[INFO] fetching crate gcookie 0.0.3... [INFO] documenting gcookie-0.0.3 against 1.75.0 for beta-1.76-rustdoc-2 [INFO] extracting crate gcookie 0.0.3 into /workspace/builds/worker-6-tc1/source [INFO] validating manifest of crates.io crate gcookie 0.0.3 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 crates.io crate gcookie 0.0.3 [INFO] finished tweaking crates.io crate gcookie 0.0.3 [INFO] tweaked toml for crates.io crate gcookie 0.0.3 written to /workspace/builds/worker-6-tc1/source/Cargo.toml [INFO] crate crates.io crate gcookie 0.0.3 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] Blocking waiting for file lock on package cache [INFO] [stderr] Updating crates.io index [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded tinyvec v1.6.0 [INFO] [stderr] Downloaded once_cell v1.13.0 [INFO] [stderr] Downloaded redox_users v0.4.3 [INFO] [stderr] Downloaded ghash v0.4.4 [INFO] [stderr] Downloaded thiserror v1.0.31 [INFO] [stderr] Downloaded thiserror-impl v1.0.31 [INFO] [stderr] Downloaded pkg-config v0.3.25 [INFO] [stderr] Downloaded dirs-sys v0.3.7 [INFO] [stderr] Downloaded redox_syscall v0.2.13 [INFO] [stderr] Downloaded fallible-streaming-iterator v0.1.9 [INFO] [stderr] Downloaded clap_lex v0.2.4 [INFO] [stderr] Downloaded gcc v0.3.55 [INFO] [stderr] Downloaded unicode-bidi v0.3.8 [INFO] [stderr] Downloaded indexmap v1.9.1 [INFO] [stderr] Downloaded unicode-normalization v0.1.21 [INFO] [stderr] Downloaded aes-gcm v0.9.4 [INFO] [stderr] Downloaded clap v3.2.13 [INFO] [stderr] Downloaded libc v0.2.126 [INFO] [stderr] Downloaded rust-crypto v0.2.36 [INFO] [stderr] Downloaded windows_i686_gnu v0.38.0 [INFO] [stderr] Downloaded libsqlite3-sys v0.25.0 [INFO] [stderr] Downloaded windows_x86_64_gnu v0.38.0 [INFO] [stderr] Downloaded windows_x86_64_msvc v0.38.0 [INFO] [stderr] Downloaded windows_aarch64_msvc v0.38.0 [INFO] [stderr] Downloaded windows_i686_msvc v0.38.0 [INFO] [stderr] Downloaded windows v0.38.0 [INFO] [stderr] Downloaded hashbrown v0.12.3 [INFO] [stderr] Downloaded serde_json v1.0.82 [INFO] [stderr] Downloaded serde v1.0.139 [INFO] [stderr] Downloaded rusqlite v0.28.0 [INFO] [stderr] Downloaded syn v1.0.98 [INFO] [stderr] Downloaded ahash v0.7.6 [INFO] [stderr] Downloaded ryu v1.0.10 [INFO] [stderr] Downloaded smallvec v1.9.0 [INFO] [stderr] Downloaded proc-macro2 v1.0.40 [INFO] [stderr] Downloaded quote v1.0.20 [INFO] [stderr] Downloaded hashlink v0.8.0 [INFO] [stderr] Downloaded time v0.1.44 [INFO] [stderr] Downloaded fallible-iterator v0.2.0 [INFO] [stderr] Downloaded itoa v1.0.2 [INFO] [stderr] Downloaded universal-hash v0.4.1 [INFO] [stderr] Downloaded unicode-ident v1.0.2 [INFO] [stderr] Downloaded getrandom v0.2.7 [INFO] [stderr] Downloaded dirs v4.0.0 [INFO] [stderr] Downloaded polyval v0.5.3 [INFO] [stderr] Downloaded aead v0.4.3 [INFO] [stderr] Downloaded os_str_bytes v6.2.0 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 07efa09bc7ceeaea5e353f903a4354537636dea5aa15447dcabc0edc5540f1bd [INFO] running `Command { std: "docker" "start" "-a" "07efa09bc7ceeaea5e353f903a4354537636dea5aa15447dcabc0edc5540f1bd", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "07efa09bc7ceeaea5e353f903a4354537636dea5aa15447dcabc0edc5540f1bd", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "07efa09bc7ceeaea5e353f903a4354537636dea5aa15447dcabc0edc5540f1bd", kill_on_drop: false }` [INFO] [stdout] 07efa09bc7ceeaea5e353f903a4354537636dea5aa15447dcabc0edc5540f1bd [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] aa40e7a69e589ff41ac710350e85925e7d34b0dd98aa935a3827f7223e214764 [INFO] running `Command { std: "docker" "start" "-a" "aa40e7a69e589ff41ac710350e85925e7d34b0dd98aa935a3827f7223e214764", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.126 [INFO] [stderr] Compiling version_check v0.9.4 [INFO] [stderr] Checking cfg-if v1.0.0 [INFO] [stderr] Checking once_cell v1.13.0 [INFO] [stderr] Compiling pkg-config v0.3.25 [INFO] [stderr] Compiling autocfg v1.1.0 [INFO] [stderr] Checking tinyvec_macros v0.1.0 [INFO] [stderr] Compiling vcpkg v0.2.15 [INFO] [stderr] Compiling cc v1.0.73 [INFO] [stderr] Checking tinyvec v1.6.0 [INFO] [stderr] Compiling serde v1.0.139 [INFO] [stderr] Compiling ahash v0.7.6 [INFO] [stderr] Compiling indexmap v1.9.1 [INFO] [stderr] Compiling gcc v0.3.55 [INFO] [stderr] Checking matches v0.1.9 [INFO] [stderr] Checking percent-encoding v2.1.0 [INFO] [stderr] Checking os_str_bytes v6.2.0 [INFO] [stderr] Checking unicode-bidi v0.3.8 [INFO] [stderr] Checking bitflags v1.3.2 [INFO] [stderr] Checking unicode-normalization v0.1.21 [INFO] [stderr] Compiling serde_json v1.0.82 [INFO] [stderr] Checking clap_lex v0.2.4 [INFO] [stderr] Checking form_urlencoded v1.0.1 [INFO] [stderr] Checking fallible-streaming-iterator v0.1.9 [INFO] [stderr] Compiling libsqlite3-sys v0.25.0 [INFO] [stderr] Checking smallvec v1.9.0 [INFO] [stderr] Compiling rust-crypto v0.2.36 [INFO] [stderr] Checking getrandom v0.2.7 [INFO] [stderr] Checking rand v0.4.6 [INFO] [stderr] Checking atty v0.2.14 [INFO] [stderr] Checking dirs-sys v0.3.7 [INFO] [stderr] Checking time v0.1.44 [INFO] [stderr] Checking textwrap v0.15.0 [INFO] [stderr] Checking itoa v1.0.2 [INFO] [stderr] Checking idna v0.2.3 [INFO] [stderr] Checking hashbrown v0.12.3 [INFO] [stderr] Checking termcolor v1.1.3 [INFO] [stderr] Checking strsim v0.10.0 [INFO] [stderr] Checking fallible-iterator v0.2.0 [INFO] [stderr] Checking rustc-serialize v0.3.24 [INFO] [stderr] Checking ryu v1.0.10 [INFO] [stderr] Checking rand v0.3.23 [INFO] [stderr] Checking dirs v4.0.0 [INFO] [stderr] Checking base64 v0.13.0 [INFO] [stderr] Checking url v2.2.2 [INFO] [stderr] Checking hashlink v0.8.0 [INFO] [stderr] Checking clap v3.2.13 [INFO] [stderr] Checking rusqlite v0.28.0 [INFO] [stderr] Documenting gcookie v0.0.3 (/opt/rustwide/workdir) [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 29.73s [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/gcookie/index.html [INFO] running `Command { std: "docker" "inspect" "aa40e7a69e589ff41ac710350e85925e7d34b0dd98aa935a3827f7223e214764", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "aa40e7a69e589ff41ac710350e85925e7d34b0dd98aa935a3827f7223e214764", kill_on_drop: false }` [INFO] [stdout] aa40e7a69e589ff41ac710350e85925e7d34b0dd98aa935a3827f7223e214764 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 3d24fa6fcf62ae58667d63a69a81d7eff8f408e5eca9988bd650299b60f9950b [INFO] running `Command { std: "docker" "start" "-a" "3d24fa6fcf62ae58667d63a69a81d7eff8f408e5eca9988bd650299b60f9950b", kill_on_drop: false }` [INFO] [stderr] Documenting gcookie v0.0.3 (/opt/rustwide/workdir) [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.77s [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/gcookie/index.html [INFO] running `Command { std: "docker" "inspect" "3d24fa6fcf62ae58667d63a69a81d7eff8f408e5eca9988bd650299b60f9950b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "3d24fa6fcf62ae58667d63a69a81d7eff8f408e5eca9988bd650299b60f9950b", kill_on_drop: false }` [INFO] [stdout] 3d24fa6fcf62ae58667d63a69a81d7eff8f408e5eca9988bd650299b60f9950b [INFO] documenting gcookie-0.0.3 against beta-2024-01-11 for beta-1.76-rustdoc-2 [INFO] extracting crate gcookie 0.0.3 into /workspace/builds/worker-6-tc2/source [INFO] validating