Nov 18 16:01:20.244 INFO testing discard-1.0.4 against master#6b9b97bd9b704f85f0184f7a213cc4d62bd9654c for pr-55982
Nov 18 16:01:20.245 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55982/worker-1/master#6b9b97bd9b704f85f0184f7a213cc4d62bd9654c:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-1/pr-55982/master#6b9b97bd9b704f85f0184f7a213cc4d62bd9654c:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +6b9b97bd9b704f85f0184f7a213cc4d62bd9654c-alt build --frozen" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Nov 18 16:01:20.591 INFO [stdout] cd9b8e5e5eebe8b2dea01d9081c53efa8743a0049c4365193b2b1635c126219f
Nov 18 16:01:20.596 INFO running `"docker" "start" "-a" "cd9b8e5e5eebe8b2dea01d9081c53efa8743a0049c4365193b2b1635c126219f"`
Nov 18 16:01:21.241 INFO [stderr] usermod: no changes
Nov 18 16:01:21.273 INFO [stderr]    Compiling discard v1.0.4 (/source)
Nov 18 16:01:21.735 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.47s
Nov 18 16:01:21.735 INFO [stderr] su: No module specific data is present
Nov 18 16:01:22.140 INFO running `"docker" "inspect" "cd9b8e5e5eebe8b2dea01d9081c53efa8743a0049c4365193b2b1635c126219f"`
Nov 18 16:01:22.250 INFO running `"docker" "rm" "-f" "cd9b8e5e5eebe8b2dea01d9081c53efa8743a0049c4365193b2b1635c126219f"`
Nov 18 16:01:22.387 INFO [stdout] cd9b8e5e5eebe8b2dea01d9081c53efa8743a0049c4365193b2b1635c126219f
Nov 18 16:01:22.395 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55982/worker-1/master#6b9b97bd9b704f85f0184f7a213cc4d62bd9654c:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-1/pr-55982/master#6b9b97bd9b704f85f0184f7a213cc4d62bd9654c:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +6b9b97bd9b704f85f0184f7a213cc4d62bd9654c-alt test --frozen --no-run" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Nov 18 16:01:22.686 INFO [stdout] 16aca35a902c96769424782f959e2c2a6364ede2a4fada631e0a8a95dfafabb5
Nov 18 16:01:22.689 INFO running `"docker" "start" "-a" "16aca35a902c96769424782f959e2c2a6364ede2a4fada631e0a8a95dfafabb5"`
Nov 18 16:01:23.269 INFO [stderr] usermod: no changes
Nov 18 16:01:23.304 INFO [stderr]    Compiling discard v1.0.4 (/source)
Nov 18 16:01:23.907 INFO [stderr] warning: unused `DiscardOnDrop` that must be used
Nov 18 16:01:23.907 INFO [stderr]    --> src/lib.rs:261:9
Nov 18 16:01:23.907 INFO [stderr]     |
Nov 18 16:01:23.907 INFO [stderr] 261 |         DiscardOnDrop::new(Foo::new());
Nov 18 16:01:23.907 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 18 16:01:23.907 INFO [stderr]     |
Nov 18 16:01:23.907 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Nov 18 16:01:23.907 INFO [stderr]     = note: 
Nov 18 16:01:23.907 INFO [stderr]             The DiscardOnDrop is unused, which causes it to be immediately discarded.
Nov 18 16:01:23.907 INFO [stderr]             You probably don't want that to happen.
Nov 18 16:01:23.907 INFO [stderr]             
Nov 18 16:01:23.907 INFO [stderr]             How to fix this:
Nov 18 16:01:23.907 INFO [stderr]             
Nov 18 16:01:23.907 INFO [stderr]               * Store the DiscardOnDrop in a variable or data structure.
Nov 18 16:01:23.907 INFO [stderr]             
Nov 18 16:01:23.907 INFO [stderr]               * Or use the DiscardOnDrop::leak function which will cause it to not be
Nov 18 16:01:23.907 INFO [stderr]                 discarded (this *will* leak memory!).
Nov 18 16:01:23.907 INFO [stderr]             
Nov 18 16:01:23.907 INFO [stderr]             See the DiscardOnDrop documentation for more details.
Nov 18 16:01:23.907 INFO [stderr] 
Nov 18 16:01:23.907 INFO [stderr] warning: unused `DiscardOnDrop` that must be used
Nov 18 16:01:23.907 INFO [stderr]    --> src/lib.rs:262:9
Nov 18 16:01:23.907 INFO [stderr]     |
Nov 18 16:01:23.907 INFO [stderr] 262 |         DiscardOnDrop::new(Foo::new());
Nov 18 16:01:23.907 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 18 16:01:23.907 INFO [stderr]     |
Nov 18 16:01:23.907 INFO [stderr]     = note: 
Nov 18 16:01:23.907 INFO [stderr]             The DiscardOnDrop is unused, which causes it to be immediately discarded.
