[INFO] cloning repository https://github.com/otaviopace/mandelbrot
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/otaviopace/mandelbrot" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fotaviopace%2Fmandelbrot", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fotaviopace%2Fmandelbrot'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e9d86a389b3ce61d98d70d773902478ce67b6ecd
[INFO] documenting otaviopace/mandelbrot against 1.75.0 for beta-1.76-rustdoc-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fotaviopace%2Fmandelbrot" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/otaviopace/mandelbrot on toolchain 1.75.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/otaviopace/mandelbrot
[INFO] finished tweaking git repo https://github.com/otaviopace/mandelbrot
[INFO] tweaked toml for git repo https://github.com/otaviopace/mandelbrot written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/otaviopace/mandelbrot 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" "+1.75.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded jpeg-decoder v0.1.14
[INFO] [stderr]   Downloaded num-iter v0.1.35
[INFO] [stderr]   Downloaded lazy_static v1.0.0
[INFO] [stderr]   Downloaded num-integer v0.1.36
[INFO] [stderr]   Downloaded either v1.5.0
[INFO] [stderr]   Downloaded byteorder v1.2.2
[INFO] [stderr]   Downloaded num-traits v0.2.2
[INFO] [stderr]   Downloaded rand v0.4.2
[INFO] [stderr]   Downloaded deflate v0.7.18
[INFO] [stderr]   Downloaded winapi v0.3.4
[INFO] [stderr]   Downloaded libc v0.2.40
[INFO] [stderr]   Downloaded rayon v1.0.1
[INFO] [stderr]   Downloaded rayon-core v1.4.0
[INFO] [stderr]   Downloaded num-bigint v0.1.43
[INFO] [stderr]   Downloaded arrayvec v0.4.7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "+1.75.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8163299bc744fd667c546cce5081d5aa6f09de21fc06c3a677f43eb67e9223c6
[INFO] running `Command { std: "docker" "start" "-a" "8163299bc744fd667c546cce5081d5aa6f09de21fc06c3a677f43eb67e9223c6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8163299bc744fd667c546cce5081d5aa6f09de21fc06c3a677f43eb67e9223c6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8163299bc744fd667c546cce5081d5aa6f09de21fc06c3a677f43eb67e9223c6", kill_on_drop: false }`
[INFO] [stdout] 8163299bc744fd667c546cce5081d5aa6f09de21fc06c3a677f43eb67e9223c6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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=warn" "-e" "RUSTDOCFLAGS=--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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d2d73a7be20a5e5df7422729b8aa2fbd09a60e18ce1087eb409de2bbc584cfec
[INFO] running `Command { std: "docker" "start" "-a" "d2d73a7be20a5e5df7422729b8aa2fbd09a60e18ce1087eb409de2bbc584cfec", kill_on_drop: false }`
[INFO] [stderr]     Checking num-traits v0.2.2
[INFO] [stderr]     Checking libc v0.2.40
[INFO] [stderr]     Checking nodrop v0.1.12
[INFO] [stderr]     Checking cfg-if v0.1.2
[INFO] [stderr]     Checking memoffset v0.2.1
[INFO] [stderr]     Checking lazy_static v1.0.0
[INFO] [stderr]     Checking scopeguard v0.3.3
[INFO] [stderr]    Compiling rayon-core v1.4.0
[INFO] [stderr]     Checking byteorder v1.2.2
[INFO] [stderr]     Checking adler32 v1.0.2
[INFO] [stderr]     Checking either v1.5.0
[INFO] [stderr]     Checking color_quant v1.0.0
[INFO] [stderr]     Checking crossbeam-utils v0.2.2
[INFO] [stderr]     Checking arrayvec v0.4.7
[INFO] [stderr]     Checking gif v0.9.2
[INFO] [stderr]     Checking deflate v0.7.18
[INFO] [stderr]     Checking crossbeam-epoch v0.3.1
[INFO] [stderr]     Checking rand v0.4.2
[INFO] [stderr]     Checking num_cpus v1.8.0
[INFO] [stderr]     Checking crossbeam-deque v0.2.0
[INFO] [stderr]     Checking num-integer v0.1.36
[INFO] [stderr]     Checking num-traits v0.1.43
[INFO] [stderr]     Checking num-complex v0.1.43
[INFO] [stderr]     Checking enum_primitive v0.1.1
[INFO] [stderr]     Checking num-iter v0.1.35
[INFO] [stderr]     Checking png v0.7.0
[INFO] [stderr]     Checking num-bigint v0.1.43
[INFO] [stderr]     Checking rayon v1.0.1
[INFO] [stderr]     Checking num-rational v0.1.42
[INFO] [stderr]     Checking num v0.1.42
[INFO] [stderr]     Checking jpeg-decoder v0.1.14
[INFO] [stderr]     Checking image v0.13.0
