[INFO] fetching crate flips 0.2.1...
[INFO] testing flips-0.2.1 against beta-2021-09-08 for beta-1.56-1
[INFO] extracting crate flips 0.2.1 into /workspace/builds/worker-53/source
[INFO] validating manifest of crates.io crate flips 0.2.1 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 flips 0.2.1
[INFO] finished tweaking crates.io crate flips 0.2.1
[INFO] tweaked toml for crates.io crate flips 0.2.1 written to /workspace/builds/worker-53/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] [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-53/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-53/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] abc480eadfae4065e9c356151f88c3f9ed17f73537e767f52970ad33bc9a5e59
[INFO] running `Command { std: "docker" "start" "-a" "abc480eadfae4065e9c356151f88c3f9ed17f73537e767f52970ad33bc9a5e59", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "abc480eadfae4065e9c356151f88c3f9ed17f73537e767f52970ad33bc9a5e59", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "abc480eadfae4065e9c356151f88c3f9ed17f73537e767f52970ad33bc9a5e59", kill_on_drop: false }`
[INFO] [stdout] abc480eadfae4065e9c356151f88c3f9ed17f73537e767f52970ad33bc9a5e59
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-53/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-53/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] a07fd61c496ab1de344f24ef64ee3aa4d640639e674c75b90e86f77fa9ea2a89
[INFO] running `Command { std: "docker" "start" "-a" "a07fd61c496ab1de344f24ef64ee3aa4d640639e674c75b90e86f77fa9ea2a89", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling proc-macro2 v1.0.29
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling rustversion v1.0.5
[INFO] [stderr]    Compiling syn v1.0.76
[INFO] [stderr]    Compiling cc v1.0.70
[INFO] [stderr]    Compiling libc v0.2.101
[INFO] [stderr]    Compiling crc32fast v1.2.1
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling flips-sys v0.2.1
[INFO] [stderr]    Compiling err-derive v0.2.4
[INFO] [stderr]    Compiling synstructure v0.12.5
[INFO] [stderr]    Compiling flips v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 11.03s
[INFO] running `Command { std: "docker" "inspect" "a07fd61c496ab1de344f24ef64ee3aa4d640639e674c75b90e86f77fa9ea2a89", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a07fd61c496ab1de344f24ef64ee3aa4d640639e674c75b90e86f77fa9ea2a89", kill_on_drop: false }`
[INFO] [stdout] a07fd61c496ab1de344f24ef64ee3aa4d640639e674c75b90e86f77fa9ea2a89
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-53/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-53/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] 842cec469802e03f7a30f4315c90861363d43ca6e80232147f95ebc5a3c38042
[INFO] running `Command { std: "docker" "start" "-a" "842cec469802e03f7a30f4315c90861363d43ca6e80232147f95ebc5a3c38042", kill_on_drop: false }`
[INFO] [stderr]    Compiling flips v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.02s
[INFO] running `Command { std: "docker" "inspect" "842cec469802e03f7a30f4315c90861363d43ca6e80232147f95ebc5a3c38042", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "842cec469802e03f7a30f4315c90861363d43ca6e80232147f95ebc5a3c38042", kill_on_drop: false }`
[INFO] [stdout] 842cec469802e03f7a30f4315c90861363d43ca6e80232147f95ebc5a3c38042
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-53/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-53/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] 97e76b5b2daae246b203cd29ff860241076d1b207d6416b3a5bad34ce3df2c0c
[INFO] running `Command { std: "docker" "start" "-a" "97e76b5b2daae246b203cd29ff860241076d1b207d6416b3a5bad34ce3df2c0c", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.11s
[INFO] [stdout] running 0 tests
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/flips-6e848e8170fd2ab3)
[INFO] [stdout] 
[INFO] [stderr]      Running tests/test_bps.rs (/opt/rustwide/target/debug/deps/test_bps-fb0a71c24d8ae946)
[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 11 tests
[INFO] [stdout] test linear::test_create_missing_arguments ... ok
[INFO] [stdout] test test_apply_invalid ... ok
[INFO] [stdout] test delta::test_create_missing_arguments ... ok
[INFO] [stdout] test linear::test_create_identical ... ok
[INFO] [stdout] test linear::test_create_apply ... ok
[INFO] [stdout] test test_apply_to_output ... ok
[INFO] [stdout] test test_apply_correct ... ok
[INFO] [stdout] test test_apply_not_this ... ok
[INFO] [stdout] test delta::test_create_apply_with_moremem ... ok
[INFO] [stdout] test delta::test_create_apply ... ok
[INFO] [stdout] test delta::test_create_identical ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 11 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.15s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 9 tests
[INFO] [stderr]      Running tests/test_ips.rs (/opt/rustwide/target/debug/deps/test_ips-e329d9113b9f86b9)
[INFO] [stdout] test test_apply_correct ... ok
[INFO] [stdout] test test_apply_invalid ... ok
[INFO] [stdout] test test_apply_to_output ... ok
[INFO] [stdout] test test_study_apply_correct ... ok
[INFO] [stdout] test test_study_apply_to_output ... ok
[INFO] [stdout] test test_study_invalid ... ok
[INFO] [stdout] test test_create_identical ... ok
[INFO] [stdout] test test_create_apply ... ok
[INFO] [stdout] test test_create_missing_arguments ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 9 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.04s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/test_ups.rs (/opt/rustwide/target/debug/deps/test_ups-23028099b266e092)
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test test_apply_invalid ... ok
[INFO] [stdout] test test_apply_to_output ... ok
[INFO] [stdout] test test_apply_correct ... ok
[INFO] [stdout] test test_apply_not_this ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.02s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests flips
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test src/bps.rs - bps::BpsDeltaBuilder (line 193) ... ok
[INFO] [stdout] test src/bps.rs - bps::BpsLinearBuilder (line 101) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.57s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "97e76b5b2daae246b203cd29ff860241076d1b207d6416b3a5bad34ce3df2c0c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "97e76b5b2daae246b203cd29ff860241076d1b207d6416b3a5bad34ce3df2c0c", kill_on_drop: false }`
[INFO] [stdout] 97e76b5b2daae246b203cd29ff860241076d1b207d6416b3a5bad34ce3df2c0c