[INFO] fetching crate error-context 0.1.2...
[INFO] testing error-context-0.1.2 against beta-2025-09-21 for beta-1.91-3
[INFO] extracting crate error-context 0.1.2 into /workspace/builds/worker-2-tc2/source
[INFO] started tweaking crates.io crate error-context 0.1.2
[INFO] finished tweaking crates.io crate error-context 0.1.2
[INFO] tweaked toml for crates.io crate error-context 0.1.2 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate error-context 0.1.2 on toolchain beta-2025-09-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 1 package to latest compatible version
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cc8351d675bd930a1aa2d2514e28ce9de3e44bf584bb189c0d1e03d35d9ca9b4
[INFO] running `Command { std: "docker" "start" "-a" "cc8351d675bd930a1aa2d2514e28ce9de3e44bf584bb189c0d1e03d35d9ca9b4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cc8351d675bd930a1aa2d2514e28ce9de3e44bf584bb189c0d1e03d35d9ca9b4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cc8351d675bd930a1aa2d2514e28ce9de3e44bf584bb189c0d1e03d35d9ca9b4", kill_on_drop: false }`
[INFO] [stdout] cc8351d675bd930a1aa2d2514e28ce9de3e44bf584bb189c0d1e03d35d9ca9b4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 169d4c895232d1a46e73f1aebabf7cfcb1c9c6ebfcb150a6c3e8cf660b98bb6e
[INFO] running `Command { std: "docker" "start" "-a" "169d4c895232d1a46e73f1aebabf7cfcb1c9c6ebfcb150a6c3e8cf660b98bb6e", kill_on_drop: false }`
[INFO] [stderr]    Compiling error-context v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/lib.rs:166:16
[INFO] [stdout]     |
[INFO] [stdout] 166 |         self.0.description()
[INFO] [stdout]     |                ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/lib.rs:229:20
[INFO] [stdout]     |
[INFO] [stdout] 229 |         self.error.description()
[INFO] [stdout]     |                    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.20s
[INFO] running `Command { std: "docker" "inspect" "169d4c895232d1a46e73f1aebabf7cfcb1c9c6ebfcb150a6c3e8cf660b98bb6e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "169d4c895232d1a46e73f1aebabf7cfcb1c9c6ebfcb150a6c3e8cf660b98bb6e", kill_on_drop: false }`
[INFO] [stdout] 169d4c895232d1a46e73f1aebabf7cfcb1c9c6ebfcb150a6c3e8cf660b98bb6e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4865d9e16b29bf557a3a2846f80a436d786adec286e1f4a6784db314b57bd64a
[INFO] running `Command { std: "docker" "start" "-a" "4865d9e16b29bf557a3a2846f80a436d786adec286e1f4a6784db314b57bd64a", kill_on_drop: false }`
[INFO] [stderr]    Compiling assert_matches v1.5.0
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/lib.rs:166:16
[INFO] [stdout]     |
[INFO] [stdout] 166 |         self.0.description()
[INFO] [stdout]     |                ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/lib.rs:229:20
[INFO] [stdout]     |
[INFO] [stdout] 229 |         self.error.description()
[INFO] [stdout]     |                    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling error-context v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/lib.rs:166:16
[INFO] [stdout]     |
[INFO] [stdout] 166 |         self.0.description()
[INFO] [stdout]     |                ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/lib.rs:229:20
[INFO] [stdout]     |
[INFO] [stdout] 229 |         self.error.description()
[INFO] [stdout]     |                    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `error` is never read
[INFO] [stdout]    --> src/lib.rs:344:13
[INFO] [stdout]     |
[INFO] [stdout] 343 |         IoError {
[INFO] [stdout]     |         ------- field in this variant
[INFO] [stdout] 344 |             error: io::Error,
[INFO] [stdout]     |             ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `FooError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.63s
[INFO] running `Command { std: "docker" "inspect" "4865d9e16b29bf557a3a2846f80a436d786adec286e1f4a6784db314b57bd64a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4865d9e16b29bf557a3a2846f80a436d786adec286e1f4a6784db314b57bd64a", kill_on_drop: false }`
[INFO] [stdout] 4865d9e16b29bf557a3a2846f80a436d786adec286e1f4a6784db314b57bd64a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 9e80fd6d1d176bd955983c7abfcef43ef01d50b2869117f692c64090965018f5
[INFO] running `Command { std: "docker" "start" "-a" "9e80fd6d1d176bd955983c7abfcef43ef01d50b2869117f692c64090965018f5", kill_on_drop: false }`
[INFO] [stderr] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stderr]    --> src/lib.rs:166:16
[INFO] [stderr]     |
[INFO] [stderr] 166 |         self.0.description()
[INFO] [stderr]     |                ^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stderr]    --> src/lib.rs:229:20
[INFO] [stderr]     |
[INFO] [stderr] 229 |         self.error.description()
[INFO] [stderr]     |                    ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `error-context` (lib) generated 2 warnings
[INFO] [stderr] warning: field `error` is never read
[INFO] [stderr]    --> src/lib.rs:344:13
[INFO] [stderr]     |
[INFO] [stderr] 343 |         IoError {
[INFO] [stderr]     |         ------- field in this variant
[INFO] [stderr] 344 |             error: io::Error,
[INFO] [stderr]     |             ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `FooError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `error-context` (lib test) generated 3 warnings (2 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/error_context-c57f54fc92ff150c)
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test tests::test_in_context_of_type_context ... ok
[INFO] [stdout] test tests::test_wrapped_context ... ok
[INFO] [stdout] test tests::test_wrapped_context_nested ... ok
[INFO] [stdout] test tests::test_wrap_in_context_of_type_context ... ok
[INFO] [stdout] test tests::test_in_type_context ... ok
[INFO] [stdout] test tests::test_in_context_of_wrapped_context ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests error_context
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs - (line 54) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.24s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "9e80fd6d1d176bd955983c7abfcef43ef01d50b2869117f692c64090965018f5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9e80fd6d1d176bd955983c7abfcef43ef01d50b2869117f692c64090965018f5", kill_on_drop: false }`
[INFO] [stdout] 9e80fd6d1d176bd955983c7abfcef43ef01d50b2869117f692c64090965018f5