[INFO] [stderr]  Documenting mandelbrot v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unclosed HTML tag `left`
[INFO] [stdout]   --> src/lib.rs:29:44
[INFO] [stdout]    |
[INFO] [stdout] 29 | /// Specifically, `s` should have the form <left><sep><right>, where <sep> is
[INFO] [stdout]    |                                            ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(rustdoc::invalid_html_tags)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unclosed HTML tag `sep`
[INFO] [stdout]   --> src/lib.rs:29:50
[INFO] [stdout]    |
[INFO] [stdout] 29 | /// Specifically, `s` should have the form <left><sep><right>, where <sep> is
[INFO] [stdout]    |                                                  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unclosed HTML tag `right`
[INFO] [stdout]   --> src/lib.rs:29:55
[INFO] [stdout]    |
[INFO] [stdout] 29 | /// Specifically, `s` should have the form <left><sep><right>, where <sep> is
[INFO] [stdout]    |                                                       ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unclosed HTML tag `sep`
[INFO] [stdout]   --> src/lib.rs:29:70
[INFO] [stdout]    |
[INFO] [stdout] 29 | /// Specifically, `s` should have the form <left><sep><right>, where <sep> is
[INFO] [stdout]    |                                                                      ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.69s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: rustc-serialize v0.3.24
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] [stderr]    Generated /opt/rustwide/target/doc/mandelbrot/index.html
[INFO] running `Command { std: "docker" "inspect" "d2d73a7be20a5e5df7422729b8aa2fbd09a60e18ce1087eb409de2bbc584cfec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d2d73a7be20a5e5df7422729b8aa2fbd09a60e18ce1087eb409de2bbc584cfec", kill_on_drop: false }`
[INFO] [stdout] d2d73a7be20a5e5df7422729b8aa2fbd09a60e18ce1087eb409de2bbc584cfec
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "DOCS_RS=1" "-e" "RUSTC_BOOTSTRAP=1" "-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" "+1.75.0" "rustdoc" "--lib" "-Zrustdoc-map" "-Z" "unstable-options" "--config" "build.rustdocflags=[\"-Z\", \"unstable-options\", \"--document-private-items\"]" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ed331a845b9080ec33a02feb4a364a4c24db7a3babc5c8b840144e690614b250
[INFO] running `Command { std: "docker" "start" "-a" "ed331a845b9080ec33a02feb4a364a4c24db7a3babc5c8b840144e690614b250", kill_on_drop: false }`
[INFO] [stderr]  Documenting mandelbrot v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unclosed HTML tag `left`
[INFO] [stdout]   --> src/lib.rs:29:44
[INFO] [stdout]    |
[INFO] [stdout] 29 | /// Specifically, `s` should have the form <left><sep><right>, where <sep> is
[INFO] [stdout]    |                                            ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(rustdoc::invalid_html_tags)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unclosed HTML tag `sep`
[INFO] [stdout]   --> src/lib.rs:29:50
[INFO] [stdout]    |
[INFO] [stdout] 29 | /// Specifically, `s` should have the form <left><sep><right>, where <sep> is
[INFO] [stdout]    |                                                  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unclosed HTML tag `right`
[INFO] [stdout]   --> src/lib.rs:29:55
[INFO] [stdout]    |
[INFO] [stdout] 29 | /// Specifically, `s` should have the form <left><sep><right>, where <sep> is
[INFO] [stdout]    |                                                       ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unclosed HTML tag `sep`
[INFO] [stdout]   --> src/lib.rs:29:70
[INFO] [stdout]    |
[INFO] [stdout] 29 | /// Specifically, `s` should have the form <left><sep><right>, where <sep> is
[INFO] [stdout]    |                                                                      ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.65s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: rustc-serialize v0.3.24
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] [stderr]    Generated /opt/rustwide/target/doc/mandelbrot/index.html
[INFO] running `Command { std: "docker" "inspect" "ed331a845b9080ec33a02feb4a364a4c24db7a3babc5c8b840144e690614b250", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ed331a845b9080ec33a02feb4a364a4c24db7a3babc5c8b840144e690614b250", kill_on_drop: false }`
