[INFO] fetching crate scientisto 0.3.0...
[INFO] testing scientisto-0.3.0 against try#2440211fe03bc45c89b6dc1a3df18382ce91e32b for pr-146098-1
[INFO] extracting crate scientisto 0.3.0 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate scientisto 0.3.0
[INFO] finished tweaking crates.io crate scientisto 0.3.0
[INFO] tweaked toml for crates.io crate scientisto 0.3.0 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate scientisto 0.3.0 on toolchain 2440211fe03bc45c89b6dc1a3df18382ce91e32b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2440211fe03bc45c89b6dc1a3df18382ce91e32b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2440211fe03bc45c89b6dc1a3df18382ce91e32b" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 67 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2440211fe03bc45c89b6dc1a3df18382ce91e32b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+2440211fe03bc45c89b6dc1a3df18382ce91e32b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8d515d376aafcd62218c8f83f5e661d0ce1339dedb01476d49c406dce6b21206
[INFO] running `Command { std: "docker" "start" "-a" "8d515d376aafcd62218c8f83f5e661d0ce1339dedb01476d49c406dce6b21206", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8d515d376aafcd62218c8f83f5e661d0ce1339dedb01476d49c406dce6b21206", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8d515d376aafcd62218c8f83f5e661d0ce1339dedb01476d49c406dce6b21206", kill_on_drop: false }`
[INFO] [stdout] 8d515d376aafcd62218c8f83f5e661d0ce1339dedb01476d49c406dce6b21206
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+2440211fe03bc45c89b6dc1a3df18382ce91e32b" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2ee842c8b8066528b44d943f3a32f8d93e0ae821d55cf2559136f577e3c3fbb5
[INFO] running `Command { std: "docker" "start" "-a" "2ee842c8b8066528b44d943f3a32f8d93e0ae821d55cf2559136f577e3c3fbb5", kill_on_drop: false }`
[INFO] [stderr]    Compiling scientisto v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.45s
[INFO] running `Command { std: "docker" "inspect" "2ee842c8b8066528b44d943f3a32f8d93e0ae821d55cf2559136f577e3c3fbb5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2ee842c8b8066528b44d943f3a32f8d93e0ae821d55cf2559136f577e3c3fbb5", kill_on_drop: false }`
[INFO] [stdout] 2ee842c8b8066528b44d943f3a32f8d93e0ae821d55cf2559136f577e3c3fbb5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+2440211fe03bc45c89b6dc1a3df18382ce91e32b" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 85bf46c84daec1fbbbe5c1896a91d5fc9a7e45daab39e43d50619a54f0e213e2
[INFO] running `Command { std: "docker" "start" "-a" "85bf46c84daec1fbbbe5c1896a91d5fc9a7e45daab39e43d50619a54f0e213e2", kill_on_drop: false }`
[INFO] [stderr]    Compiling futures-channel v0.3.31
[INFO] [stderr]    Compiling rustix v1.1.2
[INFO] [stderr]    Compiling log v0.4.28
[INFO] [stderr]    Compiling syn v2.0.106
[INFO] [stderr]    Compiling event-listener v5.4.1
[INFO] [stderr]    Compiling async-attributes v1.1.2
[INFO] [stderr]    Compiling kv-log-macro v1.0.7
[INFO] [stderr]    Compiling event-listener-strategy v0.5.4
[INFO] [stderr]    Compiling async-channel v2.5.0
[INFO] [stderr]    Compiling async-lock v3.4.1
[INFO] [stderr]    Compiling blocking v1.6.2
[INFO] [stderr]    Compiling futures-macro v0.3.31
[INFO] [stderr]    Compiling tracing-attributes v0.1.30
[INFO] [stderr]    Compiling polling v3.11.0
[INFO] [stderr]    Compiling async-io v2.6.0
[INFO] [stderr]    Compiling futures-util v0.3.31
[INFO] [stderr]    Compiling tracing v0.1.41
[INFO] [stderr]    Compiling async-global-executor v2.4.1
[INFO] [stderr]    Compiling async-std v1.13.2
[INFO] [stderr]    Compiling futures-executor v0.3.31
[INFO] [stderr]    Compiling futures v0.3.31
[INFO] [stderr]    Compiling scientisto v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 16.25s
[INFO] running `Command { std: "docker" "inspect" "85bf46c84daec1fbbbe5c1896a91d5fc9a7e45daab39e43d50619a54f0e213e2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "85bf46c84daec1fbbbe5c1896a91d5fc9a7e45daab39e43d50619a54f0e213e2", kill_on_drop: false }`
[INFO] [stdout] 85bf46c84daec1fbbbe5c1896a91d5fc9a7e45daab39e43d50619a54f0e213e2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+2440211fe03bc45c89b6dc1a3df18382ce91e32b" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 8644f3efe084e2116acc6e6f35444772ae971a9cd7e84bbfa3e48a9815275f06
