[INFO] fetching crate flat_collections 0.2.0...
[INFO] testing flat_collections-0.2.0 against try#c2e32f1c9652b13ed99608599c1e855462f421f3 for pr-146098-7
[INFO] extracting crate flat_collections 0.2.0 into /workspace/builds/worker-1-tc2/source
[INFO] started tweaking crates.io crate flat_collections 0.2.0
[INFO] finished tweaking crates.io crate flat_collections 0.2.0
[INFO] tweaked toml for crates.io crate flat_collections 0.2.0 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate flat_collections 0.2.0 on toolchain c2e32f1c9652b13ed99608599c1e855462f421f3
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "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" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "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" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 58f0957801ab6436c556f824a0ab627d230d542c7e8e52364a783f69dc21a846
[INFO] running `Command { std: "docker" "start" "-a" "58f0957801ab6436c556f824a0ab627d230d542c7e8e52364a783f69dc21a846", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "58f0957801ab6436c556f824a0ab627d230d542c7e8e52364a783f69dc21a846", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "58f0957801ab6436c556f824a0ab627d230d542c7e8e52364a783f69dc21a846", kill_on_drop: false }`
[INFO] [stdout] 58f0957801ab6436c556f824a0ab627d230d542c7e8e52364a783f69dc21a846
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f1bcb7c74b9864b2302a0480651db1ae3a446443ae741681c1cc9a19c215be69
[INFO] running `Command { std: "docker" "start" "-a" "f1bcb7c74b9864b2302a0480651db1ae3a446443ae741681c1cc9a19c215be69", kill_on_drop: false }`
[INFO] [stderr]    Compiling flat_collections v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.36s
[INFO] running `Command { std: "docker" "inspect" "f1bcb7c74b9864b2302a0480651db1ae3a446443ae741681c1cc9a19c215be69", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f1bcb7c74b9864b2302a0480651db1ae3a446443ae741681c1cc9a19c215be69", kill_on_drop: false }`
[INFO] [stdout] f1bcb7c74b9864b2302a0480651db1ae3a446443ae741681c1cc9a19c215be69
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8dc425303b24997edf59680b140c76ae9a343318e09805367a2dda4a0b337c63
[INFO] running `Command { std: "docker" "start" "-a" "8dc425303b24997edf59680b140c76ae9a343318e09805367a2dda4a0b337c63", kill_on_drop: false }`
[INFO] [stderr]    Compiling flat_collections v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/flat_set.rs:86:13
[INFO] [stdout]    |
[INFO] [stdout] 86 |         let mut m = FlatSet::from([1, 2, 3]);
[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 0.67s
[INFO] running `Command { std: "docker" "inspect" "8dc425303b24997edf59680b140c76ae9a343318e09805367a2dda4a0b337c63", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8dc425303b24997edf59680b140c76ae9a343318e09805367a2dda4a0b337c63", kill_on_drop: false }`
[INFO] [stdout] 8dc425303b24997edf59680b140c76ae9a343318e09805367a2dda4a0b337c63
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 151feaf18d2e18d45927cc67fce3ef6fe63a3f9fb5495f4157071a61e38640ec
[INFO] running `Command { std: "docker" "start" "-a" "151feaf18d2e18d45927cc67fce3ef6fe63a3f9fb5495f4157071a61e38640ec", kill_on_drop: false }`
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/flat_set.rs:86:13
[INFO] [stderr]    |
[INFO] [stderr] 86 |         let mut m = FlatSet::from([1, 2, 3]);
[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: `flat_collections` (lib test) generated 1 warning (run `cargo fix --lib -p flat_collections --tests` to apply 1 suggestion)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/flat_collections-f5c9c4323208a8a7)
[INFO] [stdout] 
[INFO] [stdout] running 20 tests
[INFO] [stdout] test flat_map::tests::test_clear ... ok
[INFO] [stdout] test flat_map::tests::test_get ... ok
[INFO] [stdout] test flat_map::tests::test_get_key_value ... ok
[INFO] [stdout] test flat_map::tests::test_contains_key ... ok
[INFO] [stdout] test flat_map::tests::test_insert ... ok
[INFO] [stdout] test flat_map::tests::test_get_mut ... ok
[INFO] [stdout] test flat_map::tests::test_iter_mut ... ok
[INFO] [stdout] test flat_map::tests::test_keys ... ok
[INFO] [stdout] test flat_map::tests::test_range ... ok
[INFO] [stdout] test flat_map::tests::test_values_mut ... ok
[INFO] [stdout] test flat_set::tests::test_insert ... ok
[INFO] [stdout] test flat_map::tests::test_values ... ok
[INFO] [stdout] test flat_set::tests::test_is_empty ... ok
[INFO] [stdout] test flat_set::tests::test_iter ... ok
[INFO] [stdout] test flat_set::tests::test_remove ... ok
[INFO] [stdout] test flat_set::tests::test_len ... ok
[INFO] [stdout] test flat_set::tests::test_contains ... ok
[INFO] [stdout] test flat_map::tests::test_len ... ok
[INFO] [stdout] test flat_map::tests::test_remove ... ok
[INFO] [stdout] test flat_map::tests::test_iter ... ok
[INFO] [stderr]    Doc-tests flat_collections
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 20 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.23s
[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" "151feaf18d2e18d45927cc67fce3ef6fe63a3f9fb5495f4157071a61e38640ec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "151feaf18d2e18d45927cc67fce3ef6fe63a3f9fb5495f4157071a61e38640ec", kill_on_drop: false }`
[INFO] [stdout] 151feaf18d2e18d45927cc67fce3ef6fe63a3f9fb5495f4157071a61e38640ec