[INFO] fetching crate arc_from_toml 0.1.0...
[INFO] checking arc_from_toml-0.1.0 against try#f6e2f78768c57172b99c3e85892f867894dc7e30 for pr-75502
[INFO] extracting crate arc_from_toml 0.1.0 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate arc_from_toml 0.1.0 on toolchain f6e2f78768c57172b99c3e85892f867894dc7e30
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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-8/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 23e22164eedcd1cfcb908bd3b4b6b9e69d12b454dedec0fdca5965bd6e5d6124
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "23e22164eedcd1cfcb908bd3b4b6b9e69d12b454dedec0fdca5965bd6e5d6124", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "23e22164eedcd1cfcb908bd3b4b6b9e69d12b454dedec0fdca5965bd6e5d6124", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "23e22164eedcd1cfcb908bd3b4b6b9e69d12b454dedec0fdca5965bd6e5d6124", kill_on_drop: false }`
[INFO] [stdout] 23e22164eedcd1cfcb908bd3b4b6b9e69d12b454dedec0fdca5965bd6e5d6124
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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=forbid" "-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" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7f2657c7c8f5f7fbc8b42d1372f3f1d5fcb7885203321fb5b69f7b7ca98d3a05
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "7f2657c7c8f5f7fbc8b42d1372f3f1d5fcb7885203321fb5b69f7b7ca98d3a05", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.76
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking ascii v0.9.3
[INFO] [stderr]     Checking unicode-width v0.1.8
[INFO] [stderr]     Checking linked-hash-map v0.5.3
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling num-integer v0.1.43
[INFO] [stderr]     Checking unreachable v1.0.0
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking arc_convert_lib v1.0.0
[INFO] [stderr]     Checking combine v3.8.1
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking chrono v0.4.15
[INFO] [stderr]     Checking toml_edit v0.1.5
[INFO] [stderr]     Checking arc_from_toml v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `to_arc`
[INFO] [stdout]  --> src/utils/arc_parser.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub fn to_arc(text: &str) -> Result<String, &'static str> {
[INFO] [stdout]   |        ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type or module `Settings`
[INFO] [stdout]  --> tests/do_fmt.rs:7:13
[INFO] [stdout]   |
[INFO] [stdout] 7 |     let s = Settings::default();
[INFO] [stdout]   |             ^^^^^^^^ use of undeclared type or module `Settings`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0433`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `arc_from_toml`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "7f2657c7c8f5f7fbc8b42d1372f3f1d5fcb7885203321fb5b69f7b7ca98d3a05", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7f2657c7c8f5f7fbc8b42d1372f3f1d5fcb7885203321fb5b69f7b7ca98d3a05", kill_on_drop: false }`
[INFO] [stdout] 7f2657c7c8f5f7fbc8b42d1372f3f1d5fcb7885203321fb5b69f7b7ca98d3a05