Dec 19 07:34:29.677 INFO checking taskie/rust-memo against try#e70472fc501b855c9080f3772432c10fe20b8866 for pr-56955
Dec 19 07:34:29.677 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-2/try#e70472fc501b855c9080f3772432c10fe20b8866:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/try#e70472fc501b855c9080f3772432c10fe20b8866/gh/taskie/rust-memo:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+e70472fc501b855c9080f3772432c10fe20b8866-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 07:34:30.258 INFO [stdout] 546f1039e414e234df76d6405fb7bbc99dc47824faff3aaad130c5fbac9ba22d
Dec 19 07:34:30.260 INFO running `"docker" "start" "-a" "546f1039e414e234df76d6405fb7bbc99dc47824faff3aaad130c5fbac9ba22d"`
Dec 19 07:34:33.900 INFO [stderr]     Checking memo v0.1.0 (/opt/crater/workdir)
Dec 19 07:34:34.229 INFO [stderr] warning: struct is never constructed: `S2_1`
Dec 19 07:34:34.230 INFO [stderr]  --> src/memo1.rs:5:1
Dec 19 07:34:34.230 INFO [stderr]   |
Dec 19 07:34:34.230 INFO [stderr] 5 | struct S2_1 { s1: Option<S1> }
Dec 19 07:34:34.231 INFO [stderr]   | ^^^^^^^^^^^
Dec 19 07:34:34.231 INFO [stderr]   |
Dec 19 07:34:34.231 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 19 07:34:34.232 INFO [stderr] 
Dec 19 07:34:34.232 INFO [stderr] warning: struct is never constructed: `S2_2`
Dec 19 07:34:34.232 INFO [stderr]  --> src/memo1.rs:8:1
Dec 19 07:34:34.233 INFO [stderr]   |
Dec 19 07:34:34.233 INFO [stderr] 8 | struct S2_2<'a> { s1: Option<&'a S1> }
Dec 19 07:34:34.233 INFO [stderr]   | ^^^^^^^^^^^^^^^
Dec 19 07:34:34.233 INFO [stderr] 
Dec 19 07:34:34.234 INFO [stderr] warning: method is never used: `f1`
Dec 19 07:34:34.234 INFO [stderr]   --> src/memo1.rs:16:5
Dec 19 07:34:34.234 INFO [stderr]    |
Dec 19 07:34:34.235 INFO [stderr] 16 |     fn f1(&self) -> S1 {
Dec 19 07:34:34.235 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^
Dec 19 07:34:34.235 INFO [stderr] 
Dec 19 07:34:34.235 INFO [stderr] warning: method is never used: `f1`
Dec 19 07:34:34.236 INFO [stderr]   --> src/memo1.rs:23:5
Dec 19 07:34:34.236 INFO [stderr]    |
Dec 19 07:34:34.236 INFO [stderr] 23 |     fn f1(&self) -> &S1 {
Dec 19 07:34:34.237 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^
Dec 19 07:34:34.237 INFO [stderr] 
Dec 19 07:34:34.360 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.52s
Dec 19 07:34:35.637 INFO running `"docker" "inspect" "546f1039e414e234df76d6405fb7bbc99dc47824faff3aaad130c5fbac9ba22d"`
Dec 19 07:34:35.926 INFO running `"docker" "rm" "-f" "546f1039e414e234df76d6405fb7bbc99dc47824faff3aaad130c5fbac9ba22d"`
Dec 19 07:34:36.272 INFO [stdout] 546f1039e414e234df76d6405fb7bbc99dc47824faff3aaad130c5fbac9ba22d