[INFO] cloning repository https://github.com/dmccrevan/priority-executor
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/dmccrevan/priority-executor" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdmccrevan%2Fpriority-executor", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdmccrevan%2Fpriority-executor'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 678b357e08d2a9caeac4562ca412c170b4cca9d3
[INFO] testing dmccrevan/priority-executor against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdmccrevan%2Fpriority-executor" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/dmccrevan/priority-executor 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 git repo https://github.com/dmccrevan/priority-executor
[INFO] finished tweaking git repo https://github.com/dmccrevan/priority-executor
[INFO] tweaked toml for git repo https://github.com/dmccrevan/priority-executor written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/dmccrevan/priority-executor already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded async-task v1.3.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 3c171b3ad581ca91c9305a0528a4d0b0a2315e14b0c844d1e31e621929395f24
[INFO] running `Command { std: "docker" "start" "-a" "3c171b3ad581ca91c9305a0528a4d0b0a2315e14b0c844d1e31e621929395f24", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3c171b3ad581ca91c9305a0528a4d0b0a2315e14b0c844d1e31e621929395f24", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3c171b3ad581ca91c9305a0528a4d0b0a2315e14b0c844d1e31e621929395f24", kill_on_drop: false }`
[INFO] [stdout] 3c171b3ad581ca91c9305a0528a4d0b0a2315e14b0c844d1e31e621929395f24
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] dad209b3a852c423ca46f30486a7d8d0dee2a9430b83f496629717cb4c39cc3d
[INFO] running `Command { std: "docker" "start" "-a" "dad209b3a852c423ca46f30486a7d8d0dee2a9430b83f496629717cb4c39cc3d", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.38
[INFO] [stderr]    Compiling async-task v1.3.1
[INFO] [stderr]    Compiling crossbeam-channel v0.4.3
[INFO] [stderr]    Compiling threadpool v1.8.1
[INFO] [stderr]    Compiling crossbeam v0.7.3
[INFO] [stderr]    Compiling pin-project-internal v0.4.23
[INFO] [stderr]    Compiling futures-macro v0.3.5
[INFO] [stderr]    Compiling pin-project v0.4.23
[INFO] [stderr]    Compiling futures-util v0.3.5
[INFO] [stderr]    Compiling futures-executor v0.3.5
[INFO] [stderr]    Compiling futures v0.3.5
[INFO] [stderr]    Compiling priority-executor v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::time`
[INFO] [stdout]   --> src/lib.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use std::time;
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::time`
[INFO] [stdout]   --> src/lib.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use std::time;
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` 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 21.67s
[INFO] running `Command { std: "docker" "inspect" "dad209b3a852c423ca46f30486a7d8d0dee2a9430b83f496629717cb4c39cc3d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dad209b3a852c423ca46f30486a7d8d0dee2a9430b83f496629717cb4c39cc3d", kill_on_drop: false }`
[INFO] [stdout] dad209b3a852c423ca46f30486a7d8d0dee2a9430b83f496629717cb4c39cc3d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] 633fe7740a5a17b734bb48f0e36463d043d75482aa33de2e933b009d25e91cfe
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "633fe7740a5a17b734bb48f0e36463d043d75482aa33de2e933b009d25e91cfe", kill_on_drop: false }`
[INFO] [stderr]    Compiling priority-executor v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::time`
[INFO] [stdout]   --> src/lib.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use std::time;
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]    --> src/lib.rs:153:18
[INFO] [stdout]     |
[INFO] [stdout] 153 |             let (a, b, c, d, e, f) =
[INFO] [stdout]     |                  ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]    --> src/lib.rs:153:21
[INFO] [stdout]     |
[INFO] [stdout] 153 |             let (a, b, c, d, e, f) =
[INFO] [stdout]     |                     ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c`
[INFO] [stdout]    --> src/lib.rs:153:24
[INFO] [stdout]     |
[INFO] [stdout] 153 |             let (a, b, c, d, e, f) =
[INFO] [stdout]     |                        ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `d`
[INFO] [stdout]    --> src/lib.rs:153:27
[INFO] [stdout]     |
[INFO] [stdout] 153 |             let (a, b, c, d, e, f) =
[INFO] [stdout]     |                           ^ help: if this is intentional, prefix it with an underscore: `_d`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]    --> src/lib.rs:153:30
[INFO] [stdout]     |
[INFO] [stdout] 153 |             let (a, b, c, d, e, f) =
[INFO] [stdout]     |                              ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]    --> src/lib.rs:153:33
