[INFO] fetching crate monarch 0.1.0...
[INFO] testing monarch-0.1.0 against master#a77da2d454e6caa227a85b16410b95f93495e7e0 for pr-91031
[INFO] extracting crate monarch 0.1.0 into /workspace/builds/worker-90/source
[INFO] validating manifest of crates.io crate monarch 0.1.0 on toolchain a77da2d454e6caa227a85b16410b95f93495e7e0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate monarch 0.1.0
[INFO] finished tweaking crates.io crate monarch 0.1.0
[INFO] tweaked toml for crates.io crate monarch 0.1.0 written to /workspace/builds/worker-90/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "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-90/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-90/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 04ca64d00e4a3dcb17fd8cfb4767f246fbdd263d11ff2183794f6c6e2be48fd2
[INFO] running `Command { std: "docker" "start" "-a" "04ca64d00e4a3dcb17fd8cfb4767f246fbdd263d11ff2183794f6c6e2be48fd2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "04ca64d00e4a3dcb17fd8cfb4767f246fbdd263d11ff2183794f6c6e2be48fd2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "04ca64d00e4a3dcb17fd8cfb4767f246fbdd263d11ff2183794f6c6e2be48fd2", kill_on_drop: false }`
[INFO] [stdout] 04ca64d00e4a3dcb17fd8cfb4767f246fbdd263d11ff2183794f6c6e2be48fd2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-90/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-90/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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0fad85c394f23a198a2fd5f8186ed0e4166fc485b80c9dfecbe1ce4064788593
[INFO] running `Command { std: "docker" "start" "-a" "0fad85c394f23a198a2fd5f8186ed0e4166fc485b80c9dfecbe1ce4064788593", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling monarch v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function is never used: `message`
[INFO] [stdout]   --> src/runner.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 |     fn message(&self) -> String {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.50s
[INFO] running `Command { std: "docker" "inspect" "0fad85c394f23a198a2fd5f8186ed0e4166fc485b80c9dfecbe1ce4064788593", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0fad85c394f23a198a2fd5f8186ed0e4166fc485b80c9dfecbe1ce4064788593", kill_on_drop: false }`
[INFO] [stdout] 0fad85c394f23a198a2fd5f8186ed0e4166fc485b80c9dfecbe1ce4064788593
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-90/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-90/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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8875bd7a4798d3de33e31bd8956b75ce2b75f6aea9c968a40386db5440e59e3e
[INFO] running `Command { std: "docker" "start" "-a" "8875bd7a4798d3de33e31bd8956b75ce2b75f6aea9c968a40386db5440e59e3e", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.108
[INFO] [stderr]    Compiling quick-error v1.2.3
[INFO] [stderr]    Compiling bit-vec v0.6.3
[INFO] [stderr]    Compiling fnv v1.0.7
[INFO] [stderr]    Compiling byteorder v1.4.3
[INFO] [stderr]    Compiling regex-syntax v0.6.25
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stdout] warning: associated function is never used: `message`
[INFO] [stdout]   --> src/runner.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 |     fn message(&self) -> String {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling bit-set v0.5.2
[INFO] [stderr]    Compiling getrandom v0.2.3
[INFO] [stderr]    Compiling rand_os v0.1.3
[INFO] [stderr]    Compiling wait-timeout v0.2.0
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.4
[INFO] [stderr]    Compiling tempfile v3.2.0
[INFO] [stderr]    Compiling rusty-fork v0.2.2
[INFO] [stderr]    Compiling proptest v0.9.6
[INFO] [stderr]    Compiling monarch v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `orig`
[INFO] [stdout]    --> src/runner.rs:409:31
[INFO] [stdout]     |
[INFO] [stdout] 409 |         runner.set_relation(|&orig, &trans| {
[INFO] [stdout]     |                               ^^^^ help: if this is intentional, prefix it with an underscore: `_orig`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `message`
[INFO] [stdout]   --> src/runner.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 |     fn message(&self) -> String {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 10.28s
[INFO] running `Command { std: "docker" "inspect" "8875bd7a4798d3de33e31bd8956b75ce2b75f6aea9c968a40386db5440e59e3e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8875bd7a4798d3de33e31bd8956b75ce2b75f6aea9c968a40386db5440e59e3e", kill_on_drop: false }`
[INFO] [stdout] 8875bd7a4798d3de33e31bd8956b75ce2b75f6aea9c968a40386db5440e59e3e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-90/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-90/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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] e97f9419390921bdb5efe3b99223482e8c8481702874b8d2d61ff053ebd7a331
[INFO] running `Command { std: "docker" "start" "-a" "e97f9419390921bdb5efe3b99223482e8c8481702874b8d2d61ff053ebd7a331", kill_on_drop: false }`
[INFO] [stderr] warning: associated function is never used: `message`
[INFO] [stderr]   --> src/runner.rs:14:8
[INFO] [stderr]    |
[INFO] [stderr] 14 |     fn message(&self) -> String {
[INFO] [stderr]    |        ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `monarch` (lib) generated 1 warning
[INFO] [stderr] warning: unused variable: `orig`
[INFO] [stderr]    --> src/runner.rs:409:31
[INFO] [stderr]     |
[INFO] [stderr] 409 |         runner.set_relation(|&orig, &trans| {
[INFO] [stderr]     |                               ^^^^ help: if this is intentional, prefix it with an underscore: `_orig`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `monarch` (lib test) generated 2 warnings (1 duplicate)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.09s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/monarch-4cde986ae81d19bc)
[INFO] [stdout] 
[INFO] [stdout] running 13 tests
[INFO] [stdout] test runner::tests::error_when_k_is_zero ... ok
[INFO] [stdout] test runner::tests::it_completes_basic_test ... ok
[INFO] [stdout] test runner::tests::it_errors_when_relation_is_missing ... ok
[INFO] [stdout] test runner::tests::it_errors_when_operation_is_missing ... ok
[INFO] [stdout] test runner::tests::it_errors_when_transformations_are_missing ... ok
[INFO] [stdout] test runner::tests::it_errors_when_input_is_missing ... ok
[INFO] [stdout] test runner::tests::correctly_identifies_final_index_positions ... ok
[INFO] [stdout] test runner::tests::error_when_k_too_large ... ok
[INFO] [stdout] test runner::tests::error_when_list_is_empty ... ok
[INFO] [stdout] test runner::tests::catches_test_failure - should panic ... ok
[INFO] [stdout] test runner::tests::combinations_are_applied - should panic ... ok
[INFO] [stdout] test runner::tests::correctly_identifies_nonfinal_index_positions ... ok
[INFO] [stdout] test runner::tests::correct_num_combinations_produced ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 13 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 2.32s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests monarch
[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" "e97f9419390921bdb5efe3b99223482e8c8481702874b8d2d61ff053ebd7a331", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e97f9419390921bdb5efe3b99223482e8c8481702874b8d2d61ff053ebd7a331", kill_on_drop: false }`
[INFO] [stdout] e97f9419390921bdb5efe3b99223482e8c8481702874b8d2d61ff053ebd7a331