[INFO] fetching crate alt_cargo_metadata 0.9.1... [INFO] testing alt_cargo_metadata-0.9.1 against 1.59.0 for beta-1.60-1 [INFO] extracting crate alt_cargo_metadata 0.9.1 into /workspace/builds/worker-10/source [INFO] validating manifest of crates.io crate alt_cargo_metadata 0.9.1 on toolchain 1.59.0 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking crates.io crate alt_cargo_metadata 0.9.1 [INFO] finished tweaking crates.io crate alt_cargo_metadata 0.9.1 [INFO] tweaked toml for crates.io crate alt_cargo_metadata 0.9.1 written to /workspace/builds/worker-10/source/Cargo.toml [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }` [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 57f43f5553e2c13c68e33ac7471c7cf7638b0d7944dd19de79387d9da0ab3b80 [INFO] running `Command { std: "docker" "start" "-a" "57f43f5553e2c13c68e33ac7471c7cf7638b0d7944dd19de79387d9da0ab3b80", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "57f43f5553e2c13c68e33ac7471c7cf7638b0d7944dd19de79387d9da0ab3b80", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "57f43f5553e2c13c68e33ac7471c7cf7638b0d7944dd19de79387d9da0ab3b80", kill_on_drop: false }` [INFO] [stdout] 57f43f5553e2c13c68e33ac7471c7cf7638b0d7944dd19de79387d9da0ab3b80 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 325ed0a368a355865c3fd13c9a555fa333d2ac9d4a3f5470b8b17d2dcc06dbe4 [INFO] running `Command { std: "docker" "start" "-a" "325ed0a368a355865c3fd13c9a555fa333d2ac9d4a3f5470b8b17d2dcc06dbe4", kill_on_drop: false }` [INFO] [stderr] Compiling alt_serde v1.0.119 [INFO] [stderr] Compiling syn v1.0.86 [INFO] [stderr] Compiling alt_serde_json v1.0.61 [INFO] [stderr] Compiling alt_serde_derive v1.0.119 [INFO] [stderr] Compiling itoa v0.4.8 [INFO] [stderr] Compiling alt_semver v0.9.0 [INFO] [stderr] Compiling alt_cargo_metadata v0.9.1 (/opt/rustwide/workdir) [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/errors.rs:96:34 [INFO] [stdout] | [INFO] [stdout] 96 | fn source(&self) -> Option<&(::std::error::Error + 'static)> { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(bare_trait_objects)]` on by default [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 [INFO] [stdout] help: use `dyn` [INFO] [stdout] | [INFO] [stdout] 96 | fn source(&self) -> Option<&(dyn (::std::error::Error + 'static))> { [INFO] [stdout] | +++++ + [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 11.77s [INFO] running `Command { std: "docker" "inspect" "325ed0a368a355865c3fd13c9a555fa333d2ac9d4a3f5470b8b17d2dcc06dbe4", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "325ed0a368a355865c3fd13c9a555fa333d2ac9d4a3f5470b8b17d2dcc06dbe4", kill_on_drop: false }` [INFO] [stdout] 325ed0a368a355865c3fd13c9a555fa333d2ac9d4a3f5470b8b17d2dcc06dbe4 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 54c9393ba5c4ed4e4ea04fd8784c7cc50fa6129a9bbc014ea5c0cf32663c406e [INFO] running `Command { std: "docker" "start" "-a" "54c9393ba5c4ed4e4ea04fd8784c7cc50fa6129a9bbc014ea5c0cf32663c406e", kill_on_drop: false }` [INFO] [stderr] Compiling syn v0.15.44 [INFO] [stderr] Compiling unicode-width v0.1.9 [INFO] [stderr] Compiling regex-syntax v0.6.25 [INFO] [stderr] Compiling vec_map v0.8.2 [INFO] [stderr] Compiling strsim v0.8.0 [INFO] [stderr] Compiling ansi_term v0.12.1 [INFO] [stderr] Compiling strsim v0.10.0 [INFO] [stderr] Compiling atty v0.2.14 [INFO] [stderr] Compiling serde_derive v1.0.136 [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/errors.rs:96:34 [INFO] [stdout] | [INFO] [stdout] 96 | fn