[INFO] fetching crate fmt2io 0.2.1...
[INFO] testing fmt2io-0.2.1 against beta-2026-03-05 for beta-1.95-1
[INFO] extracting crate fmt2io 0.2.1 into /workspace/builds/worker-7-tc2/source
[INFO] started tweaking crates.io crate fmt2io 0.2.1
[INFO] finished tweaking crates.io crate fmt2io 0.2.1
[INFO] tweaked toml for crates.io crate fmt2io 0.2.1 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate fmt2io 0.2.1 on toolchain beta-2026-03-05
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-03-05" "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-2026-03-05" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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-2026-03-05" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-03-05" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 569311cb8c0875e5dffb0d32ff372fdb0bc1873fd1e1e49b2d34e8b23971396b
[INFO] running `Command { std: "docker" "start" "-a" "569311cb8c0875e5dffb0d32ff372fdb0bc1873fd1e1e49b2d34e8b23971396b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "569311cb8c0875e5dffb0d32ff372fdb0bc1873fd1e1e49b2d34e8b23971396b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "569311cb8c0875e5dffb0d32ff372fdb0bc1873fd1e1e49b2d34e8b23971396b", kill_on_drop: false }`
[INFO] [stdout] 569311cb8c0875e5dffb0d32ff372fdb0bc1873fd1e1e49b2d34e8b23971396b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-03-05" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b86e3aa786e4444a96e65c61a569f390151cc1cdb76999a46027e03be989aa19
[INFO] running `Command { std: "docker" "start" "-a" "b86e3aa786e4444a96e65c61a569f390151cc1cdb76999a46027e03be989aa19", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr]    Compiling fmt2io v1.0.0
[INFO] [stderr]    Compiling fmt2io v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.27s
[INFO] running `Command { std: "docker" "inspect" "b86e3aa786e4444a96e65c61a569f390151cc1cdb76999a46027e03be989aa19", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b86e3aa786e4444a96e65c61a569f390151cc1cdb76999a46027e03be989aa19", kill_on_drop: false }`
[INFO] [stdout] b86e3aa786e4444a96e65c61a569f390151cc1cdb76999a46027e03be989aa19
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-03-05" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 65ea618d2f394222334e0e00adcdf246f08a488f0a568e0dfaa130abd0959f9f
[INFO] running `Command { std: "docker" "start" "-a" "65ea618d2f394222334e0e00adcdf246f08a488f0a568e0dfaa130abd0959f9f", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr]    Compiling fmt2io v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.26s
[INFO] running `Command { std: "docker" "inspect" "65ea618d2f394222334e0e00adcdf246f08a488f0a568e0dfaa130abd0959f9f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "65ea618d2f394222334e0e00adcdf246f08a488f0a568e0dfaa130abd0959f9f", kill_on_drop: false }`
[INFO] [stdout] 65ea618d2f394222334e0e00adcdf246f08a488f0a568e0dfaa130abd0959f9f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-03-05" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 3d46f6149ff4fdfe1b5bf23eea8f6535fecf6adc6d76325aff54d0230df2c679
[INFO] running `Command { std: "docker" "start" "-a" "3d46f6149ff4fdfe1b5bf23eea8f6535fecf6adc6d76325aff54d0230df2c679", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/fmt2io-dfdee52b30e3c1e3)
[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 fmt2io
[INFO] [stderr] error[E0464]: multiple candidates for `rlib` dependency `fmt2io` found
[INFO] [stderr]   --> src/lib.rs:23:1
[INFO] [stderr]    |
[INFO] [stderr] 23 | extern crate fmt2io;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: candidate #1: /opt/rustwide/target/debug/deps/libfmt2io-37f02167551ecd45.rlib
[INFO] [stderr]    = note: candidate #2: /opt/rustwide/target/debug/deps/libfmt2io-c03d0be09fec4bc0.rlib
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 1 previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0464`.
[INFO] [stderr] error: doctest failed, to rerun pass `--doc`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/rustup-home/toolchains/beta-2026-03-05-x86_64-unknown-linux-gnu/bin/rustdoc --edition=2015 --crate-type lib --color auto --crate-name fmt2io --test src/lib.rs --test-run-directory /opt/rustwide/workdir --extern fmt2io=/opt/rustwide/target/debug/deps/libfmt2io-c03d0be09fec4bc0.rlib --extern fmt2io=/opt/rustwide/target/debug/deps/libfmt2io-37f02167551ecd45.rlib -L dependency=/opt/rustwide/target/debug/deps -C embed-bitcode=no --check-cfg 'cfg(docsrs,test)' --check-cfg 'cfg(feature, values())' --cap-lints=warn --error-format human` (exit status: 1)
[INFO] [stderr] note: test exited abnormally; to see the full output pass --no-capture to the harness.
[INFO] running `Command { std: "docker" "inspect" "3d46f6149ff4fdfe1b5bf23eea8f6535fecf6adc6d76325aff54d0230df2c679", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3d46f6149ff4fdfe1b5bf23eea8f6535fecf6adc6d76325aff54d0230df2c679", kill_on_drop: false }`
[INFO] [stdout] 3d46f6149ff4fdfe1b5bf23eea8f6535fecf6adc6d76325aff54d0230df2c679
