Dec 11 13:10:18.905 INFO checking mtn/ipsum against try#aa9aa79c3c583aab59ac9134542d60a780c35e2e for pr-56677
Dec 11 13:10:18.905 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-4/try#aa9aa79c3c583aab59ac9134542d60a780c35e2e:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-56677/try#aa9aa79c3c583aab59ac9134542d60a780c35e2e:/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 +aa9aa79c3c583aab59ac9134542d60a780c35e2e-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"`
Dec 11 13:10:19.306 INFO [stdout] f27abd0250cbc32072ea9dbe2314fe0b087ef8ccf00ec56fb3c07afef6653dfd
Dec 11 13:10:19.313 INFO running `"docker" "start" "-a" "f27abd0250cbc32072ea9dbe2314fe0b087ef8ccf00ec56fb3c07afef6653dfd"`
Dec 11 13:10:20.176 INFO [stderr] usermod: no changes
Dec 11 13:10:20.240 INFO [stderr]     Checking ropey v0.8.0
Dec 11 13:10:21.557 INFO [stderr]     Checking ipsum v0.1.0 (/source)
Dec 11 13:10:22.425 INFO [stderr] warning: method is never used: `set_name`
Dec 11 13:10:22.425 INFO [stderr]   --> src/buffer.rs:42:5
Dec 11 13:10:22.425 INFO [stderr]    |
Dec 11 13:10:22.425 INFO [stderr] 42 |     pub fn set_name(&mut self, filename: &str) -> Option<Buffer> {
Dec 11 13:10:22.426 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:10:22.426 INFO [stderr]    |
Dec 11 13:10:22.426 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 11 13:10:22.426 INFO [stderr] 
Dec 11 13:10:22.426 INFO [stderr] warning: method is never used: `save`
Dec 11 13:10:22.426 INFO [stderr]   --> src/buffer.rs:60:5
Dec 11 13:10:22.426 INFO [stderr]    |
Dec 11 13:10:22.426 INFO [stderr] 60 |     pub fn save(&mut self) -> bool {
Dec 11 13:10:22.426 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:10:22.426 INFO [stderr] 
Dec 11 13:10:22.426 INFO [stderr] warning: variant is never constructed: `Insert`
Dec 11 13:10:22.426 INFO [stderr]  --> src/editor.rs:9:5
Dec 11 13:10:22.426 INFO [stderr]   |
Dec 11 13:10:22.426 INFO [stderr] 9 |     Insert,
Dec 11 13:10:22.426 INFO [stderr]   |     ^^^^^^
Dec 11 13:10:22.426 INFO [stderr] 
Dec 11 13:10:22.426 INFO [stderr] warning: field is never used: `buffers`
Dec 11 13:10:22.426 INFO [stderr]   --> src/editor.rs:17:5
Dec 11 13:10:22.426 INFO [stderr]    |
Dec 11 13:10:22.426 INFO [stderr] 17 |     buffers: Vec<Buffer>,
Dec 11 13:10:22.426 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
Dec 11 13:10:22.426 INFO [stderr] 
Dec 11 13:10:22.426 INFO [stderr] warning: field is never used: `mode`
Dec 11 13:10:22.426 INFO [stderr]   --> src/editor.rs:19:5
Dec 11 13:10:22.426 INFO [stderr]    |
Dec 11 13:10:22.426 INFO [stderr] 19 |     mode: Mode,
Dec 11 13:10:22.426 INFO [stderr]    |     ^^^^^^^^^^
Dec 11 13:10:22.426 INFO [stderr] 
Dec 11 13:10:22.426 INFO [stderr] warning: the feature `extern_prelude` has been stable since 1.30.0 and no longer requires an attribute to enable
Dec 11 13:10:22.426 INFO [stderr]  --> src/main.rs:1:12
Dec 11 13:10:22.426 INFO [stderr]   |
Dec 11 13:10:22.426 INFO [stderr] 1 | #![feature(extern_prelude)]
