[INFO] fetching crate fmterr 0.1.1...
[INFO] testing fmterr-0.1.1 against beta-2025-09-21 for beta-1.91-3
[INFO] extracting crate fmterr 0.1.1 into /workspace/builds/worker-3-tc2/source
[INFO] started tweaking crates.io crate fmterr 0.1.1
[INFO] finished tweaking crates.io crate fmterr 0.1.1
[INFO] tweaked toml for crates.io crate fmterr 0.1.1 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate fmterr 0.1.1 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] 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-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] ccde75b8dfe904b57f6f7c9b37a8cd0941438790704b5a63a1cffa9bad04c193
[INFO] running `Command { std: "docker" "start" "-a" "ccde75b8dfe904b57f6f7c9b37a8cd0941438790704b5a63a1cffa9bad04c193", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ccde75b8dfe904b57f6f7c9b37a8cd0941438790704b5a63a1cffa9bad04c193", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ccde75b8dfe904b57f6f7c9b37a8cd0941438790704b5a63a1cffa9bad04c193", kill_on_drop: false }`
[INFO] [stdout] ccde75b8dfe904b57f6f7c9b37a8cd0941438790704b5a63a1cffa9bad04c193
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 9857f68fb2114c8c29d70edd9613c45820cfc02be0f72f45b9c93c4c3287ec2e
[INFO] running `Command { std: "docker" "start" "-a" "9857f68fb2114c8c29d70edd9613c45820cfc02be0f72f45b9c93c4c3287ec2e", kill_on_drop: false }`
[INFO] [stderr]    Compiling fmterr v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.08s
[INFO] running `Command { std: "docker" "inspect" "9857f68fb2114c8c29d70edd9613c45820cfc02be0f72f45b9c93c4c3287ec2e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9857f68fb2114c8c29d70edd9613c45820cfc02be0f72f45b9c93c4c3287ec2e", kill_on_drop: false }`
[INFO] [stdout] 9857f68fb2114c8c29d70edd9613c45820cfc02be0f72f45b9c93c4c3287ec2e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] d93090ae4fc695148cf6df2328dc4fc8f1f706388e44b77686c74973d371dd0a
[INFO] running `Command { std: "docker" "start" "-a" "d93090ae4fc695148cf6df2328dc4fc8f1f706388e44b77686c74973d371dd0a", kill_on_drop: false }`
[INFO] [stderr]    Compiling fmterr v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.22s
[INFO] running `Command { std: "docker" "inspect" "d93090ae4fc695148cf6df2328dc4fc8f1f706388e44b77686c74973d371dd0a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d93090ae4fc695148cf6df2328dc4fc8f1f706388e44b77686c74973d371dd0a", kill_on_drop: false }`
[INFO] [stdout] d93090ae4fc695148cf6df2328dc4fc8f1f706388e44b77686c74973d371dd0a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 9d381042cf3c833d75adafa9bed7abf79e5029b2b81a933d71d8fd2ea58e413b
[INFO] running `Command { std: "docker" "start" "-a" "9d381042cf3c833d75adafa9bed7abf79e5029b2b81a933d71d8fd2ea58e413b", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/fmterr-6d4cc580b3fed79c)
[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] [stderr]    Doc-tests fmterr
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test src/lib.rs - (line 30) ... FAILED
[INFO] [stdout] test src/lib.rs - (line 19) ... FAILED
[INFO] [stdout] test src/lib.rs - (line 7) ... ok
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/lib.rs - (line 30) stdout ----
[INFO] [stdout] error: expected one of `!` or `::`, found `:`
[INFO] [stdout]  --> src/lib.rs:31:6
[INFO] [stdout]   |
[INFO] [stdout] 1 | Error: entity not found
[INFO] [stdout]   |      ^ expected one of `!` or `::`
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/lib.rs - (line 19) stdout ----
[INFO] [stdout] error: expected one of `!` or `::`, found `:`
[INFO] [stdout]  --> src/lib.rs:20:6
[INFO] [stdout]   |
[INFO] [stdout] 1 | Error: first error message
[INFO] [stdout]   |      ^ expected one of `!` or `::`
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/lib.rs - (line 19)
[INFO] [stdout]     src/lib.rs - (line 30)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 1 passed; 2 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.22s
[INFO] [stdout] 
[INFO] [stderr] error: doctest failed, to rerun pass `--doc`
[INFO] running `Command { std: "docker" "inspect" "9d381042cf3c833d75adafa9bed7abf79e5029b2b81a933d71d8fd2ea58e413b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9d381042cf3c833d75adafa9bed7abf79e5029b2b81a933d71d8fd2ea58e413b", kill_on_drop: false }`
[INFO] [stdout] 9d381042cf3c833d75adafa9bed7abf79e5029b2b81a933d71d8fd2ea58e413b