[INFO] fetching crate welford 0.1.0...
[INFO] testing welford-0.1.0 against beta-2022-02-22 for beta-1.60-1
[INFO] extracting crate welford 0.1.0 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate welford 0.1.0 on toolchain beta-2022-02-22
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate welford 0.1.0
[INFO] finished tweaking crates.io crate welford 0.1.0
[INFO] tweaked toml for crates.io crate welford 0.1.0 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate crates.io crate welford 0.1.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "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] 6cd5c1694b014b24701edd6eb98ab0e9b95d258294630f5b0556815fbce60a17
[INFO] running `Command { std: "docker" "start" "-a" "6cd5c1694b014b24701edd6eb98ab0e9b95d258294630f5b0556815fbce60a17", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6cd5c1694b014b24701edd6eb98ab0e9b95d258294630f5b0556815fbce60a17", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6cd5c1694b014b24701edd6eb98ab0e9b95d258294630f5b0556815fbce60a17", kill_on_drop: false }`
[INFO] [stdout] 6cd5c1694b014b24701edd6eb98ab0e9b95d258294630f5b0556815fbce60a17
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "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] 71e08957e27f7622e9c956a2528aeded7cc2860296122a0e891ef6d43c4268ef
[INFO] running `Command { std: "docker" "start" "-a" "71e08957e27f7622e9c956a2528aeded7cc2860296122a0e891ef6d43c4268ef", kill_on_drop: false }`
[INFO] [stderr]    Compiling welford v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function is never used: `merge`
[INFO] [stdout]    --> src/lib.rs:100:8
[INFO] [stdout]     |
[INFO] [stdout] 100 |     fn merge(&mut self, other: Self) {
[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 1.08s
[INFO] running `Command { std: "docker" "inspect" "71e08957e27f7622e9c956a2528aeded7cc2860296122a0e891ef6d43c4268ef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "71e08957e27f7622e9c956a2528aeded7cc2860296122a0e891ef6d43c4268ef", kill_on_drop: false }`
[INFO] [stdout] 71e08957e27f7622e9c956a2528aeded7cc2860296122a0e891ef6d43c4268ef
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "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] f699c09153552706a6210b55551d7d7e85ae4024d7125f724992045ea556eae2
[INFO] running `Command { std: "docker" "start" "-a" "f699c09153552706a6210b55551d7d7e85ae4024d7125f724992045ea556eae2", kill_on_drop: false }`
[INFO] [stderr]    Compiling welford v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function is never used: `merge`
[INFO] [stdout]    --> src/lib.rs:100:8
[INFO] [stdout]     |
[INFO] [stdout] 100 |     fn merge(&mut self, other: Self) {
[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 test [unoptimized + debuginfo] target(s) in 1.42s
[INFO] running `Command { std: "docker" "inspect" "f699c09153552706a6210b55551d7d7e85ae4024d7125f724992045ea556eae2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f699c09153552706a6210b55551d7d7e85ae4024d7125f724992045ea556eae2", kill_on_drop: false }`
[INFO] [stdout] f699c09153552706a6210b55551d7d7e85ae4024d7125f724992045ea556eae2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] dfd774a3833b4be2fd314f7c1dbd18f23dcb7cce98ae2ff5080dfde87a065914
[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" "dfd774a3833b4be2fd314f7c1dbd18f23dcb7cce98ae2ff5080dfde87a065914", kill_on_drop: false }`
[INFO] [stderr] warning: associated function is never used: `merge`
[INFO] [stderr]    --> src/lib.rs:100:8
[INFO] [stderr]     |
[INFO] [stderr] 100 |     fn merge(&mut self, other: Self) {
[INFO] [stderr]     |        ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `welford` (lib) generated 1 warning
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/welford-27a473ef06f25b56)
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test tests::test_merge ... ok
[INFO] [stdout] test tests::test_weighted_merge ... ok
[INFO] [stdout] test tests::test_welford ... ok
[INFO] [stderr]    Doc-tests welford
[INFO] [stdout] test tests::test_weighted_welford ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[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" "dfd774a3833b4be2fd314f7c1dbd18f23dcb7cce98ae2ff5080dfde87a065914", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dfd774a3833b4be2fd314f7c1dbd18f23dcb7cce98ae2ff5080dfde87a065914", kill_on_drop: false }`
[INFO] [stdout] dfd774a3833b4be2fd314f7c1dbd18f23dcb7cce98ae2ff5080dfde87a065914