[INFO] fetching crate round-multiple 0.1.0...
[INFO] building round-multiple-0.1.0 against try#4987e9d4227139400384ab59296ffee3b0fb1183 for pr-146237-2
[INFO] extracting crate round-multiple 0.1.0 into /workspace/builds/worker-7-tc2/source
[INFO] started tweaking crates.io crate round-multiple 0.1.0
[INFO] finished tweaking crates.io crate round-multiple 0.1.0
[INFO] tweaked toml for crates.io crate round-multiple 0.1.0 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate round-multiple 0.1.0 on toolchain 4987e9d4227139400384ab59296ffee3b0fb1183
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate round-multiple 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" "+4987e9d4227139400384ab59296ffee3b0fb1183" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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" "+4987e9d4227139400384ab59296ffee3b0fb1183" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8a69d9e9a6482be2e84ea79e7b6f953af13f084df16cb05b11a277827363c0a1
[INFO] running `Command { std: "docker" "start" "-a" "8a69d9e9a6482be2e84ea79e7b6f953af13f084df16cb05b11a277827363c0a1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8a69d9e9a6482be2e84ea79e7b6f953af13f084df16cb05b11a277827363c0a1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8a69d9e9a6482be2e84ea79e7b6f953af13f084df16cb05b11a277827363c0a1", kill_on_drop: false }`
[INFO] [stdout] 8a69d9e9a6482be2e84ea79e7b6f953af13f084df16cb05b11a277827363c0a1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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" "+4987e9d4227139400384ab59296ffee3b0fb1183" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 390a7b5f45ce9e7597d4a70b50d6fcd002094701d9ce50b46b9bb915b775853f
[INFO] running `Command { std: "docker" "start" "-a" "390a7b5f45ce9e7597d4a70b50d6fcd002094701d9ce50b46b9bb915b775853f", kill_on_drop: false }`
[INFO] [stderr]    Compiling round-multiple v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.12s
[INFO] running `Command { std: "docker" "inspect" "390a7b5f45ce9e7597d4a70b50d6fcd002094701d9ce50b46b9bb915b775853f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "390a7b5f45ce9e7597d4a70b50d6fcd002094701d9ce50b46b9bb915b775853f", kill_on_drop: false }`
[INFO] [stdout] 390a7b5f45ce9e7597d4a70b50d6fcd002094701d9ce50b46b9bb915b775853f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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" "+4987e9d4227139400384ab59296ffee3b0fb1183" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fef607388f76c3593f437024ea74fbcdf718448b156ff01cc8ff93318cf6ad71
[INFO] running `Command { std: "docker" "start" "-a" "fef607388f76c3593f437024ea74fbcdf718448b156ff01cc8ff93318cf6ad71", kill_on_drop: false }`
[INFO] [stderr]    Compiling round-multiple v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `super::*`
[INFO] [stdout]   --> src/lib.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 12 |     use super::*;
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused arithmetic operation that must be used
[INFO] [stdout]   --> src/lib.rs:6:9
[INFO] [stdout]    |
[INFO] [stdout]  6 |         (($x + m - 1) / m) * m
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^ the arithmetic operation produces a value
[INFO] [stdout] ...
[INFO] [stdout] 24 |         round_multiple_checked!(10, 0);
[INFO] [stdout]    |         ------------------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout]    = note: this warning originates in the macro `round_multiple_checked` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 24 |         let _ = round_multiple_checked!(10, 0);;
[INFO] [stdout]    |         +++++++                               +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.36s
[INFO] running `Command { std: "docker" "inspect" "fef607388f76c3593f437024ea74fbcdf718448b156ff01cc8ff93318cf6ad71", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fef607388f76c3593f437024ea74fbcdf718448b156ff01cc8ff93318cf6ad71", kill_on_drop: false }`
[INFO] [stdout] fef607388f76c3593f437024ea74fbcdf718448b156ff01cc8ff93318cf6ad71