manifest of crates.io crate gcookie 0.0.3 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 crates.io crate gcookie 0.0.3 [INFO] finished tweaking crates.io crate gcookie 0.0.3 [INFO] tweaked toml for crates.io crate gcookie 0.0.3 written to /workspace/builds/worker-6-tc2/source/Cargo.toml [INFO] crate crates.io crate gcookie 0.0.3 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-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 23b8aeafa1acd21cd3c8d998979e66d3dc002e2ff1adf91587f229be04634145 [INFO] running `Command { std: "docker" "start" "-a" "23b8aeafa1acd21cd3c8d998979e66d3dc002e2ff1adf91587f229be04634145", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "23b8aeafa1acd21cd3c8d998979e66d3dc002e2ff1adf91587f229be04634145", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "23b8aeafa1acd21cd3c8d998979e66d3dc002e2ff1adf91587f229be04634145", kill_on_drop: false }` [INFO] [stdout] 23b8aeafa1acd21cd3c8d998979e66d3dc002e2ff1adf91587f229be04634145 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 63cb0deb2e068e97b465228fbd29a191d25c782e820e19782e5b93d76d112ed5 [INFO] running `Command { std: "docker" "start" "-a" "63cb0deb2e068e97b465228fbd29a191d25c782e820e19782e5b93d76d112ed5", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.126 [INFO] [stderr] Compiling version_check v0.9.4 [INFO] [stderr] Checking cfg-if v1.0.0 [INFO] [stderr] Checking once_cell v1.13.0 [INFO] [stderr] Checking tinyvec_macros v0.1.0 [INFO] [stderr] Compiling autocfg v1.1.0 [INFO] [stderr] Compiling pkg-config v0.3.25 [INFO] [stderr] Compiling vcpkg v0.2.15 [INFO] [stderr] Compiling cc v1.0.73 [INFO] [stderr] Checking tinyvec v1.6.0 [INFO] [stderr] Checking matches v0.1.9 [INFO] [stderr] Compiling gcc v0.3.55 [INFO] [stderr] Compiling ahash v0.7.6 [INFO] [stderr] Compiling indexmap v1.9.1 [INFO] [stderr] Compiling serde v1.0.139 [INFO] [stderr] Checking bitflags v1.3.2 [INFO] [stderr] Checking os_str_bytes v6.2.0 [INFO] [stderr] Compiling serde_json v1.0.82 [INFO] [stderr] Checking percent-encoding v2.1.0 [INFO] [stderr] Compiling rust-crypto v0.2.36 [INFO] [stderr] Checking unicode-bidi v0.3.8 [INFO] [stderr] Checking form_urlencoded v1.0.1 [INFO] [stderr] Checking clap_lex v0.2.4 [INFO] [stderr] Checking unicode-normalization v0.1.21 [INFO] [stderr] Checking rustc-serialize v0.3.24 [INFO] [stderr] Checking strsim v0.10.0 [INFO] [stderr] Checking ryu v1.0.10 [INFO] [stderr] Compiling libsqlite3-sys v0.25.0 [INFO] [stderr] Checking getrandom v0.2.7 [INFO] [stderr] Checking rand v0.4.6 [INFO] [stderr] Checking atty v0.2.14 [INFO] [stderr] Checking dirs-sys v0.3.7 [INFO] [stderr] Checking time v0.1.44 [INFO] [stderr] Checking itoa v1.0.2 [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: &mut D) -> Result, 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 hashbrown v0.12.3 [INFO] [stderr] Checking termcolor v1.1.3 [INFO] [stderr] Checking idna v0.2.3 [INFO] [stderr] Checking fallible-iterator v0.2.0 [INFO] [stderr] Checking textwrap v0.15.0 [INFO] [stderr] Checking smallvec v1.9.0 [INFO] [stderr] Checking fallible-streaming-iterator v0.1.9 [INFO] [stderr] Checking rand v0.3.23 [INFO] [stderr] Checking dirs v4.0.0 [INFO] [stderr] Checking base64 v0.13.0 [INFO] [stderr] Checking url v2.2.2 [INFO] [stderr] Checking hashlink v0.8.0 [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" "63cb0deb2e068e97b465228fbd29a191d25c782e820e19782e5b93d76d112ed5", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "63cb0deb2e068e97b465228fbd29a191d25c782e820e19782e5b93d76d112ed5", kill_on_drop: false }` [INFO] [stdout] 63cb0deb2e068e97b465228fbd29a191d25c782e820e19782e5b93d76d112ed5