Nov 27 19:07:36.834 INFO checking taskie/rust-memo against try#db42d4dad33013eba11ef37342ad9f614e5652b8 for pr-56074
Nov 27 19:07:36.834 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56074/worker-5/try#db42d4dad33013eba11ef37342ad9f614e5652b8:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-5/pr-56074/try#db42d4dad33013eba11ef37342ad9f614e5652b8:/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 +db42d4dad33013eba11ef37342ad9f614e5652b8-alt check --frozen --all --all-targets" "-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 27 19:07:37.502 INFO [stdout] a0109141727cd554884d570d1a929bbc2f72425bf135d26a3073fea3a9b5fae7
Nov 27 19:07:37.503 INFO running `"docker" "start" "-a" "a0109141727cd554884d570d1a929bbc2f72425bf135d26a3073fea3a9b5fae7"`
Nov 27 19:07:38.831 INFO [stderr] usermod: no changes
Nov 27 19:07:38.884 INFO [stderr]     Checking memo v0.1.0 (/source)
Nov 27 19:07:39.237 INFO [stderr] warning: struct is never constructed: `S2_1`
Nov 27 19:07:39.237 INFO [stderr]  --> src/memo1.rs:5:1
Nov 27 19:07:39.237 INFO [stderr]   |
Nov 27 19:07:39.237 INFO [stderr] 5 | struct S2_1 { s1: Option<S1> }
Nov 27 19:07:39.237 INFO [stderr]   | ^^^^^^^^^^^
Nov 27 19:07:39.237 INFO [stderr]   |
Nov 27 19:07:39.237 INFO [stderr]   = note: #[warn(dead_code)] on by default
Nov 27 19:07:39.237 INFO [stderr] 
Nov 27 19:07:39.237 INFO [stderr] warning: struct is never constructed: `S2_2`
Nov 27 19:07:39.237 INFO [stderr]  --> src/memo1.rs:8:1
Nov 27 19:07:39.237 INFO [stderr]   |
Nov 27 19:07:39.237 INFO [stderr] 8 | struct S2_2<'a> { s1: Option<&'a S1> }
Nov 27 19:07:39.237 INFO [stderr]   | ^^^^^^^^^^^^^^^
Nov 27 19:07:39.237 INFO [stderr] 
Nov 27 19:07:39.237 INFO [stderr] warning: method is never used: `f1`
Nov 27 19:07:39.237 INFO [stderr]   --> src/memo1.rs:16:5
Nov 27 19:07:39.237 INFO [stderr]    |
Nov 27 19:07:39.237 INFO [stderr] 16 |     fn f1(&self) -> S1 {
Nov 27 19:07:39.237 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^
Nov 27 19:07:39.237 INFO [stderr] 
Nov 27 19:07:39.237 INFO [stderr] warning: method is never used: `f1`
Nov 27 19:07:39.237 INFO [stderr]   --> src/memo1.rs:23:5
Nov 27 19:07:39.237 INFO [stderr]    |
Nov 27 19:07:39.237 INFO [stderr] 23 |     fn f1(&self) -> &S1 {
Nov 27 19:07:39.237 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^
Nov 27 19:07:39.237 INFO [stderr] 
Nov 27 19:07:39.456 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.59s
Nov 27 19:07:39.456 INFO [stderr] su: No module specific data is present
Nov 27 19:07:40.367 INFO running `"docker" "inspect" "a0109141727cd554884d570d1a929bbc2f72425bf135d26a3073fea3a9b5fae7"`
Nov 27 19:07:40.628 INFO running `"docker" "rm" "-f" "a0109141727cd554884d570d1a929bbc2f72425bf135d26a3073fea3a9b5fae7"`
Nov 27 19:07:40.912 INFO [stdout] a0109141727cd554884d570d1a929bbc2f72425bf135d26a3073fea3a9b5fae7