[INFO] cloning repository https://github.com/konyonyo/rust-study [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/konyonyo/rust-study" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkonyonyo%2Frust-study", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkonyonyo%2Frust-study'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] f7a67bb0b1f292c2bee04b8f26f21341b3c50482 [INFO] testing konyonyo/rust-study against 1.75.0 for beta-1.76-3 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkonyonyo%2Frust-study" "/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/konyonyo/rust-study 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/konyonyo/rust-study [INFO] finished tweaking git repo https://github.com/konyonyo/rust-study [INFO] tweaked toml for git repo https://github.com/konyonyo/rust-study written to /workspace/builds/worker-1-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/konyonyo/rust-study 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] Downloading crates ... [INFO] [stderr] Downloaded jpeg-decoder v0.1.15 [INFO] [stderr] Downloaded nodrop v0.1.12 [INFO] [stderr] Downloaded cfg-if v0.1.6 [INFO] [stderr] Downloaded lazy_static v1.1.0 [INFO] [stderr] Downloaded byteorder v1.2.6 [INFO] [stderr] Downloaded crossbeam-utils v0.2.2 [INFO] [stderr] Downloaded deflate v0.7.19 [INFO] [stderr] Downloaded rayon v1.0.2 [INFO] [stderr] Downloaded crossbeam-deque v0.2.0 [INFO] [stderr] Downloaded num_cpus v1.8.0 [INFO] [stderr] Downloaded either v1.5.0 [INFO] [stderr] Downloaded arrayvec v0.4.7 [INFO] [stderr] Downloaded crossbeam-epoch v0.3.1 [INFO] [stderr] Downloaded rayon-core v1.4.1 [INFO] [stderr] Downloaded rand v0.4.3 [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] f0e515a383329f12ab28f3a906f974ad02637f68a5d82d792dc60e0e86af29fc [INFO] running `Command { std: "docker" "start" "-a" "f0e515a383329f12ab28f3a906f974ad02637f68a5d82d792dc60e0e86af29fc", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "f0e515a383329f12ab28f3a906f974ad02637f68a5d82d792dc60e0e86af29fc", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "f0e515a383329f12ab28f3a906f974ad02637f68a5d82d792dc60e0e86af29fc", kill_on_drop: false }` [INFO] [stdout] f0e515a383329f12ab28f3a906f974ad02637f68a5d82d792dc60e0e86af29fc [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" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 33b223436e7a6ed80211323169077017af40b99d557d4214d67122413f96ba9d [INFO] running `Command { std: "docker" "start" "-a" "33b223436e7a6ed80211323169077017af40b99d557d4214d67122413f96ba9d", kill_on_drop: false }` [INFO] [stderr] Compiling num-traits v0.2.6 [INFO] [stderr] Compiling version_check v0.1.5 [INFO] [stderr] Compiling libc v0.2.43 [INFO] [stderr] Compiling num-integer v0.1.39 [INFO] [stderr] Compiling nodrop v0.1.12 [INFO] [stderr] Compiling cfg-if v0.1.6 [INFO] [stderr] Compiling scopeguard v0.3.3 [INFO] [stderr] Compiling memoffset v0.2.1 [INFO] [stderr] Compiling rayon-core v1.4.1 [INFO] [stderr] Compiling num-iter v0.1.37 [INFO] [stderr] Compiling rayon v1.0.2 [INFO] [stderr] Compiling byteorder v1.2.6 [INFO] [stderr] Compiling either v1.5.0 [INFO] [stderr] Compiling adler32 v1.0.3 [INFO] [stderr] Compiling inflate v0.2.0 [INFO] [stderr] Compiling bitflags v0.7.0 [INFO] [stderr] Compiling crossbeam-utils v0.2.2 [INFO] [stderr] Compiling arrayvec v0.4.7 [INFO] [stderr] Compiling color_quant v1.0.1 [INFO] [stderr] Compiling lzw v0.10.0 [INFO] [stderr] Compiling scoped_threadpool v0.1.9 [INFO] [stderr] Compiling crossbeam v0.2.12 [INFO] [stderr] Compiling lazy_static v1.1.0 [INFO] [stderr] Compiling deflate v0.7.19 [INFO] [stderr] Compiling gif v0.9.2 [INFO] [stderr] Compiling num_cpus v1.8.0 [INFO] [stderr] Compiling rand v0.4.3 [INFO] [stderr] Compiling crossbeam-epoch v0.3.1 [INFO] [stderr] Compiling crossbeam-deque v0.2.0 [INFO] [stderr] Compiling num-traits v0.1.43 [INFO] [stderr] Compiling num-complex v0.1.43 [INFO] [stderr] Compiling enum_primitive v0.1.1 [INFO] [stderr] Compiling num-bigint v0.1.44 [INFO] [stderr] Compiling png v0.7.0 [INFO] [stderr] Compiling num-rational v0.1.42 [INFO] [stderr] Compiling num v0.1.42 [INFO] [stderr] Compiling jpeg-decoder v0.1.15 [INFO] [stderr] Compiling image v0.13.0 [INFO] [stderr] Compiling mandelbrot v0.1.0 (/opt/rustwide/workdir) [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 15.85s [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] running `Command { std: "docker" "inspect" "33b223436e7a6ed80211323169077017af40b99d557d4214d67122413f96ba9d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "33b223436e7a6ed80211323169077017af40b99d557d4214d67122413f96ba9d", kill_on_drop: false }` [INFO] [stdout] 33b223436e7a6ed80211323169077017af40b99d557d4214d67122413f96ba9d [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" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 9c29ce6c6ad4ea59e6c6ffa9a2f7b7211e7ef6d0b56c8a1072b212dfbde1a972 [INFO] running `Command { std: "docker" "start" "-a" "9c29ce6c6ad4ea59e6c6ffa9a2f7b7211e7ef6d0b56c8a1072b212dfbde1a972", kill_on_drop: false }` [INFO] [stderr] Compiling mandelbrot v0.1.0 (/opt/rustwide/workdir) [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.58s [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] running `Command { std: "docker" "inspect" "9c29ce6c6ad4ea59e6c6ffa9a2f7b7211e7ef6d0b56c8a1072b212dfbde1a972", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "9c29ce6c6ad4ea59e6c6ffa9a2f7b7211e7ef6d0b56c8a1072b212dfbde1a972", kill_on_drop: false }` [INFO] [stdout] 9c29ce6c6ad4ea59e6c6ffa9a2f7b7211e7ef6d0b56c8a1072b212dfbde1a972 [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" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] f47a925cc17790bf4de041e6d987917518dc281bfa5cbc1c9d18a4fe95f6cd91 [INFO] running `Command { std: "docker" "start" "-a" "f47a925cc17790bf4de041e6d987917518dc281bfa5cbc1c9d18a4fe95f6cd91", kill_on_drop: false }` [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.04s [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] Running unittests src/main.rs (/opt/rustwide/target/debug/deps/mandelbrot-43fceb70bf9aa810) [INFO] [stdout] [INFO] [stdout] running 0 tests [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "f47a925cc17790bf4de041e6d987917518dc281bfa5cbc1c9d18a4fe95f6cd91", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "f47a925cc17790bf4de041e6d987917518dc281bfa5cbc1c9d18a4fe95f6cd91", kill_on_drop: false }` [INFO] [stdout] f47a925cc17790bf4de041e6d987917518dc281bfa5cbc1c9d18a4fe95f6cd91 [INFO] testing konyonyo/rust-study against beta-2024-01-09 for beta-1.76-3 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkonyonyo%2Frust-study" "/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/konyonyo/rust-study on toolchain beta-2024-01-09 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2024-01-09" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/konyonyo/rust-study [INFO] finished tweaking git repo https://github.com/konyonyo/rust-study [INFO] tweaked toml for git repo https://github.com/konyonyo/rust-study written to /workspace/builds/worker-1-tc2/source/Cargo.toml [INFO] crate git repo https://github.com/konyonyo/rust-study 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-2024-01-09" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [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-2024-01-09" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] f182167574bac26b180cd0790b0aa7b42139dcc8e92968eccc7ecfa94879f890 [INFO] running `Command { std: "docker" "start" "-a" "f182167574bac26b180cd0790b0aa7b42139dcc8e92968eccc7ecfa94879f890", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "f182167574bac26b180cd0790b0aa7b42139dcc8e92968eccc7ecfa94879f890", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "f182167574bac26b180cd0790b0aa7b42139dcc8e92968eccc7ecfa94879f890", kill_on_drop: false }` [INFO] [stdout] f182167574bac26b180cd0790b0aa7b42139dcc8e92968eccc7ecfa94879f890 [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-2024-01-09" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] e66b70e5c90de7cd001942c5d8d8215b26b824267621c73ab9afda84c821f6dc [INFO] running `Command { std: "docker" "start" "-a" "e66b70e5c90de7cd001942c5d8d8215b26b824267621c73ab9afda84c821f6dc", kill_on_drop: false }` [INFO] [stderr] Compiling num-traits v0.2.6 [INFO] [stderr] Compiling version_check v0.1.5 [INFO] [stderr] Compiling libc v0.2.43 [INFO] [stderr] Compiling num-integer v0.1.39 [INFO] [stderr] Compiling nodrop v0.1.12 [INFO] [stderr] Compiling cfg-if v0.1.6 [INFO] [stderr] Compiling memoffset v0.2.1 [INFO] [stderr] Compiling scopeguard v0.3.3 [INFO] [stderr] Compiling rayon-core v1.4.1 [INFO] [stderr] Compiling num-iter v0.1.37 [INFO] [stderr] Compiling rustc-serialize v0.3.24 [INFO] [stderr] Compiling byteorder v1.2.6 [INFO] [stderr] Compiling rayon v1.0.2 [INFO] [stderr] Compiling either v1.5.0 [INFO] [stderr] Compiling adler32 v1.0.3 [INFO] [stderr] Compiling bitflags v0.7.0 [INFO] [stderr] Compiling crossbeam-utils v0.2.2 [INFO] [stderr] Compiling arrayvec v0.4.7 [INFO] [stderr] Compiling lzw v0.10.0 [INFO] [stderr] Compiling inflate v0.2.0 [INFO] [stderr] Compiling color_quant v1.0.1 [INFO] [stderr] Compiling scoped_threadpool v0.1.9 [INFO] [stderr] Compiling crossbeam v0.2.12 [INFO] [stderr] Compiling deflate v0.7.19 [INFO] [stderr] Compiling gif v0.9.2 [INFO] [stderr] Compiling lazy_static v1.1.0 [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/650745ceb2ae60e04f8cd7bfb671fc37239533e4/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 rand v0.4.3 [INFO] [stderr] Compiling num_cpus v1.8.0 [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" "e66b70e5c90de7cd001942c5d8d8215b26b824267621c73ab9afda84c821f6dc", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "e66b70e5c90de7cd001942c5d8d8215b26b824267621c73ab9afda84c821f6dc", kill_on_drop: false }` [INFO] [stdout] e66b70e5c90de7cd001942c5d8d8215b26b824267621c73ab9afda84c821f6dc