[INFO] cloning repository https://github.com/jtempest/rust_book_exercises
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jtempest/rust_book_exercises" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjtempest%2Frust_book_exercises", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjtempest%2Frust_book_exercises'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 23b10de80673adaee05523125cf3695738c31e09
[INFO] testing jtempest/rust_book_exercises against try#8262275854dc0e5381c9d42d56257d94932c5a87 for pr-90799
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjtempest%2Frust_book_exercises" "/workspace/builds/worker-14/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-14/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jtempest/rust_book_exercises on toolchain 8262275854dc0e5381c9d42d56257d94932c5a87
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/jtempest/rust_book_exercises
[INFO] finished tweaking git repo https://github.com/jtempest/rust_book_exercises
[INFO] tweaked toml for git repo https://github.com/jtempest/rust_book_exercises written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate git repo https://github.com/jtempest/rust_book_exercises already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 782738301d71bfed56dabecbc553260af8ec5343867e02051b42cfe3433b2648
[INFO] running `Command { std: "docker" "start" "-a" "782738301d71bfed56dabecbc553260af8ec5343867e02051b42cfe3433b2648", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "782738301d71bfed56dabecbc553260af8ec5343867e02051b42cfe3433b2648", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "782738301d71bfed56dabecbc553260af8ec5343867e02051b42cfe3433b2648", kill_on_drop: false }`
[INFO] [stdout] 782738301d71bfed56dabecbc553260af8ec5343867e02051b42cfe3433b2648
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8c71fb692d5501e713bb25e37419396f627c90a1532406ddde81d51ea485ddb6
[INFO] running `Command { std: "docker" "start" "-a" "8c71fb692d5501e713bb25e37419396f627c90a1532406ddde81d51ea485ddb6", 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] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling libc v0.2.68
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling ppv-lite86 v0.2.6
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling regex-syntax v0.6.17
[INFO] [stderr]    Compiling webserver v0.1.0 (/opt/rustwide/workdir/webserver)
[INFO] [stderr]    Compiling unicode-segmentation v1.6.0
[INFO] [stderr]    Compiling once_cell v1.3.1
[INFO] [stderr]    Compiling two_threads v0.1.0 (/opt/rustwide/workdir/threads)
[INFO] [stderr]    Compiling twelve_days v0.1.0 (/opt/rustwide/workdir/twelve_days)
[INFO] [stderr]    Compiling thread_local v1.0.1
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]    Compiling num-integer v0.1.42
[INFO] [stderr]    Compiling num-bigint v0.2.6
[INFO] [stderr]    Compiling num-iter v0.1.40
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]    Compiling num-rational v0.2.4
[INFO] [stderr]    Compiling aho-corasick v0.7.10
[INFO] [stderr]    Compiling pig_latin v0.1.0 (/opt/rustwide/workdir/pig_latin)
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling regex v1.3.6
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling num v0.2.1
[INFO] [stderr]    Compiling guessing v0.1.0 (/opt/rustwide/workdir/guessing)
[INFO] [stderr]    Compiling averages v0.1.0 (/opt/rustwide/workdir/averages)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 29s
[INFO] running `Command { std: "docker" "inspect" "8c71fb692d5501e713bb25e37419396f627c90a1532406ddde81d51ea485ddb6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8c71fb692d5501e713bb25e37419396f627c90a1532406ddde81d51ea485ddb6", kill_on_drop: false }`
[INFO] [stdout] 8c71fb692d5501e713bb25e37419396f627c90a1532406ddde81d51ea485ddb6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] efd77158eb107470ddf7f7c8c4dedbb9c15a4addb6464d75b12e2e3bcba89350
[INFO] running `Command { std: "docker" "start" "-a" "efd77158eb107470ddf7f7c8c4dedbb9c15a4addb6464d75b12e2e3bcba89350", kill_on_drop: false }`
[INFO] [stderr]    Compiling two_threads v0.1.0 (/opt/rustwide/workdir/threads)
[INFO] [stderr]    Compiling webserver v0.1.0 (/opt/rustwide/workdir/webserver)
[INFO] [stderr]    Compiling twelve_days v0.1.0 (/opt/rustwide/workdir/twelve_days)
[INFO] [stderr]    Compiling pig_latin v0.1.0 (/opt/rustwide/workdir/pig_latin)
[INFO] [stderr]    Compiling guessing v0.1.0 (/opt/rustwide/workdir/guessing)
[INFO] [stderr]    Compiling averages v0.1.0 (/opt/rustwide/workdir/averages)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.69s
[INFO] running `Command { std: "docker" "inspect" "efd77158eb107470ddf7f7c8c4dedbb9c15a4addb6464d75b12e2e3bcba89350", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "efd77158eb107470ddf7f7c8c4dedbb9c15a4addb6464d75b12e2e3bcba89350", kill_on_drop: false }`
[INFO] [stdout] efd77158eb107470ddf7f7c8c4dedbb9c15a4addb6464d75b12e2e3bcba89350
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 42909ca2126a9dee119b5440a33a0cf4fd31de3ace9db73540e66af372e1ebb3
[INFO] running `Command { std: "docker" "start" "-a" "42909ca2126a9dee119b5440a33a0cf4fd31de3ace9db73540e66af372e1ebb3", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.61s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/averages-653bdc10abf55808)
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test test_mean ... ok
[INFO] [stdout] test test_median ... ok
[INFO] [stdout] test test_parity_cmp ... ok
[INFO] [stdout] test test_mode ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/guessing-9f7618c31c45eecf)
[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 (/opt/rustwide/target/debug/deps/pig_latin-5a3791df1ecba66f)
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/twelve_days-3c642e0050d51c14)
[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] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/two_threads-5a5281d235ab9f5a)
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/webserver-b6b8e7ac763226d9)
[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] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/main-8ab37fc9c54e838c)
[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] [stderr]    Doc-tests webserver
[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" "42909ca2126a9dee119b5440a33a0cf4fd31de3ace9db73540e66af372e1ebb3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "42909ca2126a9dee119b5440a33a0cf4fd31de3ace9db73540e66af372e1ebb3", kill_on_drop: false }`
[INFO] [stdout] 42909ca2126a9dee119b5440a33a0cf4fd31de3ace9db73540e66af372e1ebb3