Oct 31 20:01:54.531 INFO checking taskie/rust-memo against try#d7816399d50d407bbce1efe9dbadf8faaaf568fc for pr-55538
Oct 31 20:01:54.533 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55538/worker-3/try#d7816399d50d407bbce1efe9dbadf8faaaf568fc:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-3/pr-55538/try#d7816399d50d407bbce1efe9dbadf8faaaf568fc:/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 +d7816399d50d407bbce1efe9dbadf8faaaf568fc-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"`
Oct 31 20:01:55.147 INFO blam! 853694ce9402d48fedfb798516d12a189a69159dcaa2de186c8773ee2a4bf992
Oct 31 20:01:55.152 INFO running `"docker" "start" "-a" "853694ce9402d48fedfb798516d12a189a69159dcaa2de186c8773ee2a4bf992"`
Oct 31 20:01:56.361 INFO kablam! usermod: no changes
Oct 31 20:01:56.464 INFO kablam!     Checking memo v0.1.0 (/source)
Oct 31 20:01:56.849 INFO kablam! warning: struct is never constructed: `S2_1`
Oct 31 20:01:56.850 INFO kablam!  --> src/memo1.rs:5:1
Oct 31 20:01:56.850 INFO kablam!   |
Oct 31 20:01:56.850 INFO kablam! 5 | struct S2_1 { s1: Option<S1> }
Oct 31 20:01:56.850 INFO kablam!   | ^^^^^^^^^^^
Oct 31 20:01:56.851 INFO kablam!   |
Oct 31 20:01:56.851 INFO kablam!   = note: #[warn(dead_code)] on by default
Oct 31 20:01:56.851 INFO kablam! 
Oct 31 20:01:56.852 INFO kablam! warning: struct is never constructed: `S2_2`
Oct 31 20:01:56.852 INFO kablam!  --> src/memo1.rs:8:1
Oct 31 20:01:56.852 INFO kablam!   |
Oct 31 20:01:56.852 INFO kablam! 8 | struct S2_2<'a> { s1: Option<&'a S1> }
Oct 31 20:01:56.853 INFO kablam!   | ^^^^^^^^^^^^^^^
Oct 31 20:01:56.853 INFO kablam! 
Oct 31 20:01:56.854 INFO kablam! warning: method is never used: `f1`
Oct 31 20:01:56.854 INFO kablam!   --> src/memo1.rs:16:5
Oct 31 20:01:56.854 INFO kablam!    |
Oct 31 20:01:56.854 INFO kablam! 16 |     fn f1(&self) -> S1 {
Oct 31 20:01:56.854 INFO kablam!    |     ^^^^^^^^^^^^^^^^^^
Oct 31 20:01:56.854 INFO kablam! 
Oct 31 20:01:56.854 INFO kablam! warning: method is never used: `f1`
Oct 31 20:01:56.854 INFO kablam!   --> src/memo1.rs:23:5
Oct 31 20:01:56.854 INFO kablam!    |
Oct 31 20:01:56.854 INFO kablam! 23 |     fn f1(&self) -> &S1 {
Oct 31 20:01:56.854 INFO kablam!    |     ^^^^^^^^^^^^^^^^^^^
Oct 31 20:01:56.854 INFO kablam! 
Oct 31 20:01:56.993 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 0.58s
Oct 31 20:01:57.004 INFO kablam! su: No module specific data is present
Oct 31 20:01:58.020 INFO running `"docker" "rm" "-f" "853694ce9402d48fedfb798516d12a189a69159dcaa2de186c8773ee2a4bf992"`
Oct 31 20:01:58.276 INFO blam! 853694ce9402d48fedfb798516d12a189a69159dcaa2de186c8773ee2a4bf992