[INFO] crate arc_from_toml 0.1.0 is already in cache
[INFO] testing arc_from_toml-0.1.0 against master#28742a1146f10a4f09369baad027a464acb7a766 for pr-71274
[INFO] extracting crate arc_from_toml 0.1.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate arc_from_toml 0.1.0 on toolchain 28742a1146f10a4f09369baad027a464acb7a766
[INFO] running `"/workspace/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate arc_from_toml 0.1.0
[INFO] finished tweaking crates.io crate arc_from_toml 0.1.0
[INFO] tweaked toml for crates.io crate arc_from_toml 0.1.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "build" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 6f4421629c40b7df81b19d414cebe334e0de94167e8f4e82fac809e3c6ecf1f5
[INFO] running `"docker" "start" "-a" "6f4421629c40b7df81b19d414cebe334e0de94167e8f4e82fac809e3c6ecf1f5"`
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling either v1.5.3
[INFO] [stderr]    Compiling ascii v0.9.3
[INFO] [stderr]    Compiling unreachable v1.0.0
[INFO] [stderr]    Compiling arc_convert_lib v1.0.0
[INFO] [stderr]    Compiling time v0.1.42
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]    Compiling num-integer v0.1.42
[INFO] [stderr]    Compiling combine v3.8.1
[INFO] [stderr]    Compiling chrono v0.4.11
[INFO] [stderr]    Compiling toml_edit v0.1.5
[INFO] [stderr]    Compiling arc_from_toml v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: function is never used: `to_arc`
[INFO] [stderr]  --> src/utils/arc_parser.rs:5:8
[INFO] [stderr]   |
[INFO] [stderr] 5 | pub fn to_arc(text: &str) -> Result<String, &'static str> {
[INFO] [stderr]   |        ^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 44.75s
[INFO] running `"docker" "inspect" "6f4421629c40b7df81b19d414cebe334e0de94167e8f4e82fac809e3c6ecf1f5"`
[INFO] running `"docker" "rm" "-f" "6f4421629c40b7df81b19d414cebe334e0de94167e8f4e82fac809e3c6ecf1f5"`
[INFO] [stdout] 6f4421629c40b7df81b19d414cebe334e0de94167e8f4e82fac809e3c6ecf1f5
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "test" "--frozen" "--no-run"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] e25d34bf8f8c1601d83a2c67e7cb11a9d2cba5cd80987d1604d4395cd5c555ac
[INFO] running `"docker" "start" "-a" "e25d34bf8f8c1601d83a2c67e7cb11a9d2cba5cd80987d1604d4395cd5c555ac"`
[INFO] [stderr]    Compiling arc_from_toml v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: function is never used: `to_arc`
[INFO] [stderr]  --> src/utils/arc_parser.rs:5:8
[INFO] [stderr]   |
[INFO] [stderr] 5 | pub fn to_arc(text: &str) -> Result<String, &'static str> {
[INFO] [stderr]   |        ^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `Settings`
[INFO] [stderr]  --> tests/do_fmt.rs:7:13
[INFO] [stderr]   |
[INFO] [stderr] 7 |     let s = Settings::default();
[INFO] [stderr]   |             ^^^^^^^^ use of undeclared type or module `Settings`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0433`.
[INFO] [stderr] error: could not compile `arc_from_toml`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "e25d34bf8f8c1601d83a2c67e7cb11a9d2cba5cd80987d1604d4395cd5c555ac"`
[INFO] running `"docker" "rm" "-f" "e25d34bf8f8c1601d83a2c67e7cb11a9d2cba5cd80987d1604d4395cd5c555ac"`
[INFO] [stdout] e25d34bf8f8c1601d83a2c67e7cb11a9d2cba5cd80987d1604d4395cd5c555ac