source(&self) -> Option<&(::std::error::Error + 'static)> { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(bare_trait_objects)]` on by default [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 [INFO] [stdout] help: use `dyn` [INFO] [stdout] | [INFO] [stdout] 96 | fn source(&self) -> Option<&(dyn (::std::error::Error + 'static))> { [INFO] [stdout] | +++++ + [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Compiling textwrap v0.11.0 [INFO] [stderr] Compiling clap v2.34.0 [INFO] [stderr] Compiling regex v1.5.4 [INFO] [stderr] Compiling structopt-derive v0.2.18 [INFO] [stderr] Compiling structopt v0.2.18 [INFO] [stderr] Compiling serde v1.0.136 [INFO] [stderr] Compiling docopt v1.1.1 [INFO] [stderr] Compiling alt_cargo_metadata v0.9.1 (/opt/rustwide/workdir) [INFO] [stdout] error[E0463]: can't find crate for `cargo_metadata` [INFO] [stdout] --> tests/test_samples.rs:1:1 [INFO] [stdout] | [INFO] [stdout] 1 | extern crate cargo_metadata; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ can't find crate [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0463]: can't find crate for `cargo_metadata` [INFO] [stdout] --> tests/selftest.rs:1:1 [INFO] [stdout] | [INFO] [stdout] 1 | extern crate cargo_metadata; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ can't find crate [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `DependencyKind` [INFO] [stdout] --> tests/test_samples.rs:81:26 [INFO] [stdout] | [INFO] [stdout] 81 | assert_eq!(dep.kind, DependencyKind::Normal); [INFO] [stdout] | ^^^^^^^^^^^^^^ use of undeclared type `DependencyKind` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `MetadataCommand` [INFO] [stdout] --> tests/test_samples.rs:158:16 [INFO] [stdout] | [INFO] [stdout] 158 | let meta = MetadataCommand::new() [INFO] [stdout] | ^^^^^^^^^^^^^^^ use of undeclared type `MetadataCommand` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `DependencyKind` [INFO] [stdout] --> tests/test_samples.rs:203:31 [INFO] [stdout] | [INFO] [stdout] 203 | assert_eq!(path_dep.kind, DependencyKind::Normal); [INFO] [stdout] | ^^^^^^^^^^^^^^ use of undeclared type `DependencyKind` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `DependencyKind` [INFO] [stdout] --> tests/test_samples.rs:231:29 [INFO] [stdout] | [INFO] [stdout] 231 | assert_eq!(devdep.kind, DependencyKind::Development); [INFO] [stdout] | ^^^^^^^^^^^^^^ use of undeclared type `DependencyKind` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `DependencyKind` [INFO] [stdout] --> tests/test_samples.rs:234:27 [INFO] [stdout] | [INFO] [stdout] 234 | assert_eq!(bdep.kind, DependencyKind::Build); [INFO] [stdout] | ^^^^^^^^^^^^^^ use of undeclared type `DependencyKind` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `DependencyKind` [INFO] [stdout] --> tests/test_samples.rs:365:27 [INFO] [stdout] | [INFO] [stdout] 365 | assert_eq!(kind.kind, DependencyKind::Normal); [INFO] [stdout] | ^^^^^^^^^^^^^^ use of undeclared type `DependencyKind` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `DependencyKind` [INFO] [stdout] --> tests/test_samples.rs:379:27 [INFO] [stdout] | [INFO] [stdout] 379 | assert_eq!(kind.kind, DependencyKind::Build); [INFO] [stdout] | ^^^^^^^^^^^^^^ use of undeclared type `DependencyKind` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `DependencyKind` [INFO] [stdout] --> tests/test_samples.rs:385:27 [INFO] [stdout] | [INFO] [stdout] 385 | assert_eq!