[INFO] cloning repository https://github.com/uthbees/the-rust-book-chapters-15-and-16
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/uthbees/the-rust-book-chapters-15-and-16" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Futhbees%2Fthe-rust-book-chapters-15-and-16", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Futhbees%2Fthe-rust-book-chapters-15-and-16'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 076b12e741feb4a9a7bed37fca377904b1f89b17
[INFO] testing uthbees/the-rust-book-chapters-15-and-16 against master#552a959051cebf8f88a8f558399baf733bec9ce0 for pr-136932
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Futhbees%2Fthe-rust-book-chapters-15-and-16" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/uthbees/the-rust-book-chapters-15-and-16 on toolchain 552a959051cebf8f88a8f558399baf733bec9ce0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+552a959051cebf8f88a8f558399baf733bec9ce0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/uthbees/the-rust-book-chapters-15-and-16
[INFO] finished tweaking git repo https://github.com/uthbees/the-rust-book-chapters-15-and-16
[INFO] tweaked toml for git repo https://github.com/uthbees/the-rust-book-chapters-15-and-16 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/uthbees/the-rust-book-chapters-15-and-16 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" "+552a959051cebf8f88a8f558399baf733bec9ce0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rand_chacha v0.9.0-alpha.2
[INFO] [stderr]   Downloaded rand v0.9.0-alpha.2
[INFO] [stderr]   Downloaded rand_core v0.9.0-alpha.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+552a959051cebf8f88a8f558399baf733bec9ce0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bd69b9672236694334a8ad7227a2cd8570f2b4c9efb5836ee61b404384ac98db
[INFO] running `Command { std: "docker" "start" "-a" "bd69b9672236694334a8ad7227a2cd8570f2b4c9efb5836ee61b404384ac98db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bd69b9672236694334a8ad7227a2cd8570f2b4c9efb5836ee61b404384ac98db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bd69b9672236694334a8ad7227a2cd8570f2b4c9efb5836ee61b404384ac98db", kill_on_drop: false }`
[INFO] [stdout] bd69b9672236694334a8ad7227a2cd8570f2b4c9efb5836ee61b404384ac98db
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+552a959051cebf8f88a8f558399baf733bec9ce0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e8f9e688d752bfaee7c311e5c5ceceae8fa5df333b67887b440edbf00e111e83
[INFO] running `Command { std: "docker" "start" "-a" "e8f9e688d752bfaee7c311e5c5ceceae8fa5df333b67887b440edbf00e111e83", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.89
[INFO] [stderr]    Compiling unicode-ident v1.0.13
[INFO] [stderr]    Compiling libc v0.2.162
[INFO] [stderr]    Compiling byteorder v1.5.0
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling arrayvec v0.7.6
[INFO] [stderr]    Compiling itoa v1.0.11
[INFO] [stderr]    Compiling linked-lists v0.1.0 (/opt/rustwide/workdir/lib/linked-lists)
[INFO] [stderr]    Compiling num-format v0.4.4
[INFO] [stderr]    Compiling quote v1.0.37
[INFO] [stderr]    Compiling getrandom v0.2.15
[INFO] [stderr]    Compiling syn v2.0.87
[INFO] [stderr]    Compiling zerocopy-derive v0.7.35
[INFO] [stderr]    Compiling zerocopy v0.7.35
[INFO] [stderr]    Compiling rand_core v0.9.0-alpha.2
[INFO] [stderr]    Compiling ppv-lite86 v0.2.20
[INFO] [stderr]    Compiling rand_chacha v0.9.0-alpha.2
[INFO] [stderr]    Compiling rand v0.9.0-alpha.2
[INFO] [stderr]    Compiling the-rust-book-chapters-15-and-16 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 10.97s
[INFO] running `Command { std: "docker" "inspect" "e8f9e688d752bfaee7c311e5c5ceceae8fa5df333b67887b440edbf00e111e83", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e8f9e688d752bfaee7c311e5c5ceceae8fa5df333b67887b440edbf00e111e83", kill_on_drop: false }`
[INFO] [stdout] e8f9e688d752bfaee7c311e5c5ceceae8fa5df333b67887b440edbf00e111e83
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+552a959051cebf8f88a8f558399baf733bec9ce0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 207cb2860b3528ad2530d121dec76b335fc03188440cea5a8e423823b8383d8e
[INFO] running `Command { std: "docker" "start" "-a" "207cb2860b3528ad2530d121dec76b335fc03188440cea5a8e423823b8383d8e", kill_on_drop: false }`
[INFO] [stderr]    Compiling the-rust-book-chapters-15-and-16 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.51s
[INFO] running `Command { std: "docker" "inspect" "207cb2860b3528ad2530d121dec76b335fc03188440cea5a8e423823b8383d8e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "207cb2860b3528ad2530d121dec76b335fc03188440cea5a8e423823b8383d8e", kill_on_drop: false }`
[INFO] [stdout] 207cb2860b3528ad2530d121dec76b335fc03188440cea5a8e423823b8383d8e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+552a959051cebf8f88a8f558399baf733bec9ce0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 44502eca88172d9eb91d12e5b6c76b935f20fd2b44c00f2eb930dd3dd806e15b
[INFO] running `Command { std: "docker" "start" "-a" "44502eca88172d9eb91d12e5b6c76b935f20fd2b44c00f2eb930dd3dd806e15b", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/the_rust_book_chapters_15_and_16-aac866c85ccff812)
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/the_rust_book_chapters_15_and_16-0349ddb996dc4cdb)
[INFO] [stderr]    Doc-tests the_rust_book_chapters_15_and_16
[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] [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] [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" "44502eca88172d9eb91d12e5b6c76b935f20fd2b44c00f2eb930dd3dd806e15b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "44502eca88172d9eb91d12e5b6c76b935f20fd2b44c00f2eb930dd3dd806e15b", kill_on_drop: false }`
[INFO] [stdout] 44502eca88172d9eb91d12e5b6c76b935f20fd2b44c00f2eb930dd3dd806e15b