Nov 18 16:01:23.907 INFO [stderr]             You probably don't want that to happen.
Nov 18 16:01:23.907 INFO [stderr]             
Nov 18 16:01:23.907 INFO [stderr]             How to fix this:
Nov 18 16:01:23.907 INFO [stderr]             
Nov 18 16:01:23.907 INFO [stderr]               * Store the DiscardOnDrop in a variable or data structure.
Nov 18 16:01:23.907 INFO [stderr]             
Nov 18 16:01:23.907 INFO [stderr]               * Or use the DiscardOnDrop::leak function which will cause it to not be
Nov 18 16:01:23.907 INFO [stderr]                 discarded (this *will* leak memory!).
Nov 18 16:01:23.907 INFO [stderr]             
Nov 18 16:01:23.907 INFO [stderr]             See the DiscardOnDrop documentation for more details.
Nov 18 16:01:23.907 INFO [stderr] 
Nov 18 16:01:24.236 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.94s
Nov 18 16:01:24.238 INFO [stderr] su: No module specific data is present
Nov 18 16:01:24.620 INFO running `"docker" "inspect" "16aca35a902c96769424782f959e2c2a6364ede2a4fada631e0a8a95dfafabb5"`
Nov 18 16:01:24.707 INFO running `"docker" "rm" "-f" "16aca35a902c96769424782f959e2c2a6364ede2a4fada631e0a8a95dfafabb5"`
Nov 18 16:01:24.821 INFO [stdout] 16aca35a902c96769424782f959e2c2a6364ede2a4fada631e0a8a95dfafabb5
Nov 18 16:01:24.824 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55982/worker-1/master#6b9b97bd9b704f85f0184f7a213cc4d62bd9654c:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-1/pr-55982/master#6b9b97bd9b704f85f0184f7a213cc4d62bd9654c:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +6b9b97bd9b704f85f0184f7a213cc4d62bd9654c-alt test --frozen" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Nov 18 16:01:25.009 INFO [stdout] 43a418df7d514c99aa9c59fee116b9e0e5325d5552754ac556cf032ffe8c9ece
Nov 18 16:01:25.011 INFO running `"docker" "start" "-a" "43a418df7d514c99aa9c59fee116b9e0e5325d5552754ac556cf032ffe8c9ece"`
Nov 18 16:01:25.534 INFO [stderr] usermod: no changes
Nov 18 16:01:25.570 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
Nov 18 16:01:25.570 INFO [stderr]      Running /target/debug/deps/discard-4a6f4d1b5123068e
Nov 18 16:01:25.574 INFO [stdout] 
Nov 18 16:01:25.574 INFO [stdout] running 7 tests
Nov 18 16:01:25.574 INFO [stdout] test tests::deref_mut ... ok
Nov 18 16:01:25.574 INFO [stdout] test tests::discard ... ok
Nov 18 16:01:25.574 INFO [stdout] test tests::leak ... ok
Nov 18 16:01:25.579 INFO [stdout] test tests::no_discard ... ok
Nov 18 16:01:25.579 INFO [stdout] test tests::unused ... ok
Nov 18 16:01:25.579 INFO [stdout] test tests::unused_discard_on_drop ... ok
Nov 18 16:01:25.579 INFO [stdout] test tests::discard_on_drop ... ok
Nov 18 16:01:25.579 INFO [stdout] 
Nov 18 16:01:25.579 INFO [stdout] test result: ok. 7 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Nov 18 16:01:25.579 INFO [stdout] 
Nov 18 16:01:25.591 INFO [stderr]    Doc-tests discard
Nov 18 16:01:26.299 INFO [stdout] 
Nov 18 16:01:26.299 INFO [stdout] running 3 tests
Nov 18 16:01:26.299 INFO [stdout] test src/lib.rs -  (line 15) ... ignored
Nov 18 16:01:26.299 INFO [stdout] test src/lib.rs -  (line 30) ... ignored
Nov 18 16:01:26.299 INFO [stdout] test src/lib.rs -  (line 61) ... ignored
Nov 18 16:01:26.299 INFO [stdout] 
Nov 18 16:01:26.299 INFO [stdout] test result: ok. 0 passed; 0 failed; 3 ignored; 0 measured; 0 filtered out
Nov 18 16:01:26.299 INFO [stdout] 
Nov 18 16:01:26.306 INFO [stderr] su: No module specific data is present
Nov 18 16:01:26.604 INFO running `"docker" "inspect" "43a418df7d514c99aa9c59fee116b9e0e5325d5552754ac556cf032ffe8c9ece"`
Nov 18 16:01:26.746 INFO running `"docker" "rm" "-f" "43a418df7d514c99aa9c59fee116b9e0e5325d5552754ac556cf032ffe8c9ece"`
Nov 18 16:01:26.841 INFO [stdout] 43a418df7d514c99aa9c59fee116b9e0e5325d5552754ac556cf032ffe8c9ece