[INFO] cloning repository Emerentius/drain_experiments
[INFO] running `"git" "clone" "--bare" "git://github.com/Emerentius/drain_experiments.git" "work/cache/sources/gh/Emerentius/drain_experiments"`
[INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/Emerentius/drain_experiments'...
[INFO] running `"git" "clone" "work/cache/sources/gh/Emerentius/drain_experiments" "work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/Emerentius/drain_experiments"`
[INFO] [stderr] Cloning into 'work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/Emerentius/drain_experiments'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/Emerentius/drain_experiments" "work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/Emerentius/drain_experiments"`
[INFO] [stderr] Cloning into 'work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/Emerentius/drain_experiments'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 5d693978cc0ae5cbb701145ae3d12f15e8ac80e7
[INFO] sha for GitHub repo Emerentius/drain_experiments: 5d693978cc0ae5cbb701145ae3d12f15e8ac80e7
[INFO] validating manifest of Emerentius/drain_experiments on toolchain master#c8865d8e195813ade6b84434ac9f8850e7112d1a
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of Emerentius/drain_experiments on toolchain try#e212b7d492c96d3837691ba29d32d5f468933fb8
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing Emerentius/drain_experiments
[INFO] finished frobbing Emerentius/drain_experiments
[INFO] frobbed toml for Emerentius/drain_experiments written to work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/Emerentius/drain_experiments/Cargo.toml
[INFO] started frobbing Emerentius/drain_experiments
[INFO] finished frobbing Emerentius/drain_experiments
[INFO] frobbed toml for Emerentius/drain_experiments written to work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/Emerentius/drain_experiments/Cargo.toml
[INFO] crate Emerentius/drain_experiments already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing Emerentius/drain_experiments against try#e212b7d492c96d3837691ba29d32d5f468933fb8 for pr-61629
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61629/worker-4/try#e212b7d492c96d3837691ba29d32d5f468933fb8:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/Emerentius/drain_experiments:/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" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "build" "--frozen"`
[INFO] [stdout] 5f4e1d498f781e290526341d541a80bef615e3c0dc09a21a44ee5ddb00a3f9bf
[INFO] running `"docker" "start" "-a" "5f4e1d498f781e290526341d541a80bef615e3c0dc09a21a44ee5ddb00a3f9bf"`
[INFO] [stderr]    Compiling try_drain v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused imports: `Exhausting`, `IteratorExt`
[INFO] [stderr]   --> src/lib.rs:11:18
[INFO] [stderr]    |
[INFO] [stderr] 11 | use exhausting::{Exhausting, IteratorExt};
[INFO] [stderr]    |                  ^^^^^^^^^^  ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `StreamElement`
[INFO] [stderr]   --> src/lib.rs:14:44
[INFO] [stderr]    |
[INFO] [stderr] 14 | use drain_element_streaming::{StreamDrain, StreamElement};
[INFO] [stderr]    |                                            ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `CursorIter`
[INFO] [stderr]   --> src/lib.rs:17:22
[INFO] [stderr]    |
[INFO] [stderr] 17 | use cursor::{Cursor, CursorIter};
[INFO] [stderr]    |                      ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `rg`
[INFO] [stderr]   --> src/lib.rs:58:24
[INFO] [stderr]    |
[INFO] [stderr] 58 |     pub fn range(self, rg: std::ops::Range<usize>) -> Self {
[INFO] [stderr]    |                        ^^ help: consider prefixing with an underscore: `_rg`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `take`
[INFO] [stderr]    --> src/cursor.rs:225:5
[INFO] [stderr]     |
[INFO] [stderr] 225 |     fn take(self) -> T {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.45s
[INFO] running `"docker" "inspect" "5f4e1d498f781e290526341d541a80bef615e3c0dc09a21a44ee5ddb00a3f9bf"`
[INFO] running `"docker" "rm" "-f" "5f4e1d498f781e290526341d541a80bef615e3c0dc09a21a44ee5ddb00a3f9bf"`
[INFO] [stdout] 5f4e1d498f781e290526341d541a80bef615e3c0dc09a21a44ee5ddb00a3f9bf
