[INFO] cloning repository https://github.com/elliott10/cargo-xbuild
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/elliott10/cargo-xbuild" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Felliott10%2Fcargo-xbuild", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Felliott10%2Fcargo-xbuild'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] badbcd500bc5f306ef5326fbb2d33c28d14a166c
[INFO] documenting elliott10/cargo-xbuild 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%2Felliott10%2Fcargo-xbuild" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/elliott10/cargo-xbuild 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/elliott10/cargo-xbuild
[INFO] finished tweaking git repo https://github.com/elliott10/cargo-xbuild
[INFO] tweaked toml for git repo https://github.com/elliott10/cargo-xbuild written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/elliott10/cargo-xbuild 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]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded thread-id v3.3.0
[INFO] [stderr]   Downloaded cargo_metadata v0.5.8
[INFO] [stderr]   Downloaded parking_lot v0.3.8
[INFO] [stderr]   Downloaded quote v0.6.8
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[INFO] [stderr]   Downloaded cfg-if v0.1.6
[INFO] [stderr]   Downloaded same-file v0.1.3
[INFO] [stderr]   Downloaded remove_dir_all v0.5.1
[INFO] [stderr]   Downloaded error-chain v0.7.2
[INFO] [stderr]   Downloaded parking_lot_core v0.2.14
[INFO] [stderr]   Downloaded itoa v0.4.3
[INFO] [stderr]   Downloaded error-chain v0.11.0
[INFO] [stderr]   Downloaded rand v0.4.3
[INFO] [stderr]   Downloaded backtrace-sys v0.1.24
[INFO] [stderr]   Downloaded winapi v0.3.6
[INFO] [stderr]   Downloaded syn v0.15.13
[INFO] [stderr]   Downloaded serde_derive v1.0.80
[INFO] [stderr]   Downloaded owning_ref v0.2.4
[INFO] [stderr]   Downloaded proc-macro2 v0.4.20
[INFO] [stderr]   Downloaded bitflags v1.0.4
[INFO] [stderr]   Downloaded cc v1.0.25
[INFO] [stderr]   Downloaded toml v0.2.1
[INFO] [stderr]   Downloaded serde_json v1.0.32
[INFO] [stderr]   Downloaded fs2 v0.4.3
[INFO] [stderr]   Downloaded ryu v0.2.6
[INFO] [stderr]   Downloaded serde v1.0.80
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 14e7d0b44358a58b27e56db6059abf864674f4273ed5811ac5f9f2aea09a7a3c
[INFO] running `Command { std: "docker" "start" "-a" "14e7d0b44358a58b27e56db6059abf864674f4273ed5811ac5f9f2aea09a7a3c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "14e7d0b44358a58b27e56db6059abf864674f4273ed5811ac5f9f2aea09a7a3c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "14e7d0b44358a58b27e56db6059abf864674f4273ed5811ac5f9f2aea09a7a3c", kill_on_drop: false }`
[INFO] [stdout] 14e7d0b44358a58b27e56db6059abf864674f4273ed5811ac5f9f2aea09a7a3c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] caf71912cce0670441f1aa8b6bde611fa6055b0c929fa7293ada39b9eb824481
[INFO] running `Command { std: "docker" "start" "-a" "caf71912cce0670441f1aa8b6bde611fa6055b0c929fa7293ada39b9eb824481", kill_on_drop: false }`
[INFO] [stderr]     Checking libc v0.2.43
[INFO] [stderr]    Compiling cc v1.0.25
[INFO] [stderr]    Compiling proc-macro2 v0.4.20
[INFO] [stderr]    Compiling serde v1.0.80
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]     Checking cfg-if v0.1.6
[INFO] [stderr]    Compiling ryu v0.2.6
[INFO] [stderr]     Checking rustc-demangle v0.1.9
[INFO] [stderr]     Checking semver-parser v0.7.0
[INFO] [stderr]     Checking itoa v0.4.3
[INFO] [stderr]    Compiling cargo-xbuild v0.5.6 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking remove_dir_all v0.5.1
[INFO] [stderr]     Checking semver v0.1.20
[INFO] [stderr]     Checking same-file v0.1.3
[INFO] [stderr]     Checking walkdir v1.0.7
[INFO] [stderr]     Checking rand v0.4.3
[INFO] [stderr]     Checking rustc_version v0.1.7
[INFO] [stderr]     Checking fs2 v0.4.3
[INFO] [stderr]     Checking toml v0.2.1
[INFO] [stderr]    Compiling backtrace-sys v0.1.24
[INFO] [stderr]    Compiling quote v0.6.8
[INFO] [stderr]    Compiling syn v0.15.13
[INFO] [stderr]     Checking tempdir v0.3.7
[INFO] [stderr]     Checking backtrace v0.3.9
[INFO] [stderr]     Checking error-chain v0.11.0
[INFO] [stderr]     Checking error-chain v0.7.2
[INFO] [stderr]    Compiling serde_derive v1.0.80
[INFO] [stderr]     Checking serde_json v1.0.32
[INFO] [stderr]     Checking semver v0.9.0
[INFO] [stderr]     Checking cargo_metadata v0.5.8
[INFO] [stderr]  Documenting cargo-xbuild v0.5.6 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/flock.rs:139:11
[INFO] [stdout]     |
[INFO] [stdout] 139 |     try: &Fn() -> io::Result<()>,
[INFO] [stdout]     |           ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 139 |     try: &dyn Fn() -> io::Result<()>,
