[INFO] fetching crate spaced-repetition 1.0.0...
[INFO] testing spaced-repetition-1.0.0 against 1.60.0 for beta-1.61-1
[INFO] extracting crate spaced-repetition 1.0.0 into /workspace/builds/worker-75/source
[INFO] validating manifest of crates.io crate spaced-repetition 1.0.0 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 crates.io crate spaced-repetition 1.0.0
[INFO] finished tweaking crates.io crate spaced-repetition 1.0.0
[INFO] tweaked toml for crates.io crate spaced-repetition 1.0.0 written to /workspace/builds/worker-75/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "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" "+1.60.0" "fetch" "--manifest-path" "Cargo.toml", 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-75/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-75/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] d4312f73e5453b941854b2c6276b7622479aa30495cc6025ac58d2a17c4f2826
[INFO] running `Command { std: "docker" "start" "-a" "d4312f73e5453b941854b2c6276b7622479aa30495cc6025ac58d2a17c4f2826", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d4312f73e5453b941854b2c6276b7622479aa30495cc6025ac58d2a17c4f2826", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d4312f73e5453b941854b2c6276b7622479aa30495cc6025ac58d2a17c4f2826", kill_on_drop: false }`
[INFO] [stdout] d4312f73e5453b941854b2c6276b7622479aa30495cc6025ac58d2a17c4f2826
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-75/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-75/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] 7048b72d1b7e7b7d4f0c823191427d6f46432debbc25770bb619177bc79bd75b
[INFO] running `Command { std: "docker" "start" "-a" "7048b72d1b7e7b7d4f0c823191427d6f46432debbc25770bb619177bc79bd75b", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.123
[INFO] [stderr]    Compiling libm v0.2.2
[INFO] [stderr]    Compiling ppv-lite86 v0.2.16
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling getrandom v0.2.6
[INFO] [stderr]    Compiling time v0.1.44
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling chrono v0.4.19
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling rand_distr v0.4.3
[INFO] [stderr]    Compiling spaced-repetition v1.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 10.08s
[INFO] running `Command { std: "docker" "inspect" "7048b72d1b7e7b7d4f0c823191427d6f46432debbc25770bb619177bc79bd75b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7048b72d1b7e7b7d4f0c823191427d6f46432debbc25770bb619177bc79bd75b", kill_on_drop: false }`
[INFO] [stdout] 7048b72d1b7e7b7d4f0c823191427d6f46432debbc25770bb619177bc79bd75b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-75/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-75/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] c885045712147476dbd91a4551df92a2deb77998527a5a7fdac9561091a31e83
[INFO] running `Command { std: "docker" "start" "-a" "c885045712147476dbd91a4551df92a2deb77998527a5a7fdac9561091a31e83", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling rand_distr v0.4.3
[INFO] [stderr]    Compiling spaced-repetition v1.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 7.67s
[INFO] running `Command { std: "docker" "inspect" "c885045712147476dbd91a4551df92a2deb77998527a5a7fdac9561091a31e83", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c885045712147476dbd91a4551df92a2deb77998527a5a7fdac9561091a31e83", kill_on_drop: false }`
[INFO] [stdout] c885045712147476dbd91a4551df92a2deb77998527a5a7fdac9561091a31e83
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-75/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-75/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] 03aee71b122d1f91544d17cf74b9d955a093f78ab2817d184be0eea0b8b49a7f
[INFO] running `Command { std: "docker" "start" "-a" "03aee71b122d1f91544d17cf74b9d955a093f78ab2817d184be0eea0b8b49a7f", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.40s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/spaced_repetition-f591223341feb42a)
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test tests::test_early_repetitions ... ok
[INFO] [stdout] test tests::test_learning_phase_normal ... ok
[INFO] [stdout] test tests::test_learning_phase_easy ... ok
[INFO] [stdout] test tests::test_learning_phase_hard ... ok
[INFO] [stdout] test tests::test_jitter ... ok
[INFO] [stdout] test tests::test_reviewing_phase ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests spaced-repetition
[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" "03aee71b122d1f91544d17cf74b9d955a093f78ab2817d184be0eea0b8b49a7f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "03aee71b122d1f91544d17cf74b9d955a093f78ab2817d184be0eea0b8b49a7f", kill_on_drop: false }`
[INFO] [stdout] 03aee71b122d1f91544d17cf74b9d955a093f78ab2817d184be0eea0b8b49a7f