[INFO] fetching crate cow-rc-str 0.1.0...
[INFO] testing cow-rc-str-0.1.0 against beta-2025-09-21 for beta-1.91-3
[INFO] extracting crate cow-rc-str 0.1.0 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate cow-rc-str 0.1.0
[INFO] finished tweaking crates.io crate cow-rc-str 0.1.0
[INFO] tweaked toml for crates.io crate cow-rc-str 0.1.0 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate cow-rc-str 0.1.0 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]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 8e60fc47efad40c2d2d6b232c642c1169d9d1480fe06eed0fb329bf4f39b806e
[INFO] running `Command { std: "docker" "start" "-a" "8e60fc47efad40c2d2d6b232c642c1169d9d1480fe06eed0fb329bf4f39b806e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8e60fc47efad40c2d2d6b232c642c1169d9d1480fe06eed0fb329bf4f39b806e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8e60fc47efad40c2d2d6b232c642c1169d9d1480fe06eed0fb329bf4f39b806e", kill_on_drop: false }`
[INFO] [stdout] 8e60fc47efad40c2d2d6b232c642c1169d9d1480fe06eed0fb329bf4f39b806e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] fd9873a095d52f8c4202968f45dc9de13065d2f20dc5ebb5f15e2b59e0e98228
[INFO] running `Command { std: "docker" "start" "-a" "fd9873a095d52f8c4202968f45dc9de13065d2f20dc5ebb5f15e2b59e0e98228", kill_on_drop: false }`
[INFO] [stderr]    Compiling cow-rc-str v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.11s
[INFO] running `Command { std: "docker" "inspect" "fd9873a095d52f8c4202968f45dc9de13065d2f20dc5ebb5f15e2b59e0e98228", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fd9873a095d52f8c4202968f45dc9de13065d2f20dc5ebb5f15e2b59e0e98228", kill_on_drop: false }`
[INFO] [stdout] fd9873a095d52f8c4202968f45dc9de13065d2f20dc5ebb5f15e2b59e0e98228
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] a99f3cef943f739ca2f3f7fd704477fddd723b3dbca6ba6244119f06ac757e37
[INFO] running `Command { std: "docker" "start" "-a" "a99f3cef943f739ca2f3f7fd704477fddd723b3dbca6ba6244119f06ac757e37", kill_on_drop: false }`
[INFO] [stderr]    Compiling cow-rc-str v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.59s
[INFO] running `Command { std: "docker" "inspect" "a99f3cef943f739ca2f3f7fd704477fddd723b3dbca6ba6244119f06ac757e37", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a99f3cef943f739ca2f3f7fd704477fddd723b3dbca6ba6244119f06ac757e37", kill_on_drop: false }`
[INFO] [stdout] a99f3cef943f739ca2f3f7fd704477fddd723b3dbca6ba6244119f06ac757e37
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] b6318ea40248c6cfdedbf7367762d307721f5521c88ad322d55de312c57ed840
[INFO] running `Command { std: "docker" "start" "-a" "b6318ea40248c6cfdedbf7367762d307721f5521c88ad322d55de312c57ed840", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/cow_rc_str-aae7363159c6a250)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stderr]    Doc-tests cow_rc_str
[INFO] [stdout] test tests::test_creation ... 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] [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" "b6318ea40248c6cfdedbf7367762d307721f5521c88ad322d55de312c57ed840", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b6318ea40248c6cfdedbf7367762d307721f5521c88ad322d55de312c57ed840", kill_on_drop: false }`
[INFO] [stdout] b6318ea40248c6cfdedbf7367762d307721f5521c88ad322d55de312c57ed840