[INFO] fetching crate gaps 0.2.1...
[INFO] testing gaps-0.2.1 against beta-2021-01-01 for beta-1.50-1
[INFO] extracting crate gaps 0.2.1 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate gaps 0.2.1 on toolchain beta-2021-01-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate gaps 0.2.1
[INFO] finished tweaking crates.io crate gaps 0.2.1
[INFO] tweaked toml for crates.io crate gaps 0.2.1 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d8223102449788bf0ff0500be1686ba4f1e62ef7e16430989a39a0942c365da8
[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" "d8223102449788bf0ff0500be1686ba4f1e62ef7e16430989a39a0942c365da8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d8223102449788bf0ff0500be1686ba4f1e62ef7e16430989a39a0942c365da8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d8223102449788bf0ff0500be1686ba4f1e62ef7e16430989a39a0942c365da8", kill_on_drop: false }`
[INFO] [stdout] d8223102449788bf0ff0500be1686ba4f1e62ef7e16430989a39a0942c365da8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 39341d954be35747f6ea47d4b4f6f789d73ce80c67c54fd0d9b06f94a57db0f5
[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" "39341d954be35747f6ea47d4b4f6f789d73ce80c67c54fd0d9b06f94a57db0f5", kill_on_drop: false }`
[INFO] [stderr]    Compiling gaps v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.43s
[INFO] running `Command { std: "docker" "inspect" "39341d954be35747f6ea47d4b4f6f789d73ce80c67c54fd0d9b06f94a57db0f5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "39341d954be35747f6ea47d4b4f6f789d73ce80c67c54fd0d9b06f94a57db0f5", kill_on_drop: false }`
[INFO] [stdout] 39341d954be35747f6ea47d4b4f6f789d73ce80c67c54fd0d9b06f94a57db0f5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "test" "--frozen" "--no-run" "--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] 6ebd92c5300693d37ffdf436702ccae46afb97355f997cce75825a0eb8002487
[INFO] running `Command { std: "docker" "start" "-a" "6ebd92c5300693d37ffdf436702ccae46afb97355f997cce75825a0eb8002487", kill_on_drop: false }`
[INFO] [stderr]    Compiling gaps v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.31s
[INFO] running `Command { std: "docker" "inspect" "6ebd92c5300693d37ffdf436702ccae46afb97355f997cce75825a0eb8002487", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6ebd92c5300693d37ffdf436702ccae46afb97355f997cce75825a0eb8002487", kill_on_drop: false }`
[INFO] [stdout] 6ebd92c5300693d37ffdf436702ccae46afb97355f997cce75825a0eb8002487
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 8ee79fe91fdc13b201a6d982990a7f03f08a952abc916a76495e9503b6ee8669
[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" "8ee79fe91fdc13b201a6d982990a7f03f08a952abc916a76495e9503b6ee8669", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stdout] running 6 tests
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/gaps-af99d020859b2356
[INFO] [stdout] test bounds::tests::end_less_than_end ... ok
[INFO] [stdout] test bounds::tests::start_less_than_or_equal_start ... ok
[INFO] [stdout] test bounds::tests::start_less_or_equal_end ... ok
[INFO] [stdout] test bounds::tests::start_less_than_start ... ok
[INFO] [stdout] test inc::tests::increment ... ok
[INFO] [stderr]    Doc-tests gaps
[INFO] [stdout] test gaps::tests::panic_when_non_ascending ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.05s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test src/gaps.rs - gaps::Gappable (line 130) ... ok
[INFO] [stdout] test src/gaps.rs - gaps::RangeGappable (line 168) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 1.07s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "8ee79fe91fdc13b201a6d982990a7f03f08a952abc916a76495e9503b6ee8669", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8ee79fe91fdc13b201a6d982990a7f03f08a952abc916a76495e9503b6ee8669", kill_on_drop: false }`
[INFO] [stdout] 8ee79fe91fdc13b201a6d982990a7f03f08a952abc916a76495e9503b6ee8669