[INFO] fetching crate round-multiple 0.1.0...
[INFO] building round-multiple-0.1.0 against master#ad85bc524b1ad696e42061ad8338d382dffbdbe5 for pr-146237-1
[INFO] extracting crate round-multiple 0.1.0 into /workspace/builds/worker-6-tc1/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-6-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate round-multiple 0.1.0 on toolchain ad85bc524b1ad696e42061ad8338d382dffbdbe5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "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" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 78b417469b282bcf39a5d399ceed2305796889b73cec67aaa31e1eca02148adc
[INFO] running `Command { std: "docker" "start" "-a" "78b417469b282bcf39a5d399ceed2305796889b73cec67aaa31e1eca02148adc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "78b417469b282bcf39a5d399ceed2305796889b73cec67aaa31e1eca02148adc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "78b417469b282bcf39a5d399ceed2305796889b73cec67aaa31e1eca02148adc", kill_on_drop: false }`
[INFO] [stdout] 78b417469b282bcf39a5d399ceed2305796889b73cec67aaa31e1eca02148adc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 09532f08dcd526b9de828398f3009ce9f8c150e11258674b192e6c355a30f983
[INFO] running `Command { std: "docker" "start" "-a" "09532f08dcd526b9de828398f3009ce9f8c150e11258674b192e6c355a30f983", 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 0.19s
[INFO] running `Command { std: "docker" "inspect" "09532f08dcd526b9de828398f3009ce9f8c150e11258674b192e6c355a30f983", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "09532f08dcd526b9de828398f3009ce9f8c150e11258674b192e6c355a30f983", kill_on_drop: false }`
[INFO] [stdout] 09532f08dcd526b9de828398f3009ce9f8c150e11258674b192e6c355a30f983
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f91dcd1f3ecc84f6c688f10c7b166b10397ed021d32596f2dc997d6e0293f9d7
[INFO] running `Command { std: "docker" "start" "-a" "f91dcd1f3ecc84f6c688f10c7b166b10397ed021d32596f2dc997d6e0293f9d7", kill_on_drop: false }`
[INFO] [stderr]    Compiling round-multiple v0.1.0 (/opt/rustwide/workdir)
[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 0.25s
[INFO] running `Command { std: "docker" "inspect" "f91dcd1f3ecc84f6c688f10c7b166b10397ed021d32596f2dc997d6e0293f9d7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f91dcd1f3ecc84f6c688f10c7b166b10397ed021d32596f2dc997d6e0293f9d7", kill_on_drop: false }`
[INFO] [stdout] f91dcd1f3ecc84f6c688f10c7b166b10397ed021d32596f2dc997d6e0293f9d7