[INFO] cloning repository https://github.com/Doimhneacht/circles-rs [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Doimhneacht/circles-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDoimhneacht%2Fcircles-rs", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDoimhneacht%2Fcircles-rs'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] c4988dee110be419fe2676732815f248a424ca16 [INFO] documenting Doimhneacht/circles-rs against 1.75.0 for beta-1.76-rustdoc-1 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDoimhneacht%2Fcircles-rs" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/Doimhneacht/circles-rs 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/Doimhneacht/circles-rs [INFO] finished tweaking git repo https://github.com/Doimhneacht/circles-rs [INFO] tweaked toml for git repo https://github.com/Doimhneacht/circles-rs written to /workspace/builds/worker-5-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/Doimhneacht/circles-rs 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 git repository `https://github.com/gfx-rs/gfx.git` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Updating git repository `https://github.com/msiglreith/comptr-rs.git` [INFO] [stderr] Updating git repository `https://github.com/msiglreith/winapi-rs.git` [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded draw_state v0.6.0 [INFO] [stderr] Downloaded wayland-client v0.8.7 [INFO] [stderr] Downloaded wayland-window v0.5.0 [INFO] [stderr] Downloaded gl_generator v0.5.3 [INFO] [stderr] Downloaded shared_library v0.1.5 [INFO] [stderr] Downloaded num-complex v0.1.38 [INFO] [stderr] Downloaded cocoa v0.5.2 [INFO] [stderr] Downloaded x11-dl v2.14.0 [INFO] [stderr] Downloaded wayland-kbd v0.8.0 [INFO] [stderr] Downloaded d3dcompiler-sys v0.2.0 [INFO] [stderr] Downloaded thread-id v3.1.0 [INFO] [stderr] Downloaded android_glue v0.2.2 [INFO] [stderr] Downloaded wayland-scanner v0.8.7 [INFO] [stderr] Downloaded core-graphics v0.4.2 [INFO] [stderr] Downloaded semver v0.2.3 [INFO] [stderr] Downloaded core-graphics v0.3.2 [INFO] [stderr] Downloaded num-rational v0.1.38 [INFO] [stderr] Downloaded gleam v0.2.32 [INFO] [stderr] Downloaded cocoa v0.3.3 [INFO] [stderr] Downloaded sdl2 v0.30.0 [INFO] [stderr] Downloaded glfw-sys v3.2.2 [INFO] [stderr] Downloaded cgmath v0.14.1 [INFO] [stderr] Downloaded glutin v0.8.1 [INFO] [stderr] Downloaded num-bigint v0.1.39 [INFO] [stderr] Downloaded bitflags v0.6.0 [INFO] [stderr] Downloaded cmake v0.1.24 [INFO] [stderr] Downloaded dxguid-sys v0.2.0 [INFO] [stderr] Downloaded sdl2-sys v0.30.0 [INFO] [stderr] Downloaded tempfile v2.1.5 [INFO] [stderr] Downloaded d3d11-sys v0.2.0 [INFO] [stderr] Downloaded cgl v0.1.5 [INFO] [stderr] Downloaded winit v0.6.4 [INFO] [stderr] Downloaded wayland-sys v0.8.7 [INFO] [stderr] Downloaded gleam v0.4.5 [INFO] [stderr] Downloaded glfw v0.14.0 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] b300ebe137448526eb1e810a9a42d055819ade5ec74f987c08e92da8a7b2623c [INFO] running `Command { std: "docker" "start" "-a" "b300ebe137448526eb1e810a9a42d055819ade5ec74f987c08e92da8a7b2623c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "b300ebe137448526eb1e810a9a42d055819ade5ec74f987c08e92da8a7b2623c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "b300ebe137448526eb1e810a9a42d055819ade5ec74f987c08e92da8a7b2623c", kill_on_drop: false }` [INFO] [stdout] b300ebe137448526eb1e810a9a42d055819ade5ec74f987c08e92da8a7b2623c [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] c637036eb96e251b73755739f32d5ccac07ffc71d40d7f6cd19fe0abda69f94a [INFO] running `Command { std: "docker" "start" "-a" "c637036eb96e251b73755739f32d5ccac07ffc71d40d7f6cd19fe0abda69f94a", kill_on_drop: false }` [INFO] [stderr] Checking libc v0.2.23 [INFO] [stderr] Compiling bitflags v0.7.0 [INFO] [stderr] Compiling siphasher v0.2.2 [INFO] [stderr] Checking lazy_static v0.2.8 [INFO] [stderr] Compiling serde v0.9.15 [INFO] [stderr] Compiling num-traits v0.1.39 [INFO] [stderr] Compiling itoa v0.3.1 [INFO] [stderr] Compiling xml-rs v0.3.6 [INFO] [stderr] Compiling dtoa v0.4.1 [INFO] [stderr] Compiling