[INFO] updating cached repository https://github.com/andysalerno/toygrep
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 9368da78cc95f5def1de1d6610fb0057876f9ba2
[INFO] testing andysalerno/toygrep against master#28742a1146f10a4f09369baad027a464acb7a766 for pr-71274
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fandysalerno%2Ftoygrep" "/workspace/builds/worker-0/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/andysalerno/toygrep on toolchain 28742a1146f10a4f09369baad027a464acb7a766
[INFO] running `"/workspace/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/andysalerno/toygrep
[INFO] finished tweaking git repo https://github.com/andysalerno/toygrep
[INFO] tweaked toml for git repo https://github.com/andysalerno/toygrep written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/andysalerno/toygrep already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "build" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] c83d73f5c514577cc0dc21ab929518cadc7dc2279fc52d7ec4340f33dea1ff7d
[INFO] running `"docker" "start" "-a" "c83d73f5c514577cc0dc21ab929518cadc7dc2279fc52d7ec4340f33dea1ff7d"`
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.9
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling syn v1.0.16
[INFO] [stderr]    Compiling slab v0.4.2
[INFO] [stderr]    Compiling scopeguard v1.1.0
[INFO] [stderr]    Compiling futures-core v0.3.4
[INFO] [stderr]    Compiling regex-syntax v0.6.14
[INFO] [stderr]    Compiling pin-utils v0.1.0-alpha.4
[INFO] [stderr]    Compiling once_cell v1.3.1
[INFO] [stderr]    Compiling futures-timer v2.0.2
[INFO] [stderr]    Compiling futures-io v0.3.4
[INFO] [stderr]    Compiling pin-project-lite v0.1.4
[INFO] [stderr]    Compiling peeking_take_while v0.1.2
[INFO] [stderr]    Compiling termcolor v1.1.0
[INFO] [stderr]    Compiling thread_local v1.0.1
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling iovec v0.1.4
[INFO] [stderr]    Compiling net2 v0.2.33
[INFO] [stderr]    Compiling num_cpus v1.12.0
[INFO] [stderr]    Compiling async-task v1.3.1
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling kv-log-macro v1.0.4
[INFO] [stderr]    Compiling aho-corasick v0.7.8
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]    Compiling mio v0.6.21
[INFO] [stderr]    Compiling memoffset v0.5.3
[INFO] [stderr]    Compiling mio-uds v0.6.7
[INFO] [stderr]    Compiling crossbeam-channel v0.4.2
[INFO] [stderr]    Compiling crossbeam-deque v0.7.3
[INFO] [stderr]    Compiling regex v1.3.4
[INFO] [stderr]    Compiling async-attributes v1.1.1
[INFO] [stderr]    Compiling async-std v1.5.0
[INFO] [stderr]    Compiling toygrep v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: method is never used: `with_line_break_byte`
[INFO] [stderr]   --> src/buffer/async_line_buffer.rs:39:5
[INFO] [stderr]    |
[INFO] [stderr] 39 |     pub(crate) fn with_line_break_byte(mut self, line_break_byte: u8) -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `with_start_size_bytes`
[INFO] [stderr]   --> src/buffer/async_line_buffer.rs:44:5
[INFO] [stderr]    |
[INFO] [stderr] 44 |     pub(crate) fn with_start_size_bytes(mut self, start_size_bytes: usize) -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Display`
[INFO] [stderr]   --> src/print.rs:52:5
[INFO] [stderr]    |
[INFO] [stderr] 52 |     Display(String),
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `is_stdin`
[INFO] [stderr]   --> src/target.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 |     pub(crate) fn is_stdin(&self) -> bool {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 4 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 07s
[INFO] running `"docker" "inspect" "c83d73f5c514577cc0dc21ab929518cadc7dc2279fc52d7ec4340f33dea1ff7d"`
[INFO] running `"docker" "rm" "-f" "c83d73f5c514577cc0dc21ab929518cadc7dc2279fc52d7ec4340f33dea1ff7d"`
[INFO] [stdout] c83d73f5c514577cc0dc21ab929518cadc7dc2279fc52d7ec4340f33dea1ff7d
