[INFO] fetching crate impl_serde_serialize_error 1.0.4...
[INFO] testing impl_serde_serialize_error-1.0.4 against beta-2025-09-21 for beta-1.91-3
[INFO] extracting crate impl_serde_serialize_error 1.0.4 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate impl_serde_serialize_error 1.0.4
[INFO] finished tweaking crates.io crate impl_serde_serialize_error 1.0.4
[INFO] tweaked toml for crates.io crate impl_serde_serialize_error 1.0.4 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate impl_serde_serialize_error 1.0.4 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 9 packages to latest compatible versions
[INFO] [stderr]       Adding thiserror v1.0.69 (available: v2.0.17)
[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-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 000ca5c8e8a8bd20e7ffd98a2dfafdb9b3015e2108ffbf83137261940115b601
[INFO] running `Command { std: "docker" "start" "-a" "000ca5c8e8a8bd20e7ffd98a2dfafdb9b3015e2108ffbf83137261940115b601", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "000ca5c8e8a8bd20e7ffd98a2dfafdb9b3015e2108ffbf83137261940115b601", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "000ca5c8e8a8bd20e7ffd98a2dfafdb9b3015e2108ffbf83137261940115b601", kill_on_drop: false }`
[INFO] [stdout] 000ca5c8e8a8bd20e7ffd98a2dfafdb9b3015e2108ffbf83137261940115b601
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] a30f955a2cb728f8abaf35ecce06331410e6d8c4297c2028a45c5e5ea2257c09
[INFO] running `Command { std: "docker" "start" "-a" "a30f955a2cb728f8abaf35ecce06331410e6d8c4297c2028a45c5e5ea2257c09", kill_on_drop: false }`
[INFO] [stderr]    Compiling impl_serde_serialize_error v1.0.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.08s
[INFO] running `Command { std: "docker" "inspect" "a30f955a2cb728f8abaf35ecce06331410e6d8c4297c2028a45c5e5ea2257c09", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a30f955a2cb728f8abaf35ecce06331410e6d8c4297c2028a45c5e5ea2257c09", kill_on_drop: false }`
[INFO] [stdout] a30f955a2cb728f8abaf35ecce06331410e6d8c4297c2028a45c5e5ea2257c09
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 90d8f50c0341eab66e8b72943421c9b2bb444f71bf7642cc4c8ef76f24172cc5
[INFO] running `Command { std: "docker" "start" "-a" "90d8f50c0341eab66e8b72943421c9b2bb444f71bf7642cc4c8ef76f24172cc5", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v2.0.106
[INFO] [stderr]    Compiling thiserror-impl v1.0.69
[INFO] [stderr]    Compiling thiserror v1.0.69
[INFO] [stderr]    Compiling impl_serde_serialize_error v1.0.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: enum `SerializationError` is never used
[INFO] [stdout]    --> src/lib.rs:251:10
[INFO] [stdout]     |
[INFO] [stdout] 251 |     enum SerializationError {
[INFO] [stdout]     |          ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MySerializer` is never constructed
[INFO] [stdout]    --> src/lib.rs:268:16
[INFO] [stdout]     |
[INFO] [stdout] 268 |         struct MySerializer;
[INFO] [stdout]     |                ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 3.83s
[INFO] running `Command { std: "docker" "inspect" "90d8f50c0341eab66e8b72943421c9b2bb444f71bf7642cc4c8ef76f24172cc5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "90d8f50c0341eab66e8b72943421c9b2bb444f71bf7642cc4c8ef76f24172cc5", kill_on_drop: false }`
[INFO] [stdout] 90d8f50c0341eab66e8b72943421c9b2bb444f71bf7642cc4c8ef76f24172cc5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 4dcb5c5050ba55b5c777340a187f6a16f0e82ce9442e536ab75255df510d77fa
[INFO] running `Command { std: "docker" "start" "-a" "4dcb5c5050ba55b5c777340a187f6a16f0e82ce9442e536ab75255df510d77fa", kill_on_drop: false }`
[INFO] [stderr] warning: enum `SerializationError` is never used
[INFO] [stderr]    --> src/lib.rs:251:10
[INFO] [stderr]     |
[INFO] [stderr] 251 |     enum SerializationError {
[INFO] [stderr]     |          ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct `MySerializer` is never constructed
[INFO] [stderr]    --> src/lib.rs:268:16
[INFO] [stderr]     |
[INFO] [stderr] 268 |         struct MySerializer;
[INFO] [stderr]     |                ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `impl_serde_serialize_error` (lib test) generated 2 warnings
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/impl_serde_serialize_error-6e4d6001d7db1d31)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test tests::all_errors ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests impl_serde_serialize_error
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs - impl_serde_serialize_error (line 9) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.37s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "4dcb5c5050ba55b5c777340a187f6a16f0e82ce9442e536ab75255df510d77fa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4dcb5c5050ba55b5c777340a187f6a16f0e82ce9442e536ab75255df510d77fa", kill_on_drop: false }`
[INFO] [stdout] 4dcb5c5050ba55b5c777340a187f6a16f0e82ce9442e536ab75255df510d77fa