phf_shared v0.7.21 [INFO] [stderr] Compiling phf v0.7.21 [INFO] [stderr] Compiling log v0.3.8 [INFO] [stderr] Compiling rand v0.3.15 [INFO] [stderr] Compiling khronos_api v1.0.1 [INFO] [stderr] Compiling unicode-xid v0.0.4 [INFO] [stderr] Compiling quote v0.3.15 [INFO] [stderr] Checking bitflags v0.8.2 [INFO] [stderr] Compiling kernel32-sys v0.2.2 [INFO] [stderr] Checking num-integer v0.1.34 [INFO] [stderr] Checking rustc-serialize v0.3.24 [INFO] [stderr] Compiling gl_generator v0.5.3 [INFO] [stderr] Compiling wayland-scanner v0.8.7 [INFO] [stderr] Compiling either v1.1.0 [INFO] [stderr] Compiling semver v0.1.20 [INFO] [stderr] Compiling itertools v0.5.10 [INFO] [stderr] Compiling phf_generator v0.7.21 [INFO] [stderr] Compiling rustc_version v0.1.7 [INFO] [stderr] Compiling syn v0.10.8 [INFO] [stderr] Compiling phf_codegen v0.7.21 [INFO] [stderr] Compiling wayland-client v0.8.7 [INFO] [stderr] Compiling target_build_utils v0.3.1 [INFO] [stderr] Compiling tempfile v2.1.5 [INFO] [stderr] Compiling gfx_gl v0.3.1 [INFO] [stderr] Checking draw_state v0.7.1 [INFO] [stderr] Compiling pkg-config v0.3.9 [INFO] [stderr] Compiling gcc v0.3.50 [INFO] [stderr] Compiling x11-dl v2.14.0 [INFO] [stderr] Checking num-bigint v0.1.39 [INFO] [stderr] Compiling cmake v0.1.24 [INFO] [stderr] Compiling serde_json v0.9.10 [INFO] [stderr] Checking num-rational v0.1.38 [INFO] [stderr] Checking num-complex v0.1.38 [INFO] [stderr] Checking fs2 v0.2.5 [INFO] [stderr] Checking num-iter v0.1.33 [INFO] [stderr] Checking memmap v0.4.0 [INFO] [stderr] Compiling glfw-sys v3.2.2 [INFO] [stderr] Checking num v0.1.39 [INFO] [stderr] Checking shared_library v0.1.5 [INFO] [stderr] Compiling sdl2-sys v0.30.0 [INFO] [stderr] Checking byteorder v1.0.0 [INFO] [stderr] Compiling glutin v0.8.1 [INFO] [stderr] Checking memchr v1.0.1 [INFO] [stderr] Checking thread-id v3.1.0 [INFO] [stderr] Checking nom v1.2.4 [INFO] [stderr] Checking thread_local v0.3.3 [INFO] [stderr] Checking semver v0.2.3 [INFO] [stderr] Checking aho-corasick v0.6.3 [INFO] [stderr] Checking osmesa-sys v0.1.2 [INFO] [stderr] Checking enum_primitive v0.1.1 [INFO] [stderr] Compiling derivative v1.0.0 [INFO] [stderr] Compiling synom v0.11.3 [INFO] [stderr] Checking regex-syntax v0.4.1 [INFO] [stderr] Checking bitflags v0.6.0 [INFO] [stderr] Compiling syn v0.11.11 [INFO] [stderr] Checking draw_state v0.6.0 [INFO] [stderr] Checking sdl2 v0.30.0 [INFO] [stderr] Checking gfx_corell v0.1.1 (https://github.com/gfx-rs/gfx.git#a0d9b7ee) [INFO] [stderr] Checking regex v0.2.2 [INFO] [stderr] Checking approx v0.1.1 [INFO] [stderr] Checking cgmath v0.14.1 [INFO] [stderr] Checking env_logger v0.4.3 [INFO] [stderr] Compiling gfx_macros v0.2.1 (https://github.com/gfx-rs/gfx.git#a0d9b7ee) [INFO] [stderr] Checking gfx_core v0.7.1 (https://github.com/gfx-rs/gfx.git#a0d9b7ee) [INFO] [stderr] Checking glfw v0.14.0 [INFO] [stderr] Checking gfx_device_gl v0.14.0 (https://github.com/gfx-rs/gfx.git#a0d9b7ee) [INFO] [stderr] Checking gfx v0.16.0 (https://github.com/gfx-rs/gfx.git#a0d9b7ee) [INFO] [stderr] Checking gfx_window_glfw v0.15.0 (https://github.com/gfx-rs/gfx.git#a0d9b7ee) [INFO] [stderr] Checking gfx_window_sdl v0.7.0 (https://github.com/gfx-rs/gfx.git#a0d9b7ee) [INFO] [stderr] Compiling libloading v0.3.4 [INFO] [stderr] Checking dlib v0.3.1 [INFO] [stderr] Checking wayland-sys v0.8.7 [INFO] [stderr] Checking wayland-window v0.5.0 [INFO] [stderr] Checking wayland-kbd v0.8.0 [INFO] [stderr] Checking winit v0.6.4 [INFO] [stderr] Checking gfx_window_glutin v0.16.0 (https://github.com/gfx-rs/gfx.git#a0d9b7ee) [INFO] [stderr] Checking gfx_app v0.6.0 (https://github.com/gfx-rs/gfx.git#a0d9b7ee) [INFO] [stderr] Documenting circles-rs v0.1.0 (/opt/rustwide/workdir) [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 19.78s [INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: nom v1.2.4, rustc-serialize v0.3.24, syn v0.10.8 [INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 3` [INFO] [stderr] Generated /opt/rustwide/target/doc/circles_rs/index.html [INFO] running `Command { std: "docker" "inspect" "c637036eb96e251b73755739f32d5ccac07ffc71d40d7f6cd19fe0abda69f94a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "c637036eb96e251b73755739f32d5ccac07ffc71d40d7f6cd19fe0abda69f94a", kill_on_drop: false }` [INFO] [stdout] c637036eb96e251b73755739f32d5ccac07ffc71d40d7f6cd19fe0abda69f94a [INFO] documenting Doimhneacht/circles-rs against beta-2023-12-22 for beta-1.76-rustdoc-1 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDoimhneacht%2Fcircles-rs" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/Doimhneacht/circles-rs on toolchain beta-2023-12-22 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2023-12-22" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/Doimhneacht/circles-rs [INFO] finished tweaking git repo https://github.com/Doimhneacht/circles-rs [INFO] tweaked toml for git repo https://github.com/Doimhneacht/circles-rs written to /workspace/builds/worker-5-tc2/source/Cargo.toml [INFO] crate git repo https://github.com/Doimhneacht/circles-rs 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-2023-12-22" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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-2023-12-22" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 72f171403c9dfa2a6b68109f7821131d7b26ab4e4c152f103ff145a9621eebfd [INFO] running `Command { std: "docker" "start" "-a" "72f171403c9dfa2a6b68109f7821131d7b26ab4e4c152f103ff145a9621eebfd", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "72f171403c9dfa2a6b68109f7821131d7b26ab4e4c152f103ff145a9621eebfd", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "72f171403c9dfa2a6b68109f7821131d7b26ab4e4c152f103ff145a9621eebfd", kill_on_drop: false }` [INFO] [stdout] 72f171403c9dfa2a6b68109f7821131d7b26ab4e4c152f103ff145a9621eebfd [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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-2023-12-22" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] a5f11683e1f537067a583b3c5ae9a4a47aae7899818ec113f93f045c79925b43 [INFO] running `Command { std: "docker" "start" "-a" "a5f11683e1f537067a583b3c5ae9a4a47aae7899818ec113f93f045c79925b43", kill_on_drop: false }` [INFO] [stderr] Checking libc v0.2.23 [INFO] [stderr] Compiling bitflags v0.7.0 [INFO] [stderr] Compiling siphasher v0.2.2 [INFO] [stderr] Checking lazy_static v0.2.8 [INFO] [stderr] Compiling dtoa v0.4.1 [INFO] [stderr] Compiling itoa v0.3.1 [INFO] [stderr] Compiling serde v0.9.15 [INFO] [stderr] Compiling xml-rs v0.3.6 [INFO] [stderr] Compiling num-traits v0.1.39 [INFO] [stderr] Compiling phf_shared v0.7.21 [INFO] [stderr] Compiling khronos_api v1.0.1 [INFO] [stderr] Compiling phf v0.7.21 [INFO] [stderr] Checking rand v0.3.15 [INFO] [stderr] Compiling unicode-xid v0.0.4 [INFO] [stderr] Compiling log v0.3.8 [INFO] [stderr] Compiling quote v0.3.15 [INFO] [stderr] Checking bitflags v0.8.2 [INFO] [stderr] Checking num-integer v0.1.34 [INFO] [stderr] Compiling kernel32-sys v0.2.2 [INFO] [stderr] Compiling semver v0.1.20 [INFO] [stderr] Compiling phf_generator v0.7.21 [INFO] [stderr] Compiling phf_codegen v0.7.21 [INFO] [stderr] Compiling gl_generator v0.5.3 [INFO] [stderr] Compiling wayland-scanner v0.8.7 [INFO] [stderr] Compiling either v1.1.0 [INFO] [stderr] Checking rustc-serialize v0.3.24 [INFO] [stderr] Compiling target_build_utils v0.3.1 [INFO] [stderr] Compiling itertools v0.5.10 [INFO] [stderr] Compiling rustc_version v0.1.7 [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/0e09125c6c3c2fd70d7de961bcf0e51575235fad/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] Compiling syn v0.10.8 [INFO] [stderr] Compiling tempfile v2.1.5 [INFO] [stderr] Compiling wayland-client v0.8.7 [INFO] [stderr] Compiling gfx_gl v0.3.1 [INFO] [stderr] Checking draw_state v0.7.1 [INFO] [stderr] Compiling pkg-config v0.3.9 [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" "a5f11683e1f537067a583b3c5ae9a4a47aae7899818ec113f93f045c79925b43", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "a5f11683e1f537067a583b3c5ae9a4a47aae7899818ec113f93f045c79925b43", kill_on_drop: false }` [INFO] [stdout] a5f11683e1f537067a583b3c5ae9a4a47aae7899818ec113f93f045c79925b43