[INFO] fetching crate thesis 0.5.1...
[INFO] testing thesis-0.5.1 against 1.55.0 for beta-1.56-1
[INFO] extracting crate thesis 0.5.1 into /workspace/builds/worker-50/source
[INFO] validating manifest of crates.io crate thesis 0.5.1 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate thesis 0.5.1
[INFO] finished tweaking crates.io crate thesis 0.5.1
[INFO] tweaked toml for crates.io crate thesis 0.5.1 written to /workspace/builds/worker-50/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded metrics-core v0.5.2
[INFO] [stderr]   Downloaded metrics v0.12.1
[INFO] [stderr]   Downloaded tokio-test v0.4.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-50/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-50/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" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 54971961323ffa7cdf5fbadb61bb3809aff7306cfbbb6b57c6a2270a5b4d8539
[INFO] running `Command { std: "docker" "start" "-a" "54971961323ffa7cdf5fbadb61bb3809aff7306cfbbb6b57c6a2270a5b4d8539", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "54971961323ffa7cdf5fbadb61bb3809aff7306cfbbb6b57c6a2270a5b4d8539", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "54971961323ffa7cdf5fbadb61bb3809aff7306cfbbb6b57c6a2270a5b4d8539", kill_on_drop: false }`
[INFO] [stdout] 54971961323ffa7cdf5fbadb61bb3809aff7306cfbbb6b57c6a2270a5b4d8539
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-50/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-50/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" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2a6f4b40957c36ee70f2769f907cd38c9f729c9cbefd570cb9028d2a898732d9
[INFO] running `Command { std: "docker" "start" "-a" "2a6f4b40957c36ee70f2769f907cd38c9f729c9cbefd570cb9028d2a898732d9", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.76
[INFO] [stderr]    Compiling libc v0.2.101
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]    Compiling pin-project-lite v0.2.7
[INFO] [stderr]    Compiling metrics v0.12.1
[INFO] [stderr]    Compiling metrics-core v0.5.2
[INFO] [stderr]    Compiling tokio v1.11.0
[INFO] [stderr]    Compiling tracing-core v0.1.19
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling pin-project-internal v1.0.8
[INFO] [stderr]    Compiling tracing-attributes v0.1.15
[INFO] [stderr]    Compiling tokio-macros v1.3.0
[INFO] [stderr]    Compiling tracing v0.1.26
[INFO] [stderr]    Compiling pin-project v1.0.8
[INFO] [stderr]    Compiling tracing-futures v0.2.5
[INFO] [stderr]    Compiling thesis v0.5.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 19.76s
[INFO] running `Command { std: "docker" "inspect" "2a6f4b40957c36ee70f2769f907cd38c9f729c9cbefd570cb9028d2a898732d9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2a6f4b40957c36ee70f2769f907cd38c9f729c9cbefd570cb9028d2a898732d9", kill_on_drop: false }`
[INFO] [stdout] 2a6f4b40957c36ee70f2769f907cd38c9f729c9cbefd570cb9028d2a898732d9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-50/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-50/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" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 66abfe6bc50afb7b9e30568416bcae66a260ed7a9e903775bee037fdaeae4149
[INFO] running `Command { std: "docker" "start" "-a" "66abfe6bc50afb7b9e30568416bcae66a260ed7a9e903775bee037fdaeae4149", kill_on_drop: false }`
[INFO] [stderr]    Compiling futures-core v0.3.17
[INFO] [stderr]    Compiling bytes v1.1.0
[INFO] [stderr]    Compiling async-stream-impl v0.3.2
[INFO] [stderr]    Compiling tokio-stream v0.1.7
[INFO] [stderr]    Compiling async-stream v0.3.2
[INFO] [stderr]    Compiling tokio-test v0.4.2
[INFO] [stderr]    Compiling thesis v0.5.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 4.87s
[INFO] running `Command { std: "docker" "inspect" "66abfe6bc50afb7b9e30568416bcae66a260ed7a9e903775bee037fdaeae4149", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "66abfe6bc50afb7b9e30568416bcae66a260ed7a9e903775bee037fdaeae4149", kill_on_drop: false }`
[INFO] [stdout] 66abfe6bc50afb7b9e30568416bcae66a260ed7a9e903775bee037fdaeae4149
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-50/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-50/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" "+1.55.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] e2ef2b5f3972f7ea910fc9287869c6f9f643ea7f5dddbc37311c2816978f24df
[INFO] running `Command { std: "docker" "start" "-a" "e2ef2b5f3972f7ea910fc9287869c6f9f643ea7f5dddbc37311c2816978f24df", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.19s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/thesis-21389b633d2fbe93)
[INFO] [stdout] 
[INFO] [stdout] running 7 tests
[INFO] [stdout] test experiment::tests::it_calls_mismatch_when_control_errs_and_experiment_is_ok ... ok
[INFO] [stdout] test experiment::tests::it_resolves_conflict_with_mismatch ... ok
[INFO] [stdout] test experiment::tests::it_falls_back_to_control_when_experimental_fails ... ok
[INFO] [stdout] test experiment::tests::it_works_with_non_partialeq_errs ... ok
[INFO] [stdout] test experiment::tests::it_works_with_results ... ok
[INFO] [stdout] test experiment::tests::test_experiment_is_send ... ok
[INFO] [stdout] test experiment::tests::it_rolls_out_correctly ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 7 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.03s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests thesis
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs - (line 15) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 1.61s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "e2ef2b5f3972f7ea910fc9287869c6f9f643ea7f5dddbc37311c2816978f24df", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e2ef2b5f3972f7ea910fc9287869c6f9f643ea7f5dddbc37311c2816978f24df", kill_on_drop: false }`
[INFO] [stdout] e2ef2b5f3972f7ea910fc9287869c6f9f643ea7f5dddbc37311c2816978f24df