[INFO] [stdout]     |           +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/flock.rs:140:13
[INFO] [stdout]     |
[INFO] [stdout] 140 |     block: &Fn() -> io::Result<()>,
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 140 |     block: &dyn Fn() -> io::Result<()>,
[INFO] [stdout]     |             +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 17.73s
[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/xargo_lib/index.html
[INFO] [stderr]    Generated /opt/rustwide/target/doc/cargo_xbuild/index.html
[INFO] [stderr]    Generated /opt/rustwide/target/doc/cargo_xclippy/index.html
[INFO] [stderr]    Generated /opt/rustwide/target/doc/cargo_xrun/index.html
[INFO] [stderr]    Generated /opt/rustwide/target/doc/cargo_xrustc/index.html
[INFO] running `Command { std: "docker" "inspect" "caf71912cce0670441f1aa8b6bde611fa6055b0c929fa7293ada39b9eb824481", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "caf71912cce0670441f1aa8b6bde611fa6055b0c929fa7293ada39b9eb824481", kill_on_drop: false }`
[INFO] [stdout] caf71912cce0670441f1aa8b6bde611fa6055b0c929fa7293ada39b9eb824481
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] b3dbed7992536c3f7e6fc126a107ad51e48972037b4a6f9435ea143bd5049c09
[INFO] running `Command { std: "docker" "start" "-a" "b3dbed7992536c3f7e6fc126a107ad51e48972037b4a6f9435ea143bd5049c09", kill_on_drop: false }`
[INFO] [stderr]  Documenting cargo-xbuild v0.5.6 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.72s
[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/xargo_lib/index.html
[INFO] running `Command { std: "docker" "inspect" "b3dbed7992536c3f7e6fc126a107ad51e48972037b4a6f9435ea143bd5049c09", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b3dbed7992536c3f7e6fc126a107ad51e48972037b4a6f9435ea143bd5049c09", kill_on_drop: false }`
[INFO] [stdout] b3dbed7992536c3f7e6fc126a107ad51e48972037b4a6f9435ea143bd5049c09
[INFO] documenting elliott10/cargo-xbuild 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%2Felliott10%2Fcargo-xbuild" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/elliott10/cargo-xbuild 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/elliott10/cargo-xbuild
[INFO] finished tweaking git repo https://github.com/elliott10/cargo-xbuild
[INFO] tweaked toml for git repo https://github.com/elliott10/cargo-xbuild written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/elliott10/cargo-xbuild 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 81ed79b0a5ca20f59b53b952ba3d19027c24eb254b9aafd902fc6710910ca838
[INFO] running `Command { std: "docker" "start" "-a" "81ed79b0a5ca20f59b53b952ba3d19027c24eb254b9aafd902fc6710910ca838", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "81ed79b0a5ca20f59b53b952ba3d19027c24eb254b9aafd902fc6710910ca838", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "81ed79b0a5ca20f59b53b952ba3d19027c24eb254b9aafd902fc6710910ca838", kill_on_drop: false }`
[INFO] [stdout] 81ed79b0a5ca20f59b53b952ba3d19027c24eb254b9aafd902fc6710910ca838
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 4a0d0e6a1fa53b2f232449fe05d98b2755927b5ed69e8ae3816950e4042a6c44
[INFO] running `Command { std: "docker" "start" "-a" "4a0d0e6a1fa53b2f232449fe05d98b2755927b5ed69e8ae3816950e4042a6c44", kill_on_drop: false }`
[INFO] [stderr]     Checking libc v0.2.43
[INFO] [stderr]    Compiling cc v1.0.25
[INFO] [stderr]    Compiling proc-macro2 v0.4.20
[INFO] [stderr]    Compiling serde v1.0.80
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling ryu v0.2.6
[INFO] [stderr]     Checking rustc-demangle v0.1.9
[INFO] [stderr]     Checking cfg-if v0.1.6
[INFO] [stderr]     Checking itoa v0.4.3
[INFO] [stderr]     Checking semver-parser v0.7.0
[INFO] [stderr]     Checking remove_dir_all v0.5.1
[INFO] [stderr]     Checking semver v0.1.20
[INFO] [stderr]     Checking same-file v0.1.3
[INFO] [stderr]     Checking rustc-serialize v0.3.24
[INFO] [stderr]    Compiling cargo-xbuild v0.5.6 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking rustc_version v0.1.7
[INFO] [stderr]     Checking rand v0.4.3
[INFO] [stderr]     Checking fs2 v0.4.3
[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 walkdir v1.0.7
[INFO] [stderr]    Compiling backtrace-sys v0.1.24
[INFO] [stderr]    Compiling quote v0.6.8
[INFO] [stderr]     Checking tempdir v0.3.7
[INFO] [stderr]    Compiling syn v0.15.13
[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" "4a0d0e6a1fa53b2f232449fe05d98b2755927b5ed69e8ae3816950e4042a6c44", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4a0d0e6a1fa53b2f232449fe05d98b2755927b5ed69e8ae3816950e4042a6c44", kill_on_drop: false }`
[INFO] [stdout] 4a0d0e6a1fa53b2f232449fe05d98b2755927b5ed69e8ae3816950e4042a6c44