(kind.kind, DependencyKind::Development); [INFO] [stdout] | ^^^^^^^^^^^^^^ use of undeclared type `DependencyKind` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `DependencyKind` [INFO] [stdout] --> tests/test_samples.rs:391:27 [INFO] [stdout] | [INFO] [stdout] 391 | assert_eq!(kind.kind, DependencyKind::Normal); [INFO] [stdout] | ^^^^^^^^^^^^^^ use of undeclared type `DependencyKind` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `MetadataCommand` [INFO] [stdout] --> tests/test_samples.rs:469:16 [INFO] [stdout] | [INFO] [stdout] 469 | let meta = MetadataCommand::new() [INFO] [stdout] | ^^^^^^^^^^^^^^^ use of undeclared type `MetadataCommand` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0412]: cannot find type `Metadata` in this scope [INFO] [stdout] --> tests/test_samples.rs:66:15 [INFO] [stdout] | [INFO] [stdout] 66 | let meta: Metadata = serde_json::from_str(json).unwrap(); [INFO] [stdout] | ^^^^^^^^ not found in this scope [INFO] [stdout] | [INFO] [stdout] help: consider importing this struct [INFO] [stdout] | [INFO] [stdout] 6 | use std::fs::Metadata; [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0412]: cannot find type `Metadata` in this scope [INFO] [stdout] --> tests/test_samples.rs:458:15 [INFO] [stdout] | [INFO] [stdout] 458 | let meta: Metadata = serde_json::from_str(json).unwrap(); [INFO] [stdout] | ^^^^^^^^ not found in this scope [INFO] [stdout] | [INFO] [stdout] help: consider importing this struct [INFO] [stdout] | [INFO] [stdout] 6 | use std::fs::Metadata; [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `MetadataCommand` [INFO] [stdout] --> tests/selftest.rs:23:20 [INFO] [stdout] | [INFO] [stdout] 23 | let metadata = MetadataCommand::new().no_deps().exec().unwrap(); [INFO] [stdout] | ^^^^^^^^^^^^^^^ use of undeclared type `MetadataCommand` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `MetadataCommand` [INFO] [stdout] --> tests/selftest.rs:66:13 [INFO] [stdout] | [INFO] [stdout] 66 | let _ = MetadataCommand::new() [INFO] [stdout] | ^^^^^^^^^^^^^^^ use of undeclared type `MetadataCommand` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `MetadataCommand` [INFO] [stdout] --> tests/selftest.rs:70:13 [INFO] [stdout] | [INFO] [stdout] 70 | let _ = MetadataCommand::new() [INFO] [stdout] | ^^^^^^^^^^^^^^^ use of undeclared type `MetadataCommand` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `MetadataCommand` [INFO] [stdout] --> tests/selftest.rs:74:13 [INFO] [stdout] | [INFO] [stdout] 74 | let _ = MetadataCommand::new() [INFO] [stdout] | ^^^^^^^^^^^^^^^ use of undeclared type `MetadataCommand` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `MetadataCommand` [INFO] [stdout] --> tests/selftest.rs:78:13 [INFO] [stdout] | [INFO] [stdout] 78 | let _ = MetadataCommand::new() [INFO] [stdout] | ^^^^^^^^^^^^^^^ use of undeclared type `MetadataCommand` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `MetadataCommand` [INFO] [stdout] --> tests/selftest.rs:83:13 [INFO] [stdout] | [INFO] [stdout] 83 | let _ = MetadataCommand::new() [INFO] [stdout] | ^^^^^^^^^^^^^^^ use of undeclared type `MetadataCommand` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `CargoOpt` [INFO] [stdout] --> tests/selftest.rs:85:19 [INFO] [stdout] | [INFO] [stdout] 85 | .features(CargoOpt::AllFeatures) [INFO] [stdout] | ^^^^^^^^ use of undeclared type `CargoOpt` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `MetadataCommand` [INFO] [stdout] --> tests/selftest.rs:88:13 [INFO] [stdout] | [INFO] [stdout] 88 | let _ = MetadataCommand::new() [INFO] [stdout] | ^^^^^^^^^^^^^^^ use of undeclared type `MetadataCommand` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `MetadataCommand` [INFO] [stdout] --> tests/selftest.rs:97:11 [INFO] [stdout] | [INFO] [stdout] 97 | match MetadataCommand::new().manifest_path("foo").exec() { [INFO] [stdout] | ^^^^^^^^^^^^^^^ use of undeclared type `MetadataCommand` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to 13 previous errors [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] Some errors have detailed explanations: E0412, E0433, E0463. [INFO] [stdout] [INFO] [stdout] For more information about an error, try `rustc --explain E0412`. [INFO] [stdout] [INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Error` [INFO] [stdout] --> tests/selftest.rs:98:13 [INFO] [stdout] | [INFO] [stdout] 98 | Err(Error::CargoMetadata { stderr }) => assert_eq!( [INFO] [stdout] | ^^^^^ use of undeclared type `Error` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `MetadataCommand` [INFO] [stdout] --> tests/selftest.rs:108:11 [INFO] [stdout] | [INFO] [stdout] 108 | match MetadataCommand::new() [INFO] [stdout] | ^^^^^^^^^^^^^^^ use of undeclared type `MetadataCommand` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Error` [INFO] [stdout] --> tests/selftest.rs:112:13 [INFO] [stdout] | [INFO] [stdout] 112 | Err(Error::CargoMetadata { stderr }) => assert_eq!( [INFO] [stdout] | ^^^^^ use of undeclared type `Error` [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `alt_cargo_metadata` due to 14 previous errors [INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `MetadataCommand` [INFO] [stdout] --> tests/selftest.rs:122:11 [INFO] [stdout] | [INFO] [stdout] 122 | match MetadataCommand::new() [INFO] [stdout] | ^^^^^^^^^^^^^^^ use of undeclared type `MetadataCommand` [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Error` [INFO] [stdout] --> tests/selftest.rs:126:13 [INFO] [stdout] | [INFO] [stdout] 126 | Err(Error::Io(e)) => assert_eq!(e.kind(), std::io::ErrorKind::NotFound), [INFO] [stdout] | ^^^^^ use of undeclared type `Error` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `MetadataCommand` [INFO] [stdout] --> tests/selftest.rs:134:20 [INFO] [stdout] | [INFO] [stdout] 134 | let metadata = MetadataCommand::new() [INFO] [stdout] | ^^^^^^^^^^^^^^^ use of undeclared type `MetadataCommand` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to 16 previous errors [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] Some errors have detailed explanations: E0433, E0463. [INFO] [stdout] [INFO] [stdout] For more information about an error, try `rustc --explain E0433`. [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/errors.rs:96:34 [INFO] [stdout] | [INFO] [stdout] 96 | fn source(&self) -> Option<&(::std::error::Error + 'static)> { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(bare_trait_objects)]` on by default [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 [INFO] [stdout] help: use `dyn` [INFO] [stdout] | [INFO] [stdout] 96 | fn source(&self) -> Option<&(dyn (::std::error::Error + 'static))> { [INFO] [stdout] | +++++ + [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: build failed [INFO] running `Command { std: "docker" "inspect" "54c9393ba5c4ed4e4ea04fd8784c7cc50fa6129a9bbc014ea5c0cf32663c406e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "54c9393ba5c4ed4e4ea04fd8784c7cc50fa6129a9bbc014ea5c0cf32663c406e", kill_on_drop: false }` [INFO] [stdout] 54c9393ba5c4ed4e4ea04fd8784c7cc50fa6129a9bbc014ea5c0cf32663c406e