[INFO] updating cached repository mtn/ipsum
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/mtn/ipsum
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/mtn/ipsum" "work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/gh/mtn/ipsum"`
[INFO] [stderr] Cloning into 'work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/gh/mtn/ipsum'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/mtn/ipsum" "work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/gh/mtn/ipsum"`
[INFO] [stderr] Cloning into 'work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/gh/mtn/ipsum'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 02ed7e3c66299e8bda3623eaff8ee06c00de982f
[INFO] sha for GitHub repo mtn/ipsum: 02ed7e3c66299e8bda3623eaff8ee06c00de982f
[INFO] validating manifest of mtn/ipsum on toolchain master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of mtn/ipsum on toolchain try#7fea0229842e79db1159ea58ad9a653b288efee9
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing mtn/ipsum
[INFO] finished frobbing mtn/ipsum
[INFO] frobbed toml for mtn/ipsum written to work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/gh/mtn/ipsum/Cargo.toml
[INFO] started frobbing mtn/ipsum
[INFO] finished frobbing mtn/ipsum
[INFO] frobbed toml for mtn/ipsum written to work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/gh/mtn/ipsum/Cargo.toml
[INFO] crate mtn/ipsum has a lockfile. skipping
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing mtn/ipsum against try#7fea0229842e79db1159ea58ad9a653b288efee9 for pr-57967
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57967/worker-2/try#7fea0229842e79db1159ea58ad9a653b288efee9:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/gh/mtn/ipsum:/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" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "build" "--frozen"`
[INFO] [stdout] c9690c00949fa9113d584cf9764f7cb17a9b6e641953263e7b571b27e1b58a44
[INFO] running `"docker" "start" "-a" "c9690c00949fa9113d584cf9764f7cb17a9b6e641953263e7b571b27e1b58a44"`
[INFO] [stderr]    Compiling smallvec v0.6.3
[INFO] [stderr]    Compiling ropey v0.8.0
[INFO] [stderr]    Compiling ipsum v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: method is never used: `set_name`
[INFO] [stderr]   --> src/buffer.rs:42:5
[INFO] [stderr]    |
[INFO] [stderr] 42 |     pub fn set_name(&mut self, filename: &str) -> Option<Buffer> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `save`
[INFO] [stderr]   --> src/buffer.rs:60:5
[INFO] [stderr]    |
[INFO] [stderr] 60 |     pub fn save(&mut self) -> bool {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Insert`
[INFO] [stderr]  --> src/editor.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 |     Insert,
[INFO] [stderr]   |     ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `buffers`
[INFO] [stderr]   --> src/editor.rs:17:5
[INFO] [stderr]    |
[INFO] [stderr] 17 |     buffers: Vec<Buffer>,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `mode`
[INFO] [stderr]   --> src/editor.rs:19:5
[INFO] [stderr]    |
[INFO] [stderr] 19 |     mode: Mode,
[INFO] [stderr]    |     ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: the feature `extern_prelude` has been stable since 1.30.0 and no longer requires an attribute to enable
[INFO] [stderr]  --> src/main.rs:1:12
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(extern_prelude)]
[INFO] [stderr]   |            ^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(stable_features)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.74s
[INFO] running `"docker" "inspect" "c9690c00949fa9113d584cf9764f7cb17a9b6e641953263e7b571b27e1b58a44"`
[INFO] running `"docker" "rm" "-f" "c9690c00949fa9113d584cf9764f7cb17a9b6e641953263e7b571b27e1b58a44"`
[INFO] [stdout] c9690c00949fa9113d584cf9764f7cb17a9b6e641953263e7b571b27e1b58a44
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57967/worker-2/try#7fea0229842e79db1159ea58ad9a653b288efee9:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/gh/mtn/ipsum:/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" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "test" "--frozen" "--no-run"`
[INFO] [stdout] 474f05196d065829638e6a5c446561a23bd0669a00a145c7ddd8da4a0b326bcc
[INFO] running `"docker" "start" "-a" "474f05196d065829638e6a5c446561a23bd0669a00a145c7ddd8da4a0b326bcc"`
[INFO] [stderr]    Compiling ipsum v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: method is never used: `set_name`
[INFO] [stderr]   --> src/buffer.rs:42:5
[INFO] [stderr]    |
[INFO] [stderr] 42 |     pub fn set_name(&mut self, filename: &str) -> Option<Buffer> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `save`
[INFO] [stderr]   --> src/buffer.rs:60:5
[INFO] [stderr]    |
[INFO] [stderr] 60 |     pub fn save(&mut self) -> bool {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Insert`
[INFO] [stderr]  --> src/editor.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 |     Insert,
[INFO] [stderr]   |     ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `buffers`
[INFO] [stderr]   --> src/editor.rs:17:5
[INFO] [stderr]    |
[INFO] [stderr] 17 |     buffers: Vec<Buffer>,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `mode`
[INFO] [stderr]   --> src/editor.rs:19:5
[INFO] [stderr]    |
[INFO] [stderr] 19 |     mode: Mode,
[INFO] [stderr]    |     ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: the feature `extern_prelude` has been stable since 1.30.0 and no longer requires an attribute to enable
[INFO] [stderr]  --> src/main.rs:1:12
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(extern_prelude)]
[INFO] [stderr]   |            ^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(stable_features)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.47s
[INFO] running `"docker" "inspect" "474f05196d065829638e6a5c446561a23bd0669a00a145c7ddd8da4a0b326bcc"`
[INFO] running `"docker" "rm" "-f" "474f05196d065829638e6a5c446561a23bd0669a00a145c7ddd8da4a0b326bcc"`
[INFO] [stdout] 474f05196d065829638e6a5c446561a23bd0669a00a145c7ddd8da4a0b326bcc
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57967/worker-2/try#7fea0229842e79db1159ea58ad9a653b288efee9:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/gh/mtn/ipsum:/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" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "test" "--frozen"`
[INFO] [stdout] e9aa0c65f777574b38c40fcbecfa74f457e613b04b2f38ec6d7e482a0ec3337d
[INFO] running `"docker" "start" "-a" "e9aa0c65f777574b38c40fcbecfa74f457e613b04b2f38ec6d7e482a0ec3337d"`
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stdout] running 0 tests
[INFO] [stderr]      Running /opt/crater/target/debug/deps/ipsum-059796837d0a56fa
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "e9aa0c65f777574b38c40fcbecfa74f457e613b04b2f38ec6d7e482a0ec3337d"`
[INFO] running `"docker" "rm" "-f" "e9aa0c65f777574b38c40fcbecfa74f457e613b04b2f38ec6d7e482a0ec3337d"`
[INFO] [stdout] e9aa0c65f777574b38c40fcbecfa74f457e613b04b2f38ec6d7e482a0ec3337d