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "test" "--frozen" "--no-run"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] debadc6841e1100f4b618586d1bf146f097076495ccafc649d865951549f5b04
[INFO] running `"docker" "start" "-a" "debadc6841e1100f4b618586d1bf146f097076495ccafc649d865951549f5b04"`
[INFO] [stderr]    Compiling toygrep v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: method is never used: `with_line_break_byte`
[INFO] [stderr]   --> src/buffer/async_line_buffer.rs:39:5
[INFO] [stderr]    |
[INFO] [stderr] 39 |     pub(crate) fn with_line_break_byte(mut self, line_break_byte: u8) -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Display`
[INFO] [stderr]   --> src/print.rs:52:5
[INFO] [stderr]    |
[INFO] [stderr] 52 |     Display(String),
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `is_stdin`
[INFO] [stderr]   --> src/target.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 |     pub(crate) fn is_stdin(&self) -> bool {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 3 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 3.72s
[INFO] running `"docker" "inspect" "debadc6841e1100f4b618586d1bf146f097076495ccafc649d865951549f5b04"`
[INFO] running `"docker" "rm" "-f" "debadc6841e1100f4b618586d1bf146f097076495ccafc649d865951549f5b04"`
[INFO] [stdout] debadc6841e1100f4b618586d1bf146f097076495ccafc649d865951549f5b04
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "test" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] fbf55f1f1578788c610cc95397c7fed2a1535f3adb21c989f934ceb0d24eeeaa
[INFO] running `"docker" "start" "-a" "fbf55f1f1578788c610cc95397c7fed2a1535f3adb21c989f934ceb0d24eeeaa"`
[INFO] [stderr] warning: method is never used: `with_line_break_byte`
[INFO] [stderr]   --> src/buffer/async_line_buffer.rs:39:5
[INFO] [stderr]    |
[INFO] [stderr] 39 |     pub(crate) fn with_line_break_byte(mut self, line_break_byte: u8) -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Display`
[INFO] [stderr]   --> src/print.rs:52:5
[INFO] [stderr]    |
[INFO] [stderr] 52 |     Display(String),
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `is_stdin`
[INFO] [stderr]   --> src/target.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 |     pub(crate) fn is_stdin(&self) -> bool {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 3 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.08s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/toygrep-5fa812b630bf8eab
[INFO] [stdout] 
[INFO] [stdout] running 11 tests
[INFO] [stdout] test buffer::async_line_buffer::test::buffer_handles_single_byte_str ... ok
[INFO] [stdout] test buffer::async_line_buffer::test::buffer_gives_none_when_no_more_lines_big_buffer ... ok
[INFO] [stdout] test buffer::async_line_buffer::test::buffer_handles_empty_string ... ok
[INFO] [stdout] test buffer::async_line_buffer::test::buffer_handles_multiple_newline ... ok
[INFO] [stdout] test buffer::async_line_buffer::test::buffer_macbeth ... ok
[INFO] [stdout] test buffer::async_line_buffer::test::buffer_reads_simple_text_one_linebreak ... ok
[INFO] [stdout] test buffer::async_line_buffer::test::buffer_reads_simple_text_no_linebreak ... ok
[INFO] [stdout] test buffer::async_line_buffer::test::buffer_reads_simple_text_tiny_buffer ... ok
[INFO] [stdout] test buffer::async_line_buffer::test::buffer_handles_single_newline ... ok
[INFO] [stdout] test buffer::async_line_buffer::test::buffer_gives_none_when_no_more_lines_tiny_buffer ... ok
[INFO] [stdout] test buffer::async_line_buffer::test::buffer_reads_simple_text_two_lines_tiny_buffer ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 11 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "fbf55f1f1578788c610cc95397c7fed2a1535f3adb21c989f934ceb0d24eeeaa"`
[INFO] running `"docker" "rm" "-f" "fbf55f1f1578788c610cc95397c7fed2a1535f3adb21c989f934ceb0d24eeeaa"`
[INFO] [stdout] fbf55f1f1578788c610cc95397c7fed2a1535f3adb21c989f934ceb0d24eeeaa