[INFO] cloning repository https://github.com/varentsov/rust-mosaic
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/varentsov/rust-mosaic" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvarentsov%2Frust-mosaic", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvarentsov%2Frust-mosaic'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8cbd6568c3cc7792706d53d2596606535dc182f6
[INFO] checking varentsov/rust-mosaic against 1.55.0 for beta-1.56-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvarentsov%2Frust-mosaic" "/workspace/builds/worker-40/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-40/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/varentsov/rust-mosaic on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/varentsov/rust-mosaic
[INFO] finished tweaking git repo https://github.com/varentsov/rust-mosaic
[INFO] tweaked toml for git repo https://github.com/varentsov/rust-mosaic written to /workspace/builds/worker-40/source/Cargo.toml
[INFO] crate git repo https://github.com/varentsov/rust-mosaic already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "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 gcc v0.3.13
[INFO] [stderr]   Downloaded memchr v0.1.6
[INFO] [stderr]   Downloaded aho-corasick v0.3.2
[INFO] [stderr]   Downloaded rand v0.3.8
[INFO] [stderr]   Downloaded num v0.1.25
[INFO] [stderr]   Downloaded libc v0.1.8
[INFO] [stderr]   Downloaded byteorder v0.3.11
[INFO] [stderr]   Downloaded regex-syntax v0.2.2
[INFO] [stderr]   Downloaded strsim v0.3.0
[INFO] [stderr]   Downloaded regex v0.1.41
[INFO] [stderr]   Downloaded image v0.3.12
[INFO] [stderr]   Downloaded docopt v0.6.72
[INFO] [stderr]   Downloaded rustc-serialize v0.3.15
[INFO] [stderr]   Downloaded cbor v0.3.16
[INFO] [stderr]   Downloaded winapi v0.2.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-40/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-40/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] dc4199af3a70abdb60187106dac5aaac9c3539b0de7aaf38ff8b33586b5a5a75
[INFO] running `Command { std: "docker" "start" "-a" "dc4199af3a70abdb60187106dac5aaac9c3539b0de7aaf38ff8b33586b5a5a75", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dc4199af3a70abdb60187106dac5aaac9c3539b0de7aaf38ff8b33586b5a5a75", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dc4199af3a70abdb60187106dac5aaac9c3539b0de7aaf38ff8b33586b5a5a75", kill_on_drop: false }`
[INFO] [stdout] dc4199af3a70abdb60187106dac5aaac9c3539b0de7aaf38ff8b33586b5a5a75
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-40/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-40/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ba86699eb3509a683972305d45689d8afe47a4f89d09793906d8b538bb0835e7
[INFO] running `Command { std: "docker" "start" "-a" "ba86699eb3509a683972305d45689d8afe47a4f89d09793906d8b538bb0835e7", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking libc v0.1.8
[INFO] [stderr]    Compiling gcc v0.3.13
[INFO] [stderr]     Checking rustc-serialize v0.3.15
[INFO] [stderr]     Checking lzw v0.8.0
[INFO] [stderr]     Checking color_quant v1.0.0
[INFO] [stderr]     Checking byteorder v0.3.11
[INFO] [stderr]     Checking bitflags v0.3.2
[INFO] [stderr]     Checking regex-syntax v0.2.2
[INFO] [stderr]     Checking strsim v0.3.0
[INFO] [stderr]     Checking glob v0.2.10
[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-0.3.15/src/serialize.rs:145:45
[INFO] [stdout]     |
[INFO] [stdout] 145 | ...                   &f_name: &str,
[INFO] [stdout]     |                       ^^^^^^^ pattern not allowed in function without body
[INFO] [stdout] 
[INFO] [stdout] 
[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/github.com-1ecc6299db9ec823/rustc-serialize-0.3.15/src/serialize.rs:201:41
[INFO] [stdout]     |
[INFO] [stdout] 201 |     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] help: consider further restricting `Self`
[INFO] [stdout]     |
[INFO] [stdout] 201 |     fn decode<D: Decoder>(d: &mut D) -> Result<Self, D::Error> where Self: Sized;
[INFO] [stdout]     |                                                                ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking gif v0.5.0
[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` due to 3 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "ba86699eb3509a683972305d45689d8afe47a4f89d09793906d8b538bb0835e7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ba86699eb3509a683972305d45689d8afe47a4f89d09793906d8b538bb0835e7", kill_on_drop: false }`
[INFO] [stdout] ba86699eb3509a683972305d45689d8afe47a4f89d09793906d8b538bb0835e7
