[INFO] cloning repository https://github.com/ln56b/rust-book-collections-ex
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ln56b/rust-book-collections-ex" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fln56b%2Frust-book-collections-ex", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fln56b%2Frust-book-collections-ex'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 483518d5ae7641c8cea8f30850a5eb7e358b338e
[INFO] testing ln56b/rust-book-collections-ex against beta-2026-04-21 for beta-1.96-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fln56b%2Frust-book-collections-ex" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/ln56b/rust-book-collections-ex
[INFO] finished tweaking git repo https://github.com/ln56b/rust-book-collections-ex
[INFO] tweaked toml for git repo https://github.com/ln56b/rust-book-collections-ex written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/ln56b/rust-book-collections-ex 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 git repo https://github.com/ln56b/rust-book-collections-ex 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-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-2026-04-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cc1f243485008c1ce8117e792b47aa2cf914bfa61ed7bdae7eac2c9bd1523fde
[INFO] running `Command { std: "docker" "start" "-a" "cc1f243485008c1ce8117e792b47aa2cf914bfa61ed7bdae7eac2c9bd1523fde", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cc1f243485008c1ce8117e792b47aa2cf914bfa61ed7bdae7eac2c9bd1523fde", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cc1f243485008c1ce8117e792b47aa2cf914bfa61ed7bdae7eac2c9bd1523fde", kill_on_drop: false }`
[INFO] [stdout] cc1f243485008c1ce8117e792b47aa2cf914bfa61ed7bdae7eac2c9bd1523fde
[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-2026-04-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e4074ccc7029b6033c53c7d54adf74967332a221604e51fbcea872cf450f1e2d
[INFO] running `Command { std: "docker" "start" "-a" "e4074ccc7029b6033c53c7d54adf74967332a221604e51fbcea872cf450f1e2d", kill_on_drop: false }`
[INFO] [stderr]    Compiling common-collections v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.70s
[INFO] running `Command { std: "docker" "inspect" "e4074ccc7029b6033c53c7d54adf74967332a221604e51fbcea872cf450f1e2d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e4074ccc7029b6033c53c7d54adf74967332a221604e51fbcea872cf450f1e2d", kill_on_drop: false }`
[INFO] [stdout] e4074ccc7029b6033c53c7d54adf74967332a221604e51fbcea872cf450f1e2d
[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-2026-04-21" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4b11b67db22716b21a038c45860c0dbad900be41ff3c471c7270774e4f360c85
[INFO] running `Command { std: "docker" "start" "-a" "4b11b67db22716b21a038c45860c0dbad900be41ff3c471c7270774e4f360c85", kill_on_drop: false }`
[INFO] [stderr]    Compiling common-collections v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.72s
[INFO] running `Command { std: "docker" "inspect" "4b11b67db22716b21a038c45860c0dbad900be41ff3c471c7270774e4f360c85", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4b11b67db22716b21a038c45860c0dbad900be41ff3c471c7270774e4f360c85", kill_on_drop: false }`
[INFO] [stdout] 4b11b67db22716b21a038c45860c0dbad900be41ff3c471c7270774e4f360c85
[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-2026-04-21" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 1cda2b2d2f28b9bcf0509a72c18b84a5848905244c90e19246bb4df6a565de54
[INFO] running `Command { std: "docker" "start" "-a" "1cda2b2d2f28b9bcf0509a72c18b84a5848905244c90e19246bb4df6a565de54", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/common_collections-a907d8cc3165fe7b)
[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" "1cda2b2d2f28b9bcf0509a72c18b84a5848905244c90e19246bb4df6a565de54", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1cda2b2d2f28b9bcf0509a72c18b84a5848905244c90e19246bb4df6a565de54", kill_on_drop: false }`
[INFO] [stdout] 1cda2b2d2f28b9bcf0509a72c18b84a5848905244c90e19246bb4df6a565de54
