[INFO] fetching crate switchgear-error 0.1.29...
[INFO] testing switchgear-error-0.1.29 against 1.100.0-beta.1 for beta-1.100-2
[INFO] extracting crate switchgear-error 0.1.29 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate switchgear-error 0.1.29
[INFO] finished tweaking crates.io crate switchgear-error 0.1.29
[INFO] tweaked toml for crates.io crate switchgear-error 0.1.29 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate switchgear-error 0.1.29 on toolchain 1.100.0-beta.1
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.100.0-beta.1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate switchgear-error 0.1.29 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" "+1.100.0-beta.1" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:3111399a4047eeb3a02b7a90e478d715f38a8c6669b5c4b49d30a17385265909" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 9abe573f6c22d65cf2633acb12fc4e283eb2866b8d19626d8e5588b1303d2473
[INFO] running `Command { std: "docker" "start" "9abe573f6c22d65cf2633acb12fc4e283eb2866b8d19626d8e5588b1303d2473", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9abe573f6c22d65cf2633acb12fc4e283eb2866b8d19626d8e5588b1303d2473", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "9abe573f6c22d65cf2633acb12fc4e283eb2866b8d19626d8e5588b1303d2473" "/opt/rustwide/cargo-home/bin/cargo" "+1.100.0-beta.1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9abe573f6c22d65cf2633acb12fc4e283eb2866b8d19626d8e5588b1303d2473", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "9abe573f6c22d65cf2633acb12fc4e283eb2866b8d19626d8e5588b1303d2473" "/opt/rustwide/cargo-home/bin/cargo" "+1.100.0-beta.1" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v2.0.119
[INFO] [stderr]    Compiling tracing-attributes v0.1.31
[INFO] [stderr]    Compiling tracing v0.1.44
[INFO] [stderr]    Compiling switchgear-error v0.1.29 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused dependency `tracing`
[INFO] [stderr]  --> Cargo.toml:1:15
[INFO] [stderr]   |
[INFO] [stderr] 1 | [dependencies.tracing]
[INFO] [stderr]   |               ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `cargo::unused_dependencies` is set to `warn` by default
[INFO] [stderr] help: consider removing the dependency on `tracing`
[INFO] [stderr] warning: `switchgear-error` (manifest) generated 1 warning
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.12s
[INFO] running `Command { std: "docker" "inspect" "9abe573f6c22d65cf2633acb12fc4e283eb2866b8d19626d8e5588b1303d2473", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "9abe573f6c22d65cf2633acb12fc4e283eb2866b8d19626d8e5588b1303d2473" "/opt/rustwide/cargo-home/bin/cargo" "+1.100.0-beta.1" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling switchgear-error v0.1.29 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused dependency `tracing`
[INFO] [stderr]  --> Cargo.toml:1:15
[INFO] [stderr]   |
[INFO] [stderr] 1 | [dependencies.tracing]
[INFO] [stderr]   |               ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `cargo::unused_dependencies` is set to `warn` by default
[INFO] [stderr] help: consider removing the dependency on `tracing`
[INFO] [stderr] warning: `switchgear-error` (manifest) generated 1 warning
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.62s
[INFO] running `Command { std: "docker" "inspect" "9abe573f6c22d65cf2633acb12fc4e283eb2866b8d19626d8e5588b1303d2473", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "9abe573f6c22d65cf2633acb12fc4e283eb2866b8d19626d8e5588b1303d2473" "/opt/rustwide/cargo-home/bin/cargo" "+1.100.0-beta.1" "test" "--frozen", kill_on_drop: false }`
[INFO] [stderr] warning: unused dependency `tracing`
[INFO] [stderr]  --> Cargo.toml:1:15
[INFO] [stderr]   |
[INFO] [stderr] 1 | [dependencies.tracing]
[INFO] [stderr]   |               ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `cargo::unused_dependencies` is set to `warn` by default
[INFO] [stderr] help: consider removing the dependency on `tracing`
[INFO] [stderr] warning: `switchgear-error` (manifest) generated 1 warning
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/build/switchgear-error/9b3d52434da4cf2e/out/switchgear_error-9b3d52434da4cf2e)
[INFO] [stdout] 
[INFO] [stdout] running 16 tests
[INFO] [stdout] test chain::tests::outer_plus_context_source_no_further_source ... ok
[INFO] [stdout] test chain::tests::single_node_no_source ... ok
[INFO] [stdout] test chain::tests::foreign_head_empty_word_falls_back_to_bare_error_label ... ok
[INFO] [stdout] test chain::tests::three_level_structured_chain ... ok
[INFO] [stdout] test chain::tests::chain_terminator_no_dangling_separator ... ok
[INFO] [stdout] test chain::tests::deep_foreign_chain_past_initial_foreign_transition ... ok
[INFO] [stdout] test chain::tests::outer_plus_foreign_leaf_only ... ok
[INFO] [stdout] test chain::tests::structured_then_foreign_transition_foolproof ... ok
[INFO] [stdout] test tests::foreign_context_preserves_original_source ... ok
[INFO] [stdout] test tests::chained_context_captures_caller_location ... ok
[INFO] [stdout] test tests::with_chained_context_captures_caller_location ... ok
[INFO] [stdout] test tests::chained_context_preserves_child_in_source_context ... ok
[INFO] [stdout] test tests::foreign_context_captures_caller_location ... ok
[INFO] [stdout] test tests::with_chained_context_preserves_child_in_source_context ... ok
[INFO] [stdout] test tests::with_foreign_context_captures_caller_location ... ok
[INFO] [stdout] test tests::with_foreign_context_preserves_original_source ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 16 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests switchgear_error
[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" "9abe573f6c22d65cf2633acb12fc4e283eb2866b8d19626d8e5588b1303d2473", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9abe573f6c22d65cf2633acb12fc4e283eb2866b8d19626d8e5588b1303d2473", kill_on_drop: false }`
[INFO] [stdout] 9abe573f6c22d65cf2633acb12fc4e283eb2866b8d19626d8e5588b1303d2473