[INFO] [stdout]     |
[INFO] [stdout] 153 |             let (a, b, c, d, e, f) =
[INFO] [stdout]     |                                 ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]    --> src/lib.rs:153:18
[INFO] [stdout]     |
[INFO] [stdout] 153 |             let (a, b, c, d, e, f) =
[INFO] [stdout]     |                  ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]    --> src/lib.rs:153:21
[INFO] [stdout]     |
[INFO] [stdout] 153 |             let (a, b, c, d, e, f) =
[INFO] [stdout]     |                     ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c`
[INFO] [stdout]    --> src/lib.rs:153:24
[INFO] [stdout]     |
[INFO] [stdout] 153 |             let (a, b, c, d, e, f) =
[INFO] [stdout]     |                        ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `d`
[INFO] [stdout]    --> src/lib.rs:153:27
[INFO] [stdout]     |
[INFO] [stdout] 153 |             let (a, b, c, d, e, f) =
[INFO] [stdout]     |                           ^ help: if this is intentional, prefix it with an underscore: `_d`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]    --> src/lib.rs:153:30
[INFO] [stdout]     |
[INFO] [stdout] 153 |             let (a, b, c, d, e, f) =
[INFO] [stdout]     |                              ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]    --> src/lib.rs:153:33
[INFO] [stdout]     |
[INFO] [stdout] 153 |             let (a, b, c, d, e, f) =
[INFO] [stdout]     |                                 ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.85s
[INFO] running `Command { std: "docker" "inspect" "633fe7740a5a17b734bb48f0e36463d043d75482aa33de2e933b009d25e91cfe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "633fe7740a5a17b734bb48f0e36463d043d75482aa33de2e933b009d25e91cfe", kill_on_drop: false }`
[INFO] [stdout] 633fe7740a5a17b734bb48f0e36463d043d75482aa33de2e933b009d25e91cfe
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] 6aaa19ddba9804e6cff574b6db34a844d2b55436ead42341e26e7d0b2309428f
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "6aaa19ddba9804e6cff574b6db34a844d2b55436ead42341e26e7d0b2309428f", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `std::time`
[INFO] [stderr]   --> src/lib.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 | use std::time;
[INFO] [stderr]    |     ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `a`
[INFO] [stderr]    --> src/lib.rs:153:18
[INFO] [stderr]     |
[INFO] [stderr] 153 |             let (a, b, c, d, e, f) =
[INFO] [stderr]     |                  ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `b`
[INFO] [stderr]    --> src/lib.rs:153:21
[INFO] [stderr]     |
[INFO] [stderr] 153 |             let (a, b, c, d, e, f) =
[INFO] [stderr]     |                     ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `c`
[INFO] [stderr]    --> src/lib.rs:153:24
[INFO] [stderr]     |
[INFO] [stderr] 153 |             let (a, b, c, d, e, f) =
[INFO] [stderr]     |                        ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `d`
[INFO] [stderr]    --> src/lib.rs:153:27
[INFO] [stderr]     |
[INFO] [stderr] 153 |             let (a, b, c, d, e, f) =
[INFO] [stderr]     |                           ^ help: if this is intentional, prefix it with an underscore: `_d`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `e`
[INFO] [stderr]    --> src/lib.rs:153:30
[INFO] [stderr]     |
[INFO] [stderr] 153 |             let (a, b, c, d, e, f) =
[INFO] [stderr]     |                              ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `f`
[INFO] [stderr]    --> src/lib.rs:153:33
[INFO] [stderr]     |
[INFO] [stderr] 153 |             let (a, b, c, d, e, f) =
[INFO] [stderr]     |                                 ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stderr] 
[INFO] [stderr] warning: `priority-executor` (lib) generated 1 warning
[INFO] [stderr] warning: `priority-executor` (lib test) generated 6 warnings
[INFO] [stderr] warning: `priority-executor` (bin "priority-executor" test) generated 6 warnings (6 duplicates)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/priority_executor-93b95167be66d4ad)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/priority_executor-0f6bf266702eed13)
[INFO] [stdout] test test::parses_nothing ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 10.01s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test lib::test::parses_nothing ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 10.07s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests priority-executor
[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" "6aaa19ddba9804e6cff574b6db34a844d2b55436ead42341e26e7d0b2309428f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6aaa19ddba9804e6cff574b6db34a844d2b55436ead42341e26e7d0b2309428f", kill_on_drop: false }`
[INFO] [stdout] 6aaa19ddba9804e6cff574b6db34a844d2b55436ead42341e26e7d0b2309428f