[INFO] fetching crate buffered_logger 1.2.0...
[INFO] testing buffered_logger-1.2.0 against beta-2026-04-21 for beta-1.96-3
[INFO] extracting crate buffered_logger 1.2.0 into /workspace/builds/worker-3-tc2/source
[INFO] started tweaking crates.io crate buffered_logger 1.2.0
[INFO] finished tweaking crates.io crate buffered_logger 1.2.0
[INFO] tweaked toml for crates.io crate buffered_logger 1.2.0 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate buffered_logger 1.2.0 on toolchain beta-2026-04-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-04-21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate buffered_logger 1.2.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-04-21" "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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d8b509b6ae4bc52c3ff6a67601e02c09baba8c8adb3dbda3d8dee3586620ff77
[INFO] running `Command { std: "docker" "start" "-a" "d8b509b6ae4bc52c3ff6a67601e02c09baba8c8adb3dbda3d8dee3586620ff77", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d8b509b6ae4bc52c3ff6a67601e02c09baba8c8adb3dbda3d8dee3586620ff77", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d8b509b6ae4bc52c3ff6a67601e02c09baba8c8adb3dbda3d8dee3586620ff77", kill_on_drop: false }`
[INFO] [stdout] d8b509b6ae4bc52c3ff6a67601e02c09baba8c8adb3dbda3d8dee3586620ff77
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] dbcd24013d8e48b8fb834f11308fb629a9c938be0ebc05e8f98c443181b1574b
[INFO] running `Command { std: "docker" "start" "-a" "dbcd24013d8e48b8fb834f11308fb629a9c938be0ebc05e8f98c443181b1574b", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling libc v0.2.112
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling crossbeam-utils v0.8.5
[INFO] [stderr]    Compiling crc32fast v1.3.0
[INFO] [stderr]    Compiling adler v1.0.2
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling regex-syntax v0.6.25
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]    Compiling crossbeam-channel v0.5.1
[INFO] [stderr]    Compiling aho-corasick v0.7.18
[INFO] [stderr]    Compiling time v0.1.44
[INFO] [stderr]    Compiling flate2 v1.0.22
[INFO] [stderr]    Compiling chrono v0.4.19
[INFO] [stderr]    Compiling regex v1.5.4
[INFO] [stderr]    Compiling buffered_logger v1.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 14.51s
[INFO] running `Command { std: "docker" "inspect" "dbcd24013d8e48b8fb834f11308fb629a9c938be0ebc05e8f98c443181b1574b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dbcd24013d8e48b8fb834f11308fb629a9c938be0ebc05e8f98c443181b1574b", kill_on_drop: false }`
[INFO] [stdout] dbcd24013d8e48b8fb834f11308fb629a9c938be0ebc05e8f98c443181b1574b
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 96be9329b3d18a582045eb563a9641a015122a89d93c0d54fc34eca0064d06b0
[INFO] running `Command { std: "docker" "start" "-a" "96be9329b3d18a582045eb563a9641a015122a89d93c0d54fc34eca0064d06b0", kill_on_drop: false }`
[INFO] [stderr]    Compiling buffered_logger v1.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.43s
[INFO] running `Command { std: "docker" "inspect" "96be9329b3d18a582045eb563a9641a015122a89d93c0d54fc34eca0064d06b0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "96be9329b3d18a582045eb563a9641a015122a89d93c0d54fc34eca0064d06b0", kill_on_drop: false }`
[INFO] [stdout] 96be9329b3d18a582045eb563a9641a015122a89d93c0d54fc34eca0064d06b0
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] b7610475acb9f7da8ef303ecd74b15c4168407ec84ad020ad966213489ca68cc
[INFO] running `Command { std: "docker" "start" "-a" "b7610475acb9f7da8ef303ecd74b15c4168407ec84ad020ad966213489ca68cc", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.08s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/buffered_logger-1c700bd1fbb3da9b)
[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]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/buffered_logger-3c939e7c97403585)
[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 buffered_logger
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test src/lib.rs - (line 10) ... FAILED
[INFO] [stdout] test src/lib.rs - Logger::init (line 85) ... ok
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/lib.rs - (line 10) stdout ----
[INFO] [stdout] Test executable failed (exit status: 255).
[INFO] [stdout] 
[INFO] [stdout] stderr:
[INFO] [stdout] buffered_logger: Failed to created dir logs - Read-only file system (os error 30)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/lib.rs - (line 10)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 1 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.57s
[INFO] [stdout] 
[INFO] [stderr] error: doctest failed, to rerun pass `--doc`
[INFO] running `Command { std: "docker" "inspect" "b7610475acb9f7da8ef303ecd74b15c4168407ec84ad020ad966213489ca68cc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b7610475acb9f7da8ef303ecd74b15c4168407ec84ad020ad966213489ca68cc", kill_on_drop: false }`
[INFO] [stdout] b7610475acb9f7da8ef303ecd74b15c4168407ec84ad020ad966213489ca68cc