[INFO] fetching crate letr 0.2.1...
[INFO] testing letr-0.2.1 against beta-2025-09-21 for beta-1.91-3
[INFO] extracting crate letr 0.2.1 into /workspace/builds/worker-7-tc2/source
[INFO] started tweaking crates.io crate letr 0.2.1
[INFO] finished tweaking crates.io crate letr 0.2.1
[INFO] tweaked toml for crates.io crate letr 0.2.1 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate letr 0.2.1 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-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e4ef29e545a82ff330d48e156c0c8917d390e81aad76bdc4a16abef78672274e
[INFO] running `Command { std: "docker" "start" "-a" "e4ef29e545a82ff330d48e156c0c8917d390e81aad76bdc4a16abef78672274e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e4ef29e545a82ff330d48e156c0c8917d390e81aad76bdc4a16abef78672274e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e4ef29e545a82ff330d48e156c0c8917d390e81aad76bdc4a16abef78672274e", kill_on_drop: false }`
[INFO] [stdout] e4ef29e545a82ff330d48e156c0c8917d390e81aad76bdc4a16abef78672274e
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 38f8c52ab3e70bd0aa9fb708e7eb32d44671265829d6ba43cca5bd977bbc887a
[INFO] running `Command { std: "docker" "start" "-a" "38f8c52ab3e70bd0aa9fb708e7eb32d44671265829d6ba43cca5bd977bbc887a", kill_on_drop: false }`
[INFO] [stderr]    Compiling letr v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.11s
[INFO] running `Command { std: "docker" "inspect" "38f8c52ab3e70bd0aa9fb708e7eb32d44671265829d6ba43cca5bd977bbc887a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "38f8c52ab3e70bd0aa9fb708e7eb32d44671265829d6ba43cca5bd977bbc887a", kill_on_drop: false }`
[INFO] [stdout] 38f8c52ab3e70bd0aa9fb708e7eb32d44671265829d6ba43cca5bd977bbc887a
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 88626425b3486ad783f6db41b915d45e8b17b8a2bb6dff4a32acf961050260b0
[INFO] running `Command { std: "docker" "start" "-a" "88626425b3486ad783f6db41b915d45e8b17b8a2bb6dff4a32acf961050260b0", kill_on_drop: false }`
[INFO] [stderr]    Compiling letr v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.29s
[INFO] running `Command { std: "docker" "inspect" "88626425b3486ad783f6db41b915d45e8b17b8a2bb6dff4a32acf961050260b0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "88626425b3486ad783f6db41b915d45e8b17b8a2bb6dff4a32acf961050260b0", kill_on_drop: false }`
[INFO] [stdout] 88626425b3486ad783f6db41b915d45e8b17b8a2bb6dff4a32acf961050260b0
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 4d0303bdf685159c783ac6545cf1ecc17151650cfee7bb59a360c32caa34660c
[INFO] running `Command { std: "docker" "start" "-a" "4d0303bdf685159c783ac6545cf1ecc17151650cfee7bb59a360c32caa34660c", 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/letr-236a88a694eaba43)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test test::simple ... 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 letr
[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" "4d0303bdf685159c783ac6545cf1ecc17151650cfee7bb59a360c32caa34660c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4d0303bdf685159c783ac6545cf1ecc17151650cfee7bb59a360c32caa34660c", kill_on_drop: false }`
[INFO] [stdout] 4d0303bdf685159c783ac6545cf1ecc17151650cfee7bb59a360c32caa34660c