[INFO] cloning repository https://github.com/camp81/exam
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/camp81/exam" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcamp81%2Fexam", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcamp81%2Fexam'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6d710c15c39aa2511226cf2ba4ba0f7065af99a4
[INFO] checking camp81/exam against master#33fdb797f59421c7bbecaa4588ed5d7a31a9494a for pr-87190-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcamp81%2Fexam" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/camp81/exam on toolchain 33fdb797f59421c7bbecaa4588ed5d7a31a9494a
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/camp81/exam
[INFO] finished tweaking git repo https://github.com/camp81/exam
[INFO] tweaked toml for git repo https://github.com/camp81/exam written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/camp81/exam already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 40a6bff2fdc8e1b81731d698ef37c9b6306e7e66345759d4425e071c4d61476d
[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" "40a6bff2fdc8e1b81731d698ef37c9b6306e7e66345759d4425e071c4d61476d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "40a6bff2fdc8e1b81731d698ef37c9b6306e7e66345759d4425e071c4d61476d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "40a6bff2fdc8e1b81731d698ef37c9b6306e7e66345759d4425e071c4d61476d", kill_on_drop: false }`
[INFO] [stdout] 40a6bff2fdc8e1b81731d698ef37c9b6306e7e66345759d4425e071c4d61476d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 80a9641339d9537582a79f30ca64177f2a67ab3c2122a9dd19f498a5d3039844
[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" "80a9641339d9537582a79f30ca64177f2a67ab3c2122a9dd19f498a5d3039844", kill_on_drop: false }`
[INFO] [stderr]     Checking libc v0.2.11
[INFO] [stderr]     Checking winapi v0.2.7
[INFO] [stderr]    Compiling gcc v0.3.28
[INFO] [stderr]     Checking odds v0.2.14
[INFO] [stderr]     Checking regex-syntax v0.3.3
[INFO] [stderr]     Checking utf8-ranges v0.1.3
[INFO] [stderr]     Checking rustc-serialize v0.3.19
[INFO] [stderr]     Checking tiny-keccak v1.0.5
[INFO] [stderr]    Compiling kernel32-sys v0.2.2
[INFO] [stderr]     Checking nodrop v0.1.6
[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 memchr v0.1.11
[INFO] [stderr]     Checking rand v0.3.14
[INFO] [stderr]     Checking arrayvec v0.3.16
[INFO] [stderr]    Compiling eth-secp256k1 v0.5.4 (https://github.com/ethcore/rust-secp256k1#ae7ee3a1)
[INFO] [stderr]     Checking aho-corasick v0.5.2
[INFO] [stderr]     Checking thread-id v2.0.0
[INFO] [stderr]     Checking thread_local v0.2.6
[INFO] [stderr]     Checking regex v0.1.71
[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" "80a9641339d9537582a79f30ca64177f2a67ab3c2122a9dd19f498a5d3039844", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "80a9641339d9537582a79f30ca64177f2a67ab3c2122a9dd19f498a5d3039844", kill_on_drop: false }`
[INFO] [stdout] 80a9641339d9537582a79f30ca64177f2a67ab3c2122a9dd19f498a5d3039844