[INFO] fetching crate rev_buf_reader 0.3.0...
[INFO] testing rev_buf_reader-0.3.0 against try#b83b707f97d809763b7861afa7638871f3339a33 for pr-145838-1
[INFO] extracting crate rev_buf_reader 0.3.0 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate rev_buf_reader 0.3.0
[INFO] finished tweaking crates.io crate rev_buf_reader 0.3.0
[INFO] tweaked toml for crates.io crate rev_buf_reader 0.3.0 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate rev_buf_reader 0.3.0 on toolchain b83b707f97d809763b7861afa7638871f3339a33
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "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" "+b83b707f97d809763b7861afa7638871f3339a33" "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" "+b83b707f97d809763b7861afa7638871f3339a33" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6cc0d72c218232dd7fcd42be433c82f1ef257cf193f3e70b88baf89bd1d2db30
[INFO] running `Command { std: "docker" "start" "-a" "6cc0d72c218232dd7fcd42be433c82f1ef257cf193f3e70b88baf89bd1d2db30", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6cc0d72c218232dd7fcd42be433c82f1ef257cf193f3e70b88baf89bd1d2db30", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6cc0d72c218232dd7fcd42be433c82f1ef257cf193f3e70b88baf89bd1d2db30", kill_on_drop: false }`
[INFO] [stdout] 6cc0d72c218232dd7fcd42be433c82f1ef257cf193f3e70b88baf89bd1d2db30
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] dca237ff0aec9b8151f7e5ba57b2153c13fc1562cd3be5f7bb2eccef5d4dbefd
[INFO] running `Command { std: "docker" "start" "-a" "dca237ff0aec9b8151f7e5ba57b2153c13fc1562cd3be5f7bb2eccef5d4dbefd", kill_on_drop: false }`
[INFO] [stderr]    Compiling rev_buf_reader v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.16s
[INFO] running `Command { std: "docker" "inspect" "dca237ff0aec9b8151f7e5ba57b2153c13fc1562cd3be5f7bb2eccef5d4dbefd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dca237ff0aec9b8151f7e5ba57b2153c13fc1562cd3be5f7bb2eccef5d4dbefd", kill_on_drop: false }`
[INFO] [stdout] dca237ff0aec9b8151f7e5ba57b2153c13fc1562cd3be5f7bb2eccef5d4dbefd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cac2c8795cdc476c6391a04d22cf2668e0d651181b7bd6807104919e8a5ff96e
[INFO] running `Command { std: "docker" "start" "-a" "cac2c8795cdc476c6391a04d22cf2668e0d651181b7bd6807104919e8a5ff96e", kill_on_drop: false }`
[INFO] [stderr]    Compiling rev_buf_reader v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.71s
[INFO] running `Command { std: "docker" "inspect" "cac2c8795cdc476c6391a04d22cf2668e0d651181b7bd6807104919e8a5ff96e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cac2c8795cdc476c6391a04d22cf2668e0d651181b7bd6807104919e8a5ff96e", kill_on_drop: false }`
[INFO] [stdout] cac2c8795cdc476c6391a04d22cf2668e0d651181b7bd6807104919e8a5ff96e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] d037f9132841115d7adcbdb574d0153ab1173623835b92a6c04198744abde54c
[INFO] running `Command { std: "docker" "start" "-a" "d037f9132841115d7adcbdb574d0153ab1173623835b92a6c04198744abde54c", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/rev_buf_reader-3793904c20f4ad56)
[INFO] [stdout] 
[INFO] [stdout] running 10 tests
[INFO] [stdout] test tests::test_buffered_reader ... ok
[INFO] [stdout] test tests::test_buffered_reader_invalidated_after_read ... ok
[INFO] [stdout] test tests::test_buffered_reader_seek_relative ... ok
[INFO] [stdout] test tests::test_buffered_reader_seek_underflow ... ok
[INFO] [stdout] test tests::test_buffered_reader_seek ... ok
[INFO] [stdout] test tests::test_buffered_reader_seek_underflow_discard_buffer_between_seeks ... ok
[INFO] [stdout] test tests::test_buffered_reader_invalidated_after_seek ... ok
[INFO] [stdout] test tests::test_read_line ... ok
[INFO] [stdout] test tests::test_read_until ... ok
[INFO] [stdout] test tests::test_lines ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 10 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.34s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests rev_buf_reader
[INFO] [stdout] 
[INFO] [stdout] running 10 tests
[INFO] [stdout] test src/lib.rs - RevBufReader<R>::get_mut (line 222) - compile ... ok
[INFO] [stdout] test src/lib.rs - RevBufReader<R>::with_capacity (line 135) - compile ... ok
[INFO] [stdout] test src/lib.rs - RevBufReader (line 87) - compile ... ok
[INFO] [stdout] test src/lib.rs - RevBufReader<R>::buffer (line 246) - compile ... ok
[INFO] [stdout] test src/lib.rs - RevBufReader<R>::into_inner (line 297) - compile ... ok
[INFO] [stdout] test src/lib.rs - RevBufReader<R>::get_ref (line 200) - compile ... ok
[INFO] [stdout] test src/lib.rs - RevBufReader<R>::new (line 115) - compile ... ok
[INFO] [stdout] test src/lib.rs - RevBufReader<R>::capacity (line 270) - compile ... ok
[INFO] [stdout] test src/lib.rs - (line 10) ... ok
[INFO] [stdout] test src/lib.rs - (line 31) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 10 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.63s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "d037f9132841115d7adcbdb574d0153ab1173623835b92a6c04198744abde54c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d037f9132841115d7adcbdb574d0153ab1173623835b92a6c04198744abde54c", kill_on_drop: false }`
[INFO] [stdout] d037f9132841115d7adcbdb574d0153ab1173623835b92a6c04198744abde54c