[INFO] cloning repository https://github.com/brson/my-first-contribution
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/brson/my-first-contribution" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbrson%2Fmy-first-contribution", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbrson%2Fmy-first-contribution'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a041783bfc8d90658703a7dc2d5d7dda91c79a57
[INFO] checking brson/my-first-contribution/a041783bfc8d90658703a7dc2d5d7dda91c79a57 against master#8f359beca4e58bc3ae795a666301a8f47023044c for pr-121557
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbrson%2Fmy-first-contribution" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/brson/my-first-contribution on toolchain 8f359beca4e58bc3ae795a666301a8f47023044c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8f359beca4e58bc3ae795a666301a8f47023044c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/brson/my-first-contribution
[INFO] finished tweaking git repo https://github.com/brson/my-first-contribution
[INFO] tweaked toml for git repo https://github.com/brson/my-first-contribution written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/brson/my-first-contribution already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8f359beca4e58bc3ae795a666301a8f47023044c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rustc-serialize v0.3.14
[INFO] [stderr]   Downloaded typeable v0.1.1
[INFO] [stderr]   Downloaded openssl-sys v0.6.2
[INFO] [stderr]   Downloaded mime v0.0.11
[INFO] [stderr]   Downloaded httparse v0.1.2
[INFO] [stderr]   Downloaded num_cpus v0.2.5
[INFO] [stderr]   Downloaded openssl v0.6.2
[INFO] [stderr]   Downloaded gcc v0.3.5
[INFO] [stderr]   Downloaded unicase v0.1.0
[INFO] [stderr]   Downloaded hyper v0.5.0
[INFO] [stderr]   Downloaded lazy_static v0.1.10
[INFO] [stderr]   Downloaded pkg-config v0.3.4
[INFO] [stderr]   Downloaded cookie v0.1.20
[INFO] [stderr]   Downloaded time v0.1.25
[INFO] [stderr]   Downloaded pnacl-build-helper v1.4.0
[INFO] [stderr]   Downloaded url v0.2.34
[INFO] [stderr]   Downloaded libressl-pnacl-sys v2.1.5
[INFO] [stderr]   Downloaded env_logger v0.3.0
[INFO] [stderr]   Downloaded error v0.1.7
[INFO] [stderr]   Downloaded router v0.0.10
[INFO] [stderr]   Downloaded iron v0.1.17
[INFO] [stderr]   Downloaded typemap v0.3.2
[INFO] [stderr]   Downloaded regex v0.1.30
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+8f359beca4e58bc3ae795a666301a8f47023044c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 92083bcf49639b9d3a5ccf128ab232e87d0bb73451146567234fae5239b3f2a4
[INFO] running `Command { std: "docker" "start" "-a" "92083bcf49639b9d3a5ccf128ab232e87d0bb73451146567234fae5239b3f2a4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "92083bcf49639b9d3a5ccf128ab232e87d0bb73451146567234fae5239b3f2a4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "92083bcf49639b9d3a5ccf128ab232e87d0bb73451146567234fae5239b3f2a4", kill_on_drop: false }`
[INFO] [stdout] 92083bcf49639b9d3a5ccf128ab232e87d0bb73451146567234fae5239b3f2a4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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" "RUSTDOCFLAGS=--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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+8f359beca4e58bc3ae795a666301a8f47023044c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 858961a7bb72cf37e541ade7db3c02f73f744e5978cec435e4da9b176f694394
[INFO] running `Command { std: "docker" "start" "-a" "858961a7bb72cf37e541ade7db3c02f73f744e5978cec435e4da9b176f694394", kill_on_drop: false }`
[INFO] [stderr]    Compiling gcc v0.3.5
[INFO] [stderr]     Checking libc v0.1.7
[INFO] [stderr]    Compiling pkg-config v0.3.4
[INFO] [stderr]     Checking traitobject v0.0.1
[INFO] [stderr]     Checking rustc-serialize v0.3.14
[INFO] [stderr]     Checking lazy_static v0.1.10
[INFO] [stderr]     Checking matches v0.1.2
[INFO] [stderr]     Checking bitflags v0.1.1
[INFO] [stderr]     Checking unsafe-any v0.4.1
[INFO] [stderr]     Checking typeable v0.1.1
[INFO] [stderr]     Checking httparse v0.1.2
[INFO] [stdout] error[E0642]: patterns aren't allowed in functions without bodies
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/rustc-serialize-0.3.14/src/serialize.rs:144:45
[INFO] [stdout]     |
[INFO] [stdout] 144 | ...                   &f_name: &str,
[INFO] [stdout]     |                       ^^^^^^^ pattern not allowed in function without body
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking unicase v0.1.0
[INFO] [stderr]     Checking error v0.1.7
[INFO] [stderr]     Checking typemap v0.3.2
[INFO] [stderr]     Checking log v0.3.1
[INFO] [stderr]     Checking num_cpus v0.2.5
[INFO] [stderr]     Checking modifier v0.1.0
[INFO] [stderr]     Checking regex v0.1.30
[INFO] [stderr]     Checking route-recognizer v0.1.11
[INFO] [stderr]     Checking mime v0.0.11
[INFO] [stderr]     Checking plugin v0.2.6
[INFO] [stdout] error[E0277]: the size for values of type `Self` cannot be known at compilation time
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/rustc-serialize-0.3.14/src/serialize.rs:200:41
[INFO] [stdout]     |
[INFO] [stdout] 200 |     fn decode<D: Decoder>(d: &mut D) -> Result<Self, D::Error>;
[INFO] [stdout]     |                                         ^^^^^^^^^^^^^^^^^^^^^^ doesn't have a size known at compile-time
[INFO] [stdout]     |
[INFO] [stdout] note: required by an implicit `Sized` bound in `Result`
[INFO] [stdout]    --> /rustc/8f359beca4e58bc3ae795a666301a8f47023044c/library/core/src/result.rs:502:1
[INFO] [stdout] help: consider further restricting `Self`
[INFO] [stdout]     |
[INFO] [stdout] 200 |     fn decode<D: Decoder>(d: &mut D) -> Result<Self, D::Error> where Self: Sized;
[INFO] [stdout]     |                                                                +++++++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling openssl-sys v0.6.2
[INFO] [stderr]    Compiling time v0.1.25
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0277, E0642.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rustc-serialize` (lib) due to 3 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "858961a7bb72cf37e541ade7db3c02f73f744e5978cec435e4da9b176f694394", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "858961a7bb72cf37e541ade7db3c02f73f744e5978cec435e4da9b176f694394", kill_on_drop: false }`
[INFO] [stdout] 858961a7bb72cf37e541ade7db3c02f73f744e5978cec435e4da9b176f694394