO] [stderr]     Checking inflate v0.1.1
[INFO] [stderr]     Checking scoped_threadpool v0.1.7
[INFO] [stdout] error[E0642]: patterns aren't allowed in functions without bodies
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rustc-serialize-0.3.19/src/serialize.rs:147:45
[INFO] [stdout]     |
[INFO] [stdout] 147 | ...                   &f_name: &str,
[INFO] [stdout]     |                       ^^^^^^^ pattern not allowed in function without body
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking rand v0.3.14
[INFO] [stderr]     Checking num_cpus v1.1.0
[INFO] [stderr]     Checking gif v0.9.0
[INFO] [stderr]     Checking num-integer v0.1.32
[INFO] [stderr]    Compiling miniz-sys v0.1.7
[INFO] [stderr]     Checking deque v0.3.1
[INFO] [stderr]     Checking num-iter v0.1.32
[INFO] [stderr]     Checking rayon v0.4.3
[INFO] [stderr]     Checking num v0.1.36
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0642`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rustc-serialize` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "51ea45456809009d901448875b873eb1a2196ed88d99e3251cfd2b1a6105ee37", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "51ea45456809009d901448875b873eb1a2196ed88d99e3251cfd2b1a6105ee37", kill_on_drop: false }`
[INFO] [stdout] 51ea45456809009d901448875b873eb1a2196ed88d99e3251cfd2b1a6105ee37