[INFO] fetching crate welford 0.1.0...
[INFO] testing welford-0.1.0 against master#350d0ef0ec0493e6d21cfb265cb8211a0e74d766 for pr-145330-1
[INFO] extracting crate welford 0.1.0 into /workspace/builds/worker-0-tc1/source
[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-0-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate welford 0.1.0 on toolchain 350d0ef0ec0493e6d21cfb265cb8211a0e74d766
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate welford 0.1.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cdeba3e4d9a09c59a1e02265088e04b1f26140689a9fc5b67291f9ed60b33564
[INFO] running `Command { std: "docker" "start" "-a" "cdeba3e4d9a09c59a1e02265088e04b1f26140689a9fc5b67291f9ed60b33564", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cdeba3e4d9a09c59a1e02265088e04b1f26140689a9fc5b67291f9ed60b33564", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cdeba3e4d9a09c59a1e02265088e04b1f26140689a9fc5b67291f9ed60b33564", kill_on_drop: false }`
[INFO] [stdout] cdeba3e4d9a09c59a1e02265088e04b1f26140689a9fc5b67291f9ed60b33564
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d0a63cdc63514c6c874fed35ac01993a3fa452a9f90cfa4a8d93328a5a7804de
[INFO] running `Command { std: "docker" "start" "-a" "d0a63cdc63514c6c874fed35ac01993a3fa452a9f90cfa4a8d93328a5a7804de", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling welford v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: method `merge` is never used
[INFO] [stdout]    --> src/lib.rs:100:8
[INFO] [stdout]     |
[INFO] [stdout]  61 | / impl<T, W> Welford<T, W>
[INFO] [stdout]  62 | | where
[INFO] [stdout]  63 | |     T: Copy + Num + NumAssign + NumCast,
[INFO] [stdout]  64 | |     W: Copy + Num + NumAssign + NumCast + PartialOrd,
[INFO] [stdout]     | |_____________________________________________________- method in this implementation
[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] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.84s
[INFO] running `Command { std: "docker" "inspect" "d0a63cdc63514c6c874fed35ac01993a3fa452a9f90cfa4a8d93328a5a7804de", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d0a63cdc63514c6c874fed35ac01993a3fa452a9f90cfa4a8d93328a5a7804de", kill_on_drop: false }`
[INFO] [stdout] d0a63cdc63514c6c874fed35ac01993a3fa452a9f90cfa4a8d93328a5a7804de
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cf48679d23635a8f3f7d9279c87ae73a31593453c63bc74ed3384a5c8a338eb9
[INFO] running `Command { std: "docker" "start" "-a" "cf48679d23635a8f3f7d9279c87ae73a31593453c63bc74ed3384a5c8a338eb9", kill_on_drop: false }`
[INFO] [stderr]    Compiling welford v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: method `merge` is never used
[INFO] [stdout]    --> src/lib.rs:100:8
[INFO] [stdout]     |
[INFO] [stdout]  61 | / impl<T, W> Welford<T, W>
[INFO] [stdout]  62 | | where
[INFO] [stdout]  63 | |     T: Copy + Num + NumAssign + NumCast,
[INFO] [stdout]  64 | |     W: Copy + Num + NumAssign + NumCast + PartialOrd,
[INFO] [stdout]     | |_____________________________________________________- method in this implementation
[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] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.29s
[INFO] running `Command { std: "docker" "inspect" "cf48679d23635a8f3f7d9279c87ae73a31593453c63bc74ed3384a5c8a338eb9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cf48679d23635a8f3f7d9279c87ae73a31593453c63bc74ed3384a5c8a338eb9", kill_on_drop: false }`
[INFO] [stdout] cf48679d23635a8f3f7d9279c87ae73a31593453c63bc74ed3384a5c8a338eb9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 81f28d0662595544cff891e7d37576ccc7376682f5e2aeea79b8b6010e4c8627
[INFO] running `Command { std: "docker" "start" "-a" "81f28d0662595544cff891e7d37576ccc7376682f5e2aeea79b8b6010e4c8627", kill_on_drop: false }`
[INFO] [stderr] warning: method `merge` is never used
[INFO] [stderr]    --> src/lib.rs:100:8
[INFO] [stderr]     |
[INFO] [stderr]  61 | / impl<T, W> Welford<T, W>
[INFO] [stderr]  62 | | where
[INFO] [stderr]  63 | |     T: Copy + Num + NumAssign + NumCast,
[INFO] [stderr]  64 | |     W: Copy + Num + NumAssign + NumCast + PartialOrd,
[INFO] [stderr]     | |_____________________________________________________- method in this implementation
[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` profile [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/welford-b6f27e430c673012)
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test tests::test_merge ... ok
[INFO] [stdout] test tests::test_weighted_welford ... ok
[INFO] [stdout] test tests::test_weighted_merge ... ok
[INFO] [stdout] test tests::test_welford ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests welford
[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" "81f28d0662595544cff891e7d37576ccc7376682f5e2aeea79b8b6010e4c8627", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "81f28d0662595544cff891e7d37576ccc7376682f5e2aeea79b8b6010e4c8627", kill_on_drop: false }`
[INFO] [stdout] 81f28d0662595544cff891e7d37576ccc7376682f5e2aeea79b8b6010e4c8627