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61629/worker-4/try#e212b7d492c96d3837691ba29d32d5f468933fb8:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/Emerentius/drain_experiments:/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" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "test" "--frozen" "--no-run"`
[INFO] [stdout] 58a0982f8e7180893ae7c9e434d26a03fe5b5a2460e2daebb177c9b76bfdcf98
[INFO] running `"docker" "start" "-a" "58a0982f8e7180893ae7c9e434d26a03fe5b5a2460e2daebb177c9b76bfdcf98"`
[INFO] [stderr]    Compiling try_drain v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused imports: `Exhausting`, `IteratorExt`
[INFO] [stderr]   --> src/lib.rs:11:18
[INFO] [stderr]    |
[INFO] [stderr] 11 | use exhausting::{Exhausting, IteratorExt};
[INFO] [stderr]    |                  ^^^^^^^^^^  ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `StreamElement`
[INFO] [stderr]   --> src/lib.rs:14:44
[INFO] [stderr]    |
[INFO] [stderr] 14 | use drain_element_streaming::{StreamDrain, StreamElement};
[INFO] [stderr]    |                                            ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `CursorIter`
[INFO] [stderr]   --> src/lib.rs:17:22
[INFO] [stderr]    |
[INFO] [stderr] 17 | use cursor::{Cursor, CursorIter};
[INFO] [stderr]    |                      ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `rg`
[INFO] [stderr]   --> src/lib.rs:58:24
[INFO] [stderr]    |
[INFO] [stderr] 58 |     pub fn range(self, rg: std::ops::Range<usize>) -> Self {
[INFO] [stderr]    |                        ^^ help: consider prefixing with an underscore: `_rg`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `take`
[INFO] [stderr]    --> src/cursor.rs:225:5
[INFO] [stderr]     |
[INFO] [stderr] 225 |     fn take(self) -> T {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.30s
[INFO] running `"docker" "inspect" "58a0982f8e7180893ae7c9e434d26a03fe5b5a2460e2daebb177c9b76bfdcf98"`
[INFO] running `"docker" "rm" "-f" "58a0982f8e7180893ae7c9e434d26a03fe5b5a2460e2daebb177c9b76bfdcf98"`
[INFO] [stdout] 58a0982f8e7180893ae7c9e434d26a03fe5b5a2460e2daebb177c9b76bfdcf98
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61629/worker-4/try#e212b7d492c96d3837691ba29d32d5f468933fb8:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/Emerentius/drain_experiments:/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" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "test" "--frozen"`
[INFO] [stdout] c8d8b7c4cffd8c2bf75fe0a1b935b20f6597d2af60f25c185d92de4cd9408af4
[INFO] running `"docker" "start" "-a" "c8d8b7c4cffd8c2bf75fe0a1b935b20f6597d2af60f25c185d92de4cd9408af4"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/try_drain-8ba86da3747a49a0
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/lib-2749b384f9bd459f
[INFO] [stdout] 
[INFO] [stdout] running 19 tests
[INFO] [stdout] test _0d_bomb_elem_try_drain ... ok
[INFO] [stdout] test _0a_noop ... ok
[INFO] [stdout] test _0f_bomb_cursor ... ok
[INFO] [stdout] test _0b_bomb_drain ... ok
[INFO] [stdout] test _0e_bomb_stream_drain ... ok
[INFO] [stdout] test _0f_bomb_cursor_iter ... ok
[INFO] [stdout] test _0c_bomb_drain_filter ... ok
[INFO] [stdout] test _0d_bomb_try_drain ... ok
[INFO] [stdout] test _0d_bomb_elem_move_drain ... ok
[INFO] [stdout] test _1a_noop ... ok
[INFO] [stdout] test _1b_exhaust_string_drain ... ok
[INFO] [stdout] test _1c_exhaust_string_drain_filter ... ok
[INFO] [stdout] test _1d_exhaust_string_elem_move_drain ... ok
[INFO] [stdout] test _1d_exhaust_string_elem_try_drain ... ok
[INFO] [stdout] test _1f_exhaust_string_cursor ... ok
[INFO] [stdout] test _1e_exhaust_string_stream_drain ... ok
[INFO] [stdout] test _1d_exhaust_string_try_drain ... ok
[INFO] [stdout] test _1f_exhaust_string_cursor_clear ... ok
[INFO] [stdout] test _1f_exhaust_string_cursor_iter ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 19 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests try_drain
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "c8d8b7c4cffd8c2bf75fe0a1b935b20f6597d2af60f25c185d92de4cd9408af4"`
[INFO] running `"docker" "rm" "-f" "c8d8b7c4cffd8c2bf75fe0a1b935b20f6597d2af60f25c185d92de4cd9408af4"`
[INFO] [stdout] c8d8b7c4cffd8c2bf75fe0a1b935b20f6597d2af60f25c185d92de4cd9408af4