[INFO] fetching crate mod_exp 1.0.1...
[INFO] testing mod_exp-1.0.1 against beta-2021-09-08 for beta-1.56-1
[INFO] extracting crate mod_exp 1.0.1 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate mod_exp 1.0.1 on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate mod_exp 1.0.1
[INFO] finished tweaking crates.io crate mod_exp 1.0.1
[INFO] tweaked toml for crates.io crate mod_exp 1.0.1 written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e376b2a757e2bc727d9f1586ee9e26488ebd60b00c76ca8655fd05864b2707a6
[INFO] running `Command { std: "docker" "start" "-a" "e376b2a757e2bc727d9f1586ee9e26488ebd60b00c76ca8655fd05864b2707a6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e376b2a757e2bc727d9f1586ee9e26488ebd60b00c76ca8655fd05864b2707a6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e376b2a757e2bc727d9f1586ee9e26488ebd60b00c76ca8655fd05864b2707a6", kill_on_drop: false }`
[INFO] [stdout] e376b2a757e2bc727d9f1586ee9e26488ebd60b00c76ca8655fd05864b2707a6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8ebbe04edde47ae4cc14960a452ed1f893a9c6ec44fe9e6b5170c5ab6f6c001d
[INFO] running `Command { std: "docker" "start" "-a" "8ebbe04edde47ae4cc14960a452ed1f893a9c6ec44fe9e6b5170c5ab6f6c001d", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]    Compiling num-rational v0.2.4
[INFO] [stderr]    Compiling num v0.2.1
[INFO] [stderr]    Compiling mod_exp v1.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 10.36s
[INFO] running `Command { std: "docker" "inspect" "8ebbe04edde47ae4cc14960a452ed1f893a9c6ec44fe9e6b5170c5ab6f6c001d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8ebbe04edde47ae4cc14960a452ed1f893a9c6ec44fe9e6b5170c5ab6f6c001d", kill_on_drop: false }`
[INFO] [stdout] 8ebbe04edde47ae4cc14960a452ed1f893a9c6ec44fe9e6b5170c5ab6f6c001d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 98ec24c881d2786996faa7f1fc74d7cbfb85631274edc3a3c130d7f7cbc93605
[INFO] running `Command { std: "docker" "start" "-a" "98ec24c881d2786996faa7f1fc74d7cbfb85631274edc3a3c130d7f7cbc93605", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling mod_exp v1.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.57s
[INFO] running `Command { std: "docker" "inspect" "98ec24c881d2786996faa7f1fc74d7cbfb85631274edc3a3c130d7f7cbc93605", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "98ec24c881d2786996faa7f1fc74d7cbfb85631274edc3a3c130d7f7cbc93605", kill_on_drop: false }`
[INFO] [stdout] 98ec24c881d2786996faa7f1fc74d7cbfb85631274edc3a3c130d7f7cbc93605
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 57e07006c5c03ee0d480c4d6db2de9a30ca46353eed66e5487581fc77b069f13
[INFO] running `Command { std: "docker" "start" "-a" "57e07006c5c03ee0d480c4d6db2de9a30ca46353eed66e5487581fc77b069f13", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/mod_exp-f96c7234f202c028)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test tests::test_mod_exp ... ok
[INFO] [stdout] test tests::test_overflow_lhs ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.02s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests mod_exp
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs - mod_exp (line 27) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.33s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "57e07006c5c03ee0d480c4d6db2de9a30ca46353eed66e5487581fc77b069f13", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "57e07006c5c03ee0d480c4d6db2de9a30ca46353eed66e5487581fc77b069f13", kill_on_drop: false }`
[INFO] [stdout] 57e07006c5c03ee0d480c4d6db2de9a30ca46353eed66e5487581fc77b069f13