[INFO] updating cached repository Emerentius/drain_experiments
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/Emerentius/drain_experiments
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/Emerentius/drain_experiments" "work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/gh/Emerentius/drain_experiments"`
[INFO] [stderr] Cloning into 'work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/gh/Emerentius/drain_experiments'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/Emerentius/drain_experiments" "work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/gh/Emerentius/drain_experiments"`
[INFO] [stderr] Cloning into 'work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/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#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of Emerentius/drain_experiments 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 Emerentius/drain_experiments
[INFO] finished frobbing Emerentius/drain_experiments
[INFO] frobbed toml for Emerentius/drain_experiments written to work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/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-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/gh/Emerentius/drain_experiments/Cargo.toml
[INFO] crate Emerentius/drain_experiments 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 Emerentius/drain_experiments against try#7fea0229842e79db1159ea58ad9a653b288efee9 for pr-57967
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57967/worker-6/try#7fea0229842e79db1159ea58ad9a653b288efee9:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/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" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "build" "--frozen"`
[INFO] [stdout] 6562b18c59519619f7e3e6283d47ae16e2c16313547b40365307fab4a0236b80
[INFO] running `"docker" "start" "-a" "6562b18c59519619f7e3e6283d47ae16e2c16313547b40365307fab4a0236b80"`
[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 0.37s
[INFO] running `"docker" "inspect" "6562b18c59519619f7e3e6283d47ae16e2c16313547b40365307fab4a0236b80"`
[INFO] running `"docker" "rm" "-f" "6562b18c59519619f7e3e6283d47ae16e2c16313547b40365307fab4a0236b80"`
[INFO] [stdout] 6562b18c59519619f7e3e6283d47ae16e2c16313547b40365307fab4a0236b80
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57967/worker-6/try#7fea0229842e79db1159ea58ad9a653b288efee9:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/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" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "test" "--frozen" "--no-run"`
[INFO] [stdout] 61be5af822bba08d4980acc222f6ef37d0416395db36064538e69f0db4dcd2e9
[INFO] running `"docker" "start" "-a" "61be5af822bba08d4980acc222f6ef37d0416395db36064538e69f0db4dcd2e9"`
[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 1.37s
[INFO] running `"docker" "inspect" "61be5af822bba08d4980acc222f6ef37d0416395db36064538e69f0db4dcd2e9"`
[INFO] running `"docker" "rm" "-f" "61be5af822bba08d4980acc222f6ef37d0416395db36064538e69f0db4dcd2e9"`
[INFO] [stdout] 61be5af822bba08d4980acc222f6ef37d0416395db36064538e69f0db4dcd2e9
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57967/worker-6/try#7fea0229842e79db1159ea58ad9a653b288efee9:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/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" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "test" "--frozen"`
[INFO] [stdout] 18eb0cd211adcbb62833e76bc67126e64aea2458e94ebc1946839972de70968d
[INFO] running `"docker" "start" "-a" "18eb0cd211adcbb62833e76bc67126e64aea2458e94ebc1946839972de70968d"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/try_drain-f8d024309b393d85
[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-3c107993b516b055
[INFO] [stdout] 
[INFO] [stdout] running 19 tests
[INFO] [stdout] test _0d_bomb_elem_move_drain ... ok
[INFO] [stdout] test _0a_noop ... ok
[INFO] [stdout] test _0b_bomb_drain ... ok
[INFO] [stdout] test _0d_bomb_try_drain ... ok
[INFO] [stdout] test _0c_bomb_drain_filter ... ok
[INFO] [stdout] test _0d_bomb_elem_try_drain ... ok
[INFO] [stdout] test _0e_bomb_stream_drain ... ok
[INFO] [stdout] test _0f_bomb_cursor ... ok
[INFO] [stdout] test _0f_bomb_cursor_iter ... ok
[INFO] [stdout] test _1d_exhaust_string_elem_move_drain ... ok
[INFO] [stdout] test _1b_exhaust_string_drain ... ok
[INFO] [stdout] test _1a_noop ... ok
[INFO] [stdout] test _1c_exhaust_string_drain_filter ... ok
[INFO] [stdout] test _1e_exhaust_string_stream_drain ... ok
[INFO] [stdout] test _1d_exhaust_string_elem_try_drain ... ok
[INFO] [stdout] test _1f_exhaust_string_cursor ... 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" "18eb0cd211adcbb62833e76bc67126e64aea2458e94ebc1946839972de70968d"`
[INFO] running `"docker" "rm" "-f" "18eb0cd211adcbb62833e76bc67126e64aea2458e94ebc1946839972de70968d"`
[INFO] [stdout] 18eb0cd211adcbb62833e76bc67126e64aea2458e94ebc1946839972de70968d