[INFO] cloning repository https://github.com/osheng/rust_book_ex_8_3
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/osheng/rust_book_ex_8_3" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fosheng%2Frust_book_ex_8_3", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fosheng%2Frust_book_ex_8_3'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 26428fa99b1f8c0429a7a2e859b3a238cd53bf4d
[INFO] testing osheng/rust_book_ex_8_3 against 1.60.0 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fosheng%2Frust_book_ex_8_3" "/workspace/builds/worker-15/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-15/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/osheng/rust_book_ex_8_3 on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/osheng/rust_book_ex_8_3
[INFO] finished tweaking git repo https://github.com/osheng/rust_book_ex_8_3
[INFO] tweaked toml for git repo https://github.com/osheng/rust_book_ex_8_3 written to /workspace/builds/worker-15/source/Cargo.toml
[INFO] crate git repo https://github.com/osheng/rust_book_ex_8_3 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "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-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2c9e02c0bc21e102eac475b2f2221b1f1156a6e4d8d4ca767f7c954ee7676771
[INFO] running `Command { std: "docker" "start" "-a" "2c9e02c0bc21e102eac475b2f2221b1f1156a6e4d8d4ca767f7c954ee7676771", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2c9e02c0bc21e102eac475b2f2221b1f1156a6e4d8d4ca767f7c954ee7676771", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2c9e02c0bc21e102eac475b2f2221b1f1156a6e4d8d4ca767f7c954ee7676771", kill_on_drop: false }`
[INFO] [stdout] 2c9e02c0bc21e102eac475b2f2221b1f1156a6e4d8d4ca767f7c954ee7676771
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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" "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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fef6d1c64355d9d2a580eea4ae4dd4bd90c5315ae5380974f9c7c3f208aca803
[INFO] running `Command { std: "docker" "start" "-a" "fef6d1c64355d9d2a580eea4ae4dd4bd90c5315ae5380974f9c7c3f208aca803", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling rust_book_ex_8_3 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.28s
[INFO] running `Command { std: "docker" "inspect" "fef6d1c64355d9d2a580eea4ae4dd4bd90c5315ae5380974f9c7c3f208aca803", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fef6d1c64355d9d2a580eea4ae4dd4bd90c5315ae5380974f9c7c3f208aca803", kill_on_drop: false }`
[INFO] [stdout] fef6d1c64355d9d2a580eea4ae4dd4bd90c5315ae5380974f9c7c3f208aca803
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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" "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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c9b6c9ee77012c3570685ad06e404b8f93876a21fab31834ac1ccda609f60b96
[INFO] running `Command { std: "docker" "start" "-a" "c9b6c9ee77012c3570685ad06e404b8f93876a21fab31834ac1ccda609f60b96", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling rust_book_ex_8_3 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.32s
[INFO] running `Command { std: "docker" "inspect" "c9b6c9ee77012c3570685ad06e404b8f93876a21fab31834ac1ccda609f60b96", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c9b6c9ee77012c3570685ad06e404b8f93876a21fab31834ac1ccda609f60b96", kill_on_drop: false }`
[INFO] [stdout] c9b6c9ee77012c3570685ad06e404b8f93876a21fab31834ac1ccda609f60b96
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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" "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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 7c0d7f79ffdc01a7fe5394cd502a602e018e7559e426b5e1a59f809f60c95e11
[INFO] running `Command { std: "docker" "start" "-a" "7c0d7f79ffdc01a7fe5394cd502a602e018e7559e426b5e1a59f809f60c95e11", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/rust_book_ex_8_3-27a5d730897abd52)
[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" "7c0d7f79ffdc01a7fe5394cd502a602e018e7559e426b5e1a59f809f60c95e11", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7c0d7f79ffdc01a7fe5394cd502a602e018e7559e426b5e1a59f809f60c95e11", kill_on_drop: false }`
[INFO] [stdout] 7c0d7f79ffdc01a7fe5394cd502a602e018e7559e426b5e1a59f809f60c95e11