[INFO] crate tail 0.3.0 is already in cache [INFO] testing tail-0.3.0 against master#28742a1146f10a4f09369baad027a464acb7a766 for pr-71274 [INFO] extracting crate tail 0.3.0 into /workspace/builds/worker-12/source [INFO] validating manifest of crates.io crate tail 0.3.0 on toolchain 28742a1146f10a4f09369baad027a464acb7a766 [INFO] running `"/workspace/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started tweaking crates.io crate tail 0.3.0 [INFO] finished tweaking crates.io crate tail 0.3.0 [INFO] tweaked toml for crates.io crate tail 0.3.0 written to /workspace/builds/worker-12/source/Cargo.toml [INFO] running `"/workspace/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"` [INFO] [stderr] Blocking waiting for file lock on package cache [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-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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] 7076a140c8c53bf32bdd1cd180c50876ba5dd2dcc70272bf5bd78e466c9a2ebb [INFO] running `"docker" "start" "-a" "7076a140c8c53bf32bdd1cd180c50876ba5dd2dcc70272bf5bd78e466c9a2ebb"` [INFO] [stderr] Compiling bitflags v1.2.1 [INFO] [stderr] Compiling futures v0.1.29 [INFO] [stderr] Compiling unicode-width v0.1.7 [INFO] [stderr] Compiling inotify-sys v0.1.3 [INFO] [stderr] Compiling getopts v0.2.21 [INFO] [stderr] Compiling inotify v0.5.1 [INFO] [stderr] Compiling tail v0.3.0 (/opt/rustwide/workdir) [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/main.rs:88:13 [INFO] [stderr] | [INFO] [stderr] 88 | let mut wd = watcher.add_watch(Path::new(&file_name), WatchMask::MODIFY) [INFO] [stderr] | ----^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_mut)]` on by default [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/main.rs:90:13 [INFO] [stderr] | [INFO] [stderr] 90 | let mut fd = File::open(&file_name) [INFO] [stderr] | ----^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: 2 warnings emitted [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 9.50s [INFO] running `"docker" "inspect" "7076a140c8c53bf32bdd1cd180c50876ba5dd2dcc70272bf5bd78e466c9a2ebb"` [INFO] running `"docker" "rm" "-f" "7076a140c8c53bf32bdd1cd180c50876ba5dd2dcc70272bf5bd78e466c9a2ebb"` [INFO] [stdout] 7076a140c8c53bf32bdd1cd180c50876ba5dd2dcc70272bf5bd78e466c9a2ebb [INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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] 8c1a22730864a8ee0276a7bceda8bbcf9b0521cab6f6efc31aa044daa69e1b3b [INFO] running `"docker" "start" "-a" "8c1a22730864a8ee0276a7bceda8bbcf9b0521cab6f6efc31aa044daa69e1b3b"` [INFO] [stderr] Compiling tail v0.3.0 (/opt/rustwide/workdir) [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/main.rs:88:13 [INFO] [stderr] | [INFO] [stderr] 88 | let mut wd = watcher.add_watch(Path::new(&file_name), WatchMask::MODIFY) [INFO] [stderr] | ----^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_mut)]` on by default [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/main.rs:90:13 [INFO] [stderr] | [INFO] [stderr] 90 | let mut fd = File::open(&file_name) [INFO] [stderr] | ----^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: 2 warnings emitted [INFO] [stderr] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 1.51s [INFO] running `"docker" "inspect" "8c1a22730864a8ee0276a7bceda8bbcf9b0521cab6f6efc31aa044daa69e1b3b"` [INFO] running `"docker" "rm" "-f" "8c1a22730864a8ee0276a7bceda8bbcf9b0521cab6f6efc31aa044daa69e1b3b"` [INFO] [stdout] 8c1a22730864a8ee0276a7bceda8bbcf9b0521cab6f6efc31aa044daa69e1b3b [INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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] 690db3560d15baee786e3c4decd55f5eae7f9725955c78c35273c9c10b042b0c [INFO] running `"docker" "start" "-a" "690db3560d15baee786e3c4decd55f5eae7f9725955c78c35273c9c10b042b0c"` [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/main.rs:88:13 [INFO] [stderr] | [INFO] [stderr] 88 | let mut wd = watcher.add_watch(Path::new(&file_name), WatchMask::MODIFY) [INFO] [stderr] | ----^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_mut)]` on by default [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/main.rs:90:13 [INFO] [stderr] | [INFO] [stderr] 90 | let mut fd = File::open(&file_name) [INFO] [stderr] | ----^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: 2 warnings emitted [INFO] [stderr] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.25s [INFO] [stderr] Running /opt/rustwide/target/debug/deps/tail-15e4aedf08b827c7 [INFO] [stderr] Running /opt/rustwide/target/debug/deps/tail-5f310f0f1b3876ef [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] [stdout] [INFO] [stderr] Doc-tests tail [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] [stdout] [INFO] [stdout] running 1 test [INFO] [stderr] error: test failed, to rerun pass '--doc' [INFO] [stdout] test src/lib.rs - BackwardsReader (line 23) ... FAILED [INFO] [stdout] [INFO] [stdout] failures: [INFO] [stdout] [INFO] [stdout] ---- src/lib.rs - BackwardsReader (line 23) stdout ---- [INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type or module `BufWriter` [INFO] [stdout] --> src/lib.rs:24:18 [INFO] [stdout] | [INFO] [stdout] 3 | let mut writer = BufWriter::new(std::io::stdout()); [INFO] [stdout] | ^^^^^^^^^ use of undeclared type or module `BufWriter` [INFO] [stdout] [INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type or module `BackwardsReader` [INFO] [stdout] --> src/lib.rs:25:18 [INFO] [stdout] | [INFO] [stdout] 4 | let mut reader = BackwardsReader::new(10, &mut writer); [INFO] [stdout] | ^^^^^^^^^^^^^^^ use of undeclared type or module `BackwardsReader` [INFO] [stdout] [INFO] [stdout] error: aborting due to 2 previous errors [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0433`. [INFO] [stdout] Couldn't compile the test. [INFO] [stdout] [INFO] [stdout] failures: [INFO] [stdout] src/lib.rs - BackwardsReader (line 23) [INFO] [stdout] [INFO] [stdout] test result: FAILED. 0 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out [INFO] [stdout] [INFO] running `"docker" "inspect" "690db3560d15baee786e3c4decd55f5eae7f9725955c78c35273c9c10b042b0c"` [INFO] running `"docker" "rm" "-f" "690db3560d15baee786e3c4decd55f5eae7f9725955c78c35273c9c10b042b0c"` [INFO] [stdout] 690db3560d15baee786e3c4decd55f5eae7f9725955c78c35273c9c10b042b0c