[INFO] running `Command { std: "docker" "start" "-a" "8644f3efe084e2116acc6e6f35444772ae971a9cd7e84bbfa3e48a9815275f06", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.11s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/scientisto-e667cc762fbf3bba)
[INFO] [stdout] 
[INFO] [stdout] running 27 tests
[INFO] [stdout] test async_experiment::tests::async_experiment_should_return_name_if_control_and_experiment_are_fully_specified ... ok
[INFO] [stdout] test async_experiment::tests::async_experiment_should_return_name_with_control_specified ... ok
[INFO] [stdout] test async_experiment::tests::experiment_should_panic_on_empty_string_name - should panic ... ok
[INFO] [stdout] test observation::tests::observation_should_indicate_matching_when_comparable_types_have_matching_values ... ok
[INFO] [stdout] test async_experiment::tests::async_experiment_should_return_name_if_it_is_valid ... ok
[INFO] [stdout] test observation::tests::observation_should_indicate_non_matching_when_non_matching_result_values_are_measured ... ok
[INFO] [stdout] test observation::tests::observation_should_indicate_non_matching_when_comparable_types_have_non_matching_values ... ok
[INFO] [stdout] test sync_experiment::tests::experiment_should_always_return_the_control_value ... ok
[INFO] [stdout] test sync_experiment::tests::experiment_should_not_run_the_experiment_if_conditioned_not_to ... ok
[INFO] [stdout] test sync_experiment::tests::experiment_should_panic_if_control_panics - should panic ... ok
[INFO] [stdout] test sync_experiment::tests::experiment_should_panic_on_empty_string_name - should panic ... ok
[INFO] [stdout] test sync_experiment::tests::experiment_should_publish_the_results_when_publish_method_is_specified ... ok
[INFO] [stdout] test sync_experiment::tests::experiment_should_return_name_if_control_and_experiment_are_fully_specified ... ok
[INFO] [stdout] test sync_experiment::tests::experiment_should_return_name_if_it_is_valid ... ok
[INFO] [stdout] test sync_experiment::tests::experiment_should_work_with_different_return_types_if_they_are_comparable ... ok
[INFO] [stdout] test sync_experiment::tests::experiment_should_derive_the_debug_trait ... ok
[INFO] [stdout] test observation::tests::observation_should_derive_the_debug_trait ... ok
[INFO] [stdout] test sync_experiment::tests::experiment_should_return_control_value_if_the_experiment_value_is_different ... ok
[INFO] [stdout] test sync_experiment::tests::experiment_should_return_name_with_control_specified ... ok
[INFO] [stdout] test sync_experiment::tests::experiment_should_return_control_value_if_the_experiment_panics ... ok
[INFO] [stdout] test async_experiment::tests::async_experiment_should_always_return_the_control_value ... ok
[INFO] [stdout] test async_experiment::tests::async_experiment_should_not_run_the_experiment_if_conditioned_not_to ... ok
[INFO] [stdout] test async_experiment::tests::async_experiment_should_publish_the_results_when_publish_method_is_specified ... ok
[INFO] [stdout] test async_experiment::tests::async_experiment_should_return_control_value_if_the_experiment_value_is_different ... ok
[INFO] [stdout] test async_experiment::tests::async_experiment_should_work_with_different_return_types_if_they_are_comparable ... ok
[INFO] [stdout] test async_experiment::tests::experiment_should_derive_the_debug_trait ... ok
[INFO] [stdout] test async_experiment::tests::async_experiment_should_panic_if_control_panics - should panic ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 27 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.03s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests scientisto
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test src/sync_experiment.rs - sync_experiment::Executable (line 29) ... ok
[INFO] [stdout] test src/lib.rs - (line 9) ... ok
[INFO] [stdout] test src/sync_experiment.rs - sync_experiment::Executable (line 43) ... ok
[INFO] [stdout] test src/async_experiment.rs - async_experiment::AsyncExperiment (line 42) ... ok
[INFO] [stdout] test src/lib.rs - (line 24) ... ok
[INFO] [stdout] test src/async_experiment.rs - async_experiment::AsyncExperiment (line 26) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 1.15s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "8644f3efe084e2116acc6e6f35444772ae971a9cd7e84bbfa3e48a9815275f06", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8644f3efe084e2116acc6e6f35444772ae971a9cd7e84bbfa3e48a9815275f06", kill_on_drop: false }`
[INFO] [stdout] 8644f3efe084e2116acc6e6f35444772ae971a9cd7e84bbfa3e48a9815275f06