Dec 11 13:10:22.426 INFO [stderr]   |            ^^^^^^^^^^^^^^
Dec 11 13:10:22.426 INFO [stderr]   |
Dec 11 13:10:22.426 INFO [stderr]   = note: #[warn(stable_features)] on by default
Dec 11 13:10:22.426 INFO [stderr] 
Dec 11 13:10:22.523 INFO [stderr] warning: method is never used: `set_name`
Dec 11 13:10:22.523 INFO [stderr]   --> src/buffer.rs:42:5
Dec 11 13:10:22.523 INFO [stderr]    |
Dec 11 13:10:22.523 INFO [stderr] 42 |     pub fn set_name(&mut self, filename: &str) -> Option<Buffer> {
Dec 11 13:10:22.523 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:10:22.523 INFO [stderr]    |
Dec 11 13:10:22.523 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 11 13:10:22.523 INFO [stderr] 
Dec 11 13:10:22.523 INFO [stderr] warning: method is never used: `save`
Dec 11 13:10:22.523 INFO [stderr]   --> src/buffer.rs:60:5
Dec 11 13:10:22.523 INFO [stderr]    |
Dec 11 13:10:22.523 INFO [stderr] 60 |     pub fn save(&mut self) -> bool {
Dec 11 13:10:22.523 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:10:22.523 INFO [stderr] 
Dec 11 13:10:22.523 INFO [stderr] warning: variant is never constructed: `Insert`
Dec 11 13:10:22.523 INFO [stderr]  --> src/editor.rs:9:5
Dec 11 13:10:22.523 INFO [stderr]   |
Dec 11 13:10:22.523 INFO [stderr] 9 |     Insert,
Dec 11 13:10:22.523 INFO [stderr]   |     ^^^^^^
Dec 11 13:10:22.523 INFO [stderr] 
Dec 11 13:10:22.523 INFO [stderr] warning: field is never used: `buffers`
Dec 11 13:10:22.523 INFO [stderr]   --> src/editor.rs:17:5
Dec 11 13:10:22.523 INFO [stderr]    |
Dec 11 13:10:22.523 INFO [stderr] 17 |     buffers: Vec<Buffer>,
Dec 11 13:10:22.523 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
Dec 11 13:10:22.523 INFO [stderr] 
Dec 11 13:10:22.523 INFO [stderr] warning: field is never used: `mode`
Dec 11 13:10:22.523 INFO [stderr]   --> src/editor.rs:19:5
Dec 11 13:10:22.523 INFO [stderr]    |
Dec 11 13:10:22.523 INFO [stderr] 19 |     mode: Mode,
Dec 11 13:10:22.523 INFO [stderr]    |     ^^^^^^^^^^
Dec 11 13:10:22.523 INFO [stderr] 
Dec 11 13:10:22.523 INFO [stderr] warning: the feature `extern_prelude` has been stable since 1.30.0 and no longer requires an attribute to enable
Dec 11 13:10:22.523 INFO [stderr]  --> src/main.rs:1:12
Dec 11 13:10:22.523 INFO [stderr]   |
Dec 11 13:10:22.523 INFO [stderr] 1 | #![feature(extern_prelude)]
Dec 11 13:10:22.523 INFO [stderr]   |            ^^^^^^^^^^^^^^
Dec 11 13:10:22.523 INFO [stderr]   |
Dec 11 13:10:22.523 INFO [stderr]   = note: #[warn(stable_features)] on by default
Dec 11 13:10:22.523 INFO [stderr] 
Dec 11 13:10:22.561 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.36s
Dec 11 13:10:22.564 INFO [stderr] su: No module specific data is present
Dec 11 13:10:23.022 INFO running `"docker" "inspect" "f27abd0250cbc32072ea9dbe2314fe0b087ef8ccf00ec56fb3c07afef6653dfd"`
Dec 11 13:10:23.361 INFO running `"docker" "rm" "-f" "f27abd0250cbc32072ea9dbe2314fe0b087ef8ccf00ec56fb3c07afef6653dfd"`
Dec 11 13:10:23.584 INFO [stdout] f27abd0250cbc32072ea9dbe2314fe0b087ef8ccf00ec56fb3c07afef6653dfd