[INFO] cloning repository https://github.com/leohio/fractal_art
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/leohio/fractal_art" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fleohio%2Ffractal_art", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fleohio%2Ffractal_art'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 55ae4e4d51922e55403c3482fd290e0838861f1e
[INFO] checking leohio/fractal_art against try#d4af306fdd6ab261dfeb0aa57301d08b31b2dd92 for pr-105483
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fleohio%2Ffractal_art" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/leohio/fractal_art on toolchain d4af306fdd6ab261dfeb0aa57301d08b31b2dd92
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d4af306fdd6ab261dfeb0aa57301d08b31b2dd92" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/leohio/fractal_art
[INFO] finished tweaking git repo https://github.com/leohio/fractal_art
[INFO] tweaked toml for git repo https://github.com/leohio/fractal_art written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/leohio/fractal_art already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d4af306fdd6ab261dfeb0aa57301d08b31b2dd92" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:bb5b0feb4f87116a4ea905b7ff5bf5b85913db05e9f0fbc1abdd3168928d9075" "/opt/rustwide/cargo-home/bin/cargo" "+d4af306fdd6ab261dfeb0aa57301d08b31b2dd92" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 440059e271ebda305e3ab5dd1d97c735a8d9b31ab65713208992b8563069930e
[INFO] running `Command { std: "docker" "start" "-a" "440059e271ebda305e3ab5dd1d97c735a8d9b31ab65713208992b8563069930e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "440059e271ebda305e3ab5dd1d97c735a8d9b31ab65713208992b8563069930e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "440059e271ebda305e3ab5dd1d97c735a8d9b31ab65713208992b8563069930e", kill_on_drop: false }`
[INFO] [stdout] 440059e271ebda305e3ab5dd1d97c735a8d9b31ab65713208992b8563069930e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:bb5b0feb4f87116a4ea905b7ff5bf5b85913db05e9f0fbc1abdd3168928d9075" "/opt/rustwide/cargo-home/bin/cargo" "+d4af306fdd6ab261dfeb0aa57301d08b31b2dd92" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f751608e820badd6db157d7eaaccf0de2d70ce6bfdba9ef7841da000709e82d0
[INFO] running `Command { std: "docker" "start" "-a" "f751608e820badd6db157d7eaaccf0de2d70ce6bfdba9ef7841da000709e82d0", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.6
[INFO] [stderr]    Compiling num-integer v0.1.39
[INFO] [stderr]    Compiling libc v0.2.45
[INFO] [stderr]     Checking rustc-serialize v0.3.24
[INFO] [stderr]    Compiling num-iter v0.1.37
[INFO] [stdout] error[E0310]: the parameter type `T` may not live long enough
[INFO] [stdout]     --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rustc-serialize-0.3.24/src/serialize.rs:1155:5
[INFO] [stdout]      |
[INFO] [stdout] 1155 |     fn decode<D: Decoder>(d: &mut D) -> Result<Cow<'static, T>, D::Error> {
[INFO] [stdout]      |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ...so that the type `T` will meet its required lifetime bounds...
[INFO] [stdout]      |
[INFO] [stdout] note: ...that is required by this bound
[INFO] [stdout] help: consider adding an explicit lifetime bound...
[INFO] [stdout]      |
[INFO] [stdout] 1151 | impl<'a, T: ?Sized + 'static> Decodable for Cow<'a, T>
[INFO] [stdout]      |                    +++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking rand v0.4.3
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0310`.
[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] running `Command { std: "docker" "inspect" "f751608e820badd6db157d7eaaccf0de2d70ce6bfdba9ef7841da000709e82d0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f751608e820badd6db157d7eaaccf0de2d70ce6bfdba9ef7841da000709e82d0", kill_on_drop: false }`
[INFO] [stdout] f751608e820badd6db157d7eaaccf0de2d70ce6bfdba9ef7841da000709e82d0