[INFO] fetching crate limit_read 0.2.0...
[INFO] testing limit_read-0.2.0 against try#b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b for pr-145330-1
[INFO] extracting crate limit_read 0.2.0 into /workspace/builds/worker-5-tc2/source
[INFO] started tweaking crates.io crate limit_read 0.2.0
[INFO] finished tweaking crates.io crate limit_read 0.2.0
[INFO] tweaked toml for crates.io crate limit_read 0.2.0 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate limit_read 0.2.0 on toolchain b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 1 package to latest compatible version
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c9393866dba60fa0458ce477ca54a4de05bf272edb1ef2a4710b4fdbe64f8722
[INFO] running `Command { std: "docker" "start" "-a" "c9393866dba60fa0458ce477ca54a4de05bf272edb1ef2a4710b4fdbe64f8722", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c9393866dba60fa0458ce477ca54a4de05bf272edb1ef2a4710b4fdbe64f8722", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c9393866dba60fa0458ce477ca54a4de05bf272edb1ef2a4710b4fdbe64f8722", kill_on_drop: false }`
[INFO] [stdout] c9393866dba60fa0458ce477ca54a4de05bf272edb1ef2a4710b4fdbe64f8722
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5d8a35edfbe7162321199fa4044904f7a76357c87ddcfbeed03da679095927f1
[INFO] running `Command { std: "docker" "start" "-a" "5d8a35edfbe7162321199fa4044904f7a76357c87ddcfbeed03da679095927f1", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.7.6
[INFO] [stderr]    Compiling limit_read v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.03s
[INFO] running `Command { std: "docker" "inspect" "5d8a35edfbe7162321199fa4044904f7a76357c87ddcfbeed03da679095927f1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5d8a35edfbe7162321199fa4044904f7a76357c87ddcfbeed03da679095927f1", kill_on_drop: false }`
[INFO] [stdout] 5d8a35edfbe7162321199fa4044904f7a76357c87ddcfbeed03da679095927f1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] aaf7b639286dac4842fd524b1bcd538b42fd2ced29cdaa48edec3e9f51d3df18
[INFO] running `Command { std: "docker" "start" "-a" "aaf7b639286dac4842fd524b1bcd538b42fd2ced29cdaa48edec3e9f51d3df18", kill_on_drop: false }`
[INFO] [stderr]    Compiling limit_read v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused return value of `Result::<T, E>::is_err` that must be used
[INFO] [stdout]    --> src/lib.rs:194:5
[INFO] [stdout]     |
[INFO] [stdout] 194 | /     buf_reader
[INFO] [stdout] 195 | |       .read_until_lim(';' as u8, &mut buf, &short_lim)
[INFO] [stdout] 196 | |       .is_err();
[INFO] [stdout]     | |_______________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: if you intended to assert that this is err, consider `.unwrap_err()` instead
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 194 |     let _ = buf_reader
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Result::<T, E>::is_err` that must be used
[INFO] [stdout]    --> src/lib.rs:215:5
[INFO] [stdout]     |
[INFO] [stdout] 215 |     buf_reader.read_line_lim(&mut buf, &short_lim).is_err();
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: if you intended to assert that this is err, consider `.unwrap_err()` instead
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 215 |     let _ = buf_reader.read_line_lim(&mut buf, &short_lim).is_err();
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.54s
[INFO] running `Command { std: "docker" "inspect" "aaf7b639286dac4842fd524b1bcd538b42fd2ced29cdaa48edec3e9f51d3df18", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aaf7b639286dac4842fd524b1bcd538b42fd2ced29cdaa48edec3e9f51d3df18", kill_on_drop: false }`
[INFO] [stdout] aaf7b639286dac4842fd524b1bcd538b42fd2ced29cdaa48edec3e9f51d3df18
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 04cddc04e9e3d7b5cab5fb75d025d6383edd153103259c07e9bdd6c5d0d7eef7
[INFO] running `Command { std: "docker" "start" "-a" "04cddc04e9e3d7b5cab5fb75d025d6383edd153103259c07e9bdd6c5d0d7eef7", kill_on_drop: false }`
[INFO] [stderr] warning: unused return value of `Result::<T, E>::is_err` that must be used
[INFO] [stderr]    --> src/lib.rs:194:5
[INFO] [stderr]     |
[INFO] [stderr] 194 | /     buf_reader
[INFO] [stderr] 195 | |       .read_until_lim(';' as u8, &mut buf, &short_lim)
[INFO] [stderr] 196 | |       .is_err();
[INFO] [stderr]     | |_______________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: if you intended to assert that this is err, consider `.unwrap_err()` instead
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]     |
[INFO] [stderr] 194 |     let _ = buf_reader
[INFO] [stderr]     |     +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `Result::<T, E>::is_err` that must be used
[INFO] [stderr]    --> src/lib.rs:215:5
[INFO] [stderr]     |
[INFO] [stderr] 215 |     buf_reader.read_line_lim(&mut buf, &short_lim).is_err();
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: if you intended to assert that this is err, consider `.unwrap_err()` instead
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]     |
[INFO] [stderr] 215 |     let _ = buf_reader.read_line_lim(&mut buf, &short_lim).is_err();
[INFO] [stderr]     |     +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: `limit_read` (lib test) generated 2 warnings
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/limit_read-696d49e524461ee1)
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test tests::lines_lim ... ok
[INFO] [stdout] test tests::read_line_lim ... ok
[INFO] [stdout] test tests::split_lim ... ok
[INFO] [stdout] test tests::read_until_lim ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests limit_read
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "04cddc04e9e3d7b5cab5fb75d025d6383edd153103259c07e9bdd6c5d0d7eef7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "04cddc04e9e3d7b5cab5fb75d025d6383edd153103259c07e9bdd6c5d0d7eef7", kill_on_drop: false }`
[INFO] [stdout] 04cddc04e9e3d7b5cab5fb75d025d6383edd153103259c07e9bdd6c5d0d7eef7