[INFO] fetching crate rev_buf_reader 0.2.0...
[INFO] testing rev_buf_reader-0.2.0 against master#5d5ff84130da0d74c6ece368dbe821d8f83fa526 for pr-79296
[INFO] extracting crate rev_buf_reader 0.2.0 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate rev_buf_reader 0.2.0 on toolchain 5d5ff84130da0d74c6ece368dbe821d8f83fa526
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5d5ff84130da0d74c6ece368dbe821d8f83fa526" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rev_buf_reader 0.2.0
[INFO] finished tweaking crates.io crate rev_buf_reader 0.2.0
[INFO] tweaked toml for crates.io crate rev_buf_reader 0.2.0 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5d5ff84130da0d74c6ece368dbe821d8f83fa526" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5d5ff84130da0d74c6ece368dbe821d8f83fa526" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+5d5ff84130da0d74c6ece368dbe821d8f83fa526" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 97c24ba063e0e2ea67f467a7413ef45bef0749207e2f9650c1531a36937eea98
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "97c24ba063e0e2ea67f467a7413ef45bef0749207e2f9650c1531a36937eea98", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "97c24ba063e0e2ea67f467a7413ef45bef0749207e2f9650c1531a36937eea98", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "97c24ba063e0e2ea67f467a7413ef45bef0749207e2f9650c1531a36937eea98", kill_on_drop: false }`
[INFO] [stdout] 97c24ba063e0e2ea67f467a7413ef45bef0749207e2f9650c1531a36937eea98
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+5d5ff84130da0d74c6ece368dbe821d8f83fa526" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] db2d91540a94f1cf7fc4bf4664fe6518136e3946d775b3a0e85ab2471fc48ceb
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "db2d91540a94f1cf7fc4bf4664fe6518136e3946d775b3a0e85ab2471fc48ceb", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling rev_buf_reader v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.47s
[INFO] running `Command { std: "docker" "inspect" "db2d91540a94f1cf7fc4bf4664fe6518136e3946d775b3a0e85ab2471fc48ceb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "db2d91540a94f1cf7fc4bf4664fe6518136e3946d775b3a0e85ab2471fc48ceb", kill_on_drop: false }`
[INFO] [stdout] db2d91540a94f1cf7fc4bf4664fe6518136e3946d775b3a0e85ab2471fc48ceb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+5d5ff84130da0d74c6ece368dbe821d8f83fa526" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4a02eb556a044d34ff52a48cae8008a475b1e904bae21e047e75c38f02f89df8
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "4a02eb556a044d34ff52a48cae8008a475b1e904bae21e047e75c38f02f89df8", kill_on_drop: false }`
[INFO] [stderr]    Compiling rev_buf_reader v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.56s
[INFO] running `Command { std: "docker" "inspect" "4a02eb556a044d34ff52a48cae8008a475b1e904bae21e047e75c38f02f89df8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4a02eb556a044d34ff52a48cae8008a475b1e904bae21e047e75c38f02f89df8", kill_on_drop: false }`
[INFO] [stdout] 4a02eb556a044d34ff52a48cae8008a475b1e904bae21e047e75c38f02f89df8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+5d5ff84130da0d74c6ece368dbe821d8f83fa526" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 7ae63d81436593fb95a7fc3cd03a76da17e8f31ee6c393cf3ec72a5bce6731fe
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "7ae63d81436593fb95a7fc3cd03a76da17e8f31ee6c393cf3ec72a5bce6731fe", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/rev_buf_reader-1c80d51c633439a5
[INFO] [stdout] running 10 tests
[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_lines ... ok
[INFO] [stdout] test tests::test_read_line ... ok
[INFO] [stdout] test tests::test_read_until ... ok
[INFO] [stdout] test tests::test_buffered_reader_seek_underflow_discard_buffer_between_seeks ... ok
[INFO] [stdout] test tests::test_buffered_reader_seek ... ok
[INFO] [stdout] test tests::test_buffered_reader_invalidated_after_seek ... ok
[INFO] [stdout] test tests::test_buffered_reader ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 10 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests rev_buf_reader
[INFO] [stdout] 
[INFO] [stdout] running 9 tests
[INFO] [stdout] test src/lib.rs - RevBufReader<R>::into_inner (line 359) ... ok
[INFO] [stdout] test src/lib.rs - RevBufReader (line 175) ... ok
[INFO] [stdout] test src/lib.rs - RevBufReader<R>::new (line 203) ... ok
[INFO] [stdout] test src/lib.rs - RevBufReader<R>::get_mut (line 310) ... ok
[INFO] [stdout] test src/lib.rs - RevBufReader<R>::get_ref (line 288) ... ok
[INFO] [stdout] test src/lib.rs - RevBufReader<R>::buffer (line 332) ... ok
[INFO] [stdout] test src/lib.rs - RevBufReader<R>::with_capacity (line 223) ... 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. 9 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "7ae63d81436593fb95a7fc3cd03a76da17e8f31ee6c393cf3ec72a5bce6731fe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7ae63d81436593fb95a7fc3cd03a76da17e8f31ee6c393cf3ec72a5bce6731fe", kill_on_drop: false }`
[INFO] [stdout] 7ae63d81436593fb95a7fc3cd03a76da17e8f31ee6c393cf3ec72a5bce6731fe