[INFO] fetching crate pack_it_up 1.1.0...
[INFO] testing pack_it_up-1.1.0 against try#2440211fe03bc45c89b6dc1a3df18382ce91e32b for pr-146098-1
[INFO] extracting crate pack_it_up 1.1.0 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate pack_it_up 1.1.0
[INFO] finished tweaking crates.io crate pack_it_up 1.1.0
[INFO] tweaked toml for crates.io crate pack_it_up 1.1.0 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate pack_it_up 1.1.0 on toolchain 2440211fe03bc45c89b6dc1a3df18382ce91e32b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2440211fe03bc45c89b6dc1a3df18382ce91e32b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2440211fe03bc45c89b6dc1a3df18382ce91e32b" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2440211fe03bc45c89b6dc1a3df18382ce91e32b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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" "+2440211fe03bc45c89b6dc1a3df18382ce91e32b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 343a5b0790f4089aec32ffee62ca7946d50ade230e7afeeb920e7fd6d55dee35
[INFO] running `Command { std: "docker" "start" "-a" "343a5b0790f4089aec32ffee62ca7946d50ade230e7afeeb920e7fd6d55dee35", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "343a5b0790f4089aec32ffee62ca7946d50ade230e7afeeb920e7fd6d55dee35", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "343a5b0790f4089aec32ffee62ca7946d50ade230e7afeeb920e7fd6d55dee35", kill_on_drop: false }`
[INFO] [stdout] 343a5b0790f4089aec32ffee62ca7946d50ade230e7afeeb920e7fd6d55dee35
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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" "+2440211fe03bc45c89b6dc1a3df18382ce91e32b" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 55679ae699f7b87bc185629d54cea4c17ce62d82ea3481b428bbd7a461e2ee65
[INFO] running `Command { std: "docker" "start" "-a" "55679ae699f7b87bc185629d54cea4c17ce62d82ea3481b428bbd7a461e2ee65", kill_on_drop: false }`
[INFO] [stderr]    Compiling pack_it_up v1.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.14s
[INFO] running `Command { std: "docker" "inspect" "55679ae699f7b87bc185629d54cea4c17ce62d82ea3481b428bbd7a461e2ee65", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "55679ae699f7b87bc185629d54cea4c17ce62d82ea3481b428bbd7a461e2ee65", kill_on_drop: false }`
[INFO] [stdout] 55679ae699f7b87bc185629d54cea4c17ce62d82ea3481b428bbd7a461e2ee65
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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" "+2440211fe03bc45c89b6dc1a3df18382ce91e32b" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e4fc4f2cf2ebf16f227fb554e004995176d3e105211904e0a4b64570cb5c5132
[INFO] running `Command { std: "docker" "start" "-a" "e4fc4f2cf2ebf16f227fb554e004995176d3e105211904e0a4b64570cb5c5132", kill_on_drop: false }`
[INFO] [stderr]    Compiling pack_it_up v1.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/online/next_k_fit.rs:200:13
[INFO] [stdout]     |
[INFO] [stdout] 200 |         let mut bins = packer.pack_all(test_data.into_iter()).unwrap();
[INFO] [stdout]     |             ----^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.71s
[INFO] running `Command { std: "docker" "inspect" "e4fc4f2cf2ebf16f227fb554e004995176d3e105211904e0a4b64570cb5c5132", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e4fc4f2cf2ebf16f227fb554e004995176d3e105211904e0a4b64570cb5c5132", kill_on_drop: false }`
[INFO] [stdout] e4fc4f2cf2ebf16f227fb554e004995176d3e105211904e0a4b64570cb5c5132
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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" "+2440211fe03bc45c89b6dc1a3df18382ce91e32b" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 3ad3bc22f37f60cbc2f807561cf4eadaafd046af6187318d3a105e39093a291b
[INFO] running `Command { std: "docker" "start" "-a" "3ad3bc22f37f60cbc2f807561cf4eadaafd046af6187318d3a105e39093a291b", kill_on_drop: false }`
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/online/next_k_fit.rs:200:13
[INFO] [stderr]     |
[INFO] [stderr] 200 |         let mut bins = packer.pack_all(test_data.into_iter()).unwrap();
[INFO] [stderr]     |             ----^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `pack_it_up` (lib test) generated 1 warning (run `cargo fix --lib -p pack_it_up --tests` to apply 1 suggestion)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/pack_it_up-7795d754f43f831e)
[INFO] [stdout] 
[INFO] [stdout] running 10 tests
[INFO] [stdout] test offline::first_fit_decreasing::tests::it_works_by_key ... ok
[INFO] [stdout] test online::first_fit::tests::it_works ... ok
[INFO] [stdout] test offline::first_fit_decreasing::tests::it_works ... ok
[INFO] [stdout] test online::next_k_fit::tests::empty_input_returns_no_bins ... ok
[INFO] [stdout] test online::next_k_fit::tests::test_dataset_a_k1 ... ok
[INFO] [stdout] test online::next_k_fit::tests::test_dataset_a_k1_seq ... ok
[INFO] [stdout] test online::next_k_fit::tests::test_dataset_a_k2 ... ok
[INFO] [stdout] test wrapper::tests::check_size_when_combining ... ok
[INFO] [stdout] test wrapper::tests::check_size_eq ... ok
[INFO] [stderr]    Doc-tests pack_it_up
[INFO] [stdout] test online::first_fit::tests::it_works_by_key ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 10 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs - (line 5) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.28s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "3ad3bc22f37f60cbc2f807561cf4eadaafd046af6187318d3a105e39093a291b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3ad3bc22f37f60cbc2f807561cf4eadaafd046af6187318d3a105e39093a291b", kill_on_drop: false }`
[INFO] [stdout] 3ad3bc22f37f60cbc2f807561cf4eadaafd046af6187318d3a105e39093a291b