[INFO] [stdout] ed331a845b9080ec33a02feb4a364a4c24db7a3babc5c8b840144e690614b250
[INFO] documenting otaviopace/mandelbrot against beta-2024-01-11 for beta-1.76-rustdoc-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fotaviopace%2Fmandelbrot" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/otaviopace/mandelbrot on toolchain beta-2024-01-11
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2024-01-11" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/otaviopace/mandelbrot
[INFO] finished tweaking git repo https://github.com/otaviopace/mandelbrot
[INFO] tweaked toml for git repo https://github.com/otaviopace/mandelbrot written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/otaviopace/mandelbrot 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" "+beta-2024-01-11" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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" "+beta-2024-01-11" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8cd61fe4748e4b799a3b82c628f17c6224eca68609c507fa0253b050dc3852f0
[INFO] running `Command { std: "docker" "start" "-a" "8cd61fe4748e4b799a3b82c628f17c6224eca68609c507fa0253b050dc3852f0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8cd61fe4748e4b799a3b82c628f17c6224eca68609c507fa0253b050dc3852f0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8cd61fe4748e4b799a3b82c628f17c6224eca68609c507fa0253b050dc3852f0", kill_on_drop: false }`
[INFO] [stdout] 8cd61fe4748e4b799a3b82c628f17c6224eca68609c507fa0253b050dc3852f0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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" "RUSTDOCFLAGS=--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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2024-01-11" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 03f9f76c107f7d6fc59c68c33c595054747784c24a6c22ad46eda3699bce839d
[INFO] running `Command { std: "docker" "start" "-a" "03f9f76c107f7d6fc59c68c33c595054747784c24a6c22ad46eda3699bce839d", kill_on_drop: false }`
[INFO] [stderr]     Checking num-traits v0.2.2
[INFO] [stderr]     Checking libc v0.2.40
[INFO] [stderr]     Checking nodrop v0.1.12
[INFO] [stderr]     Checking cfg-if v0.1.2
[INFO] [stderr]     Checking scopeguard v0.3.3
[INFO] [stderr]     Checking lazy_static v1.0.0
[INFO] [stderr]     Checking memoffset v0.2.1
[INFO] [stderr]    Compiling rayon-core v1.4.0
[INFO] [stderr]     Checking rustc-serialize v0.3.24
[INFO] [stderr]     Checking byteorder v1.2.2
[INFO] [stderr]     Checking adler32 v1.0.2
[INFO] [stderr]     Checking either v1.5.0
[INFO] [stderr]     Checking color_quant v1.0.0
[INFO] [stderr]     Checking arrayvec v0.4.7
[INFO] [stderr]     Checking crossbeam-utils v0.2.2
[INFO] [stderr]     Checking gif v0.9.2
[INFO] [stderr]     Checking deflate v0.7.18
[INFO] [stdout] error[E0310]: the parameter type `T` may not live long enough
[INFO] [stdout]     --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/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]      |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |     |
[INFO] [stdout]      |     the parameter type `T` must be valid for the static lifetime...
[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]     --> /rustc/3a3478ec4f1acb7c16292eb2f44069f943525728/library/alloc/src/borrow.rs:180:30
[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 crossbeam-epoch v0.3.1
[INFO] [stderr]     Checking rand v0.4.2
[INFO] [stderr]     Checking num_cpus v1.8.0
[INFO] [stderr]     Checking crossbeam-deque v0.2.0
[INFO] [stderr]     Checking num-integer v0.1.36
[INFO] [stderr]     Checking num-traits v0.1.43
[INFO] [stderr]     Checking enum_primitive v0.1.1
[INFO] [stderr]     Checking num-iter v0.1.35
[INFO] [stderr]     Checking png v0.7.0
[INFO] [stdout] error: aborting due to 1 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` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "03f9f76c107f7d6fc59c68c33c595054747784c24a6c22ad46eda3699bce839d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "03f9f76c107f7d6fc59c68c33c595054747784c24a6c22ad46eda3699bce839d", kill_on_drop: false }`
[INFO] [stdout] 03f9f76c107f7d6fc59c68c33c595054747784c24a6c22ad46eda3699bce839d
