[INFO] crate variable_size_byte_writer 0.1.5 is already in cache [INFO] testing variable_size_byte_writer-0.1.5 against try#41997647ba6a77908f6ef64401414feb00bccf16 for pr-71274 [INFO] extracting crate variable_size_byte_writer 0.1.5 into /workspace/builds/worker-3/source [INFO] validating manifest of crates.io crate variable_size_byte_writer 0.1.5 on toolchain 41997647ba6a77908f6ef64401414feb00bccf16 [INFO] running `"/workspace/cargo-home/bin/cargo" "+41997647ba6a77908f6ef64401414feb00bccf16" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started tweaking crates.io crate variable_size_byte_writer 0.1.5 [INFO] finished tweaking crates.io crate variable_size_byte_writer 0.1.5 [INFO] tweaked toml for crates.io crate variable_size_byte_writer 0.1.5 written to /workspace/builds/worker-3/source/Cargo.toml [INFO] running `"/workspace/cargo-home/bin/cargo" "+41997647ba6a77908f6ef64401414feb00bccf16" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"` [INFO] running `"/workspace/cargo-home/bin/cargo" "+41997647ba6a77908f6ef64401414feb00bccf16" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+41997647ba6a77908f6ef64401414feb00bccf16" "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] 22842fed6f084546bc37bb329bdd1423ea01cef886112016ebb7fb8ce5323cb9 [INFO] running `"docker" "start" "-a" "22842fed6f084546bc37bb329bdd1423ea01cef886112016ebb7fb8ce5323cb9"` [INFO] [stderr] Compiling typenum_loops v0.2.0 [INFO] [stderr] Compiling variable_size_byte_writer v0.1.5 (/opt/rustwide/workdir) [INFO] [stderr] warning: unnecessary parentheses around block return value [INFO] [stderr] --> src/lib.rs:294:9 [INFO] [stderr] | [INFO] [stderr] 294 | (self.bits % 8) [INFO] [stderr] | ^^^^^^^^^^^^^^^ help: remove these parentheses [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_parens)]` on by default [INFO] [stderr] [INFO] [stderr] warning: 1 warning emitted [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.75s [INFO] running `"docker" "inspect" "22842fed6f084546bc37bb329bdd1423ea01cef886112016ebb7fb8ce5323cb9"` [INFO] running `"docker" "rm" "-f" "22842fed6f084546bc37bb329bdd1423ea01cef886112016ebb7fb8ce5323cb9"` [INFO] [stdout] 22842fed6f084546bc37bb329bdd1423ea01cef886112016ebb7fb8ce5323cb9 [INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+41997647ba6a77908f6ef64401414feb00bccf16" "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] 240f1188a62934a7a6a596c7587c8126c774e642cb7e0b882c9c6a378a71446e [INFO] running `"docker" "start" "-a" "240f1188a62934a7a6a596c7587c8126c774e642cb7e0b882c9c6a378a71446e"` [INFO] [stderr] Compiling variable_size_byte_writer v0.1.5 (/opt/rustwide/workdir) [INFO] [stderr] warning: unnecessary parentheses around block return value [INFO] [stderr] --> src/lib.rs:294:9 [INFO] [stderr] | [INFO] [stderr] 294 | (self.bits % 8) [INFO] [stderr] | ^^^^^^^^^^^^^^^ help: remove these parentheses [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_parens)]` on by default [INFO] [stderr] [INFO] [stderr] warning: 1 warning emitted [INFO] [stderr] [INFO] [stderr] warning: unnecessary parentheses around block return value [INFO] [stderr] --> src/lib.rs:294:9 [INFO] [stderr] | [INFO] [stderr] 294 | (self.bits % 8) [INFO] [stderr] | ^^^^^^^^^^^^^^^ help: remove these parentheses [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_parens)]` on by default [INFO] [stderr] [INFO] [stderr] warning: 1 warning emitted [INFO] [stderr] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 1.42s [INFO] running `"docker" "inspect" "240f1188a62934a7a6a596c7587c8126c774e642cb7e0b882c9c6a378a71446e"` [INFO] running `"docker" "rm" "-f" "240f1188a62934a7a6a596c7587c8126c774e642cb7e0b882c9c6a378a71446e"` [INFO] [stdout] 240f1188a62934a7a6a596c7587c8126c774e642cb7e0b882c9c6a378a71446e [INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+41997647ba6a77908f6ef64401414feb00bccf16" "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] df05d79d3109a47487651a84e8042845618732448f4cfaaddca2bcb02805e6f7 [INFO] running `"docker" "start" "-a" "df05d79d3109a47487651a84e8042845618732448f4cfaaddca2bcb02805e6f7"` [INFO] [stderr] warning: unnecessary parentheses around block return value [INFO] [stderr] --> src/lib.rs:294:9 [INFO] [stderr] | [INFO] [stderr] 294 | (self.bits % 8) [INFO] [stderr] | ^^^^^^^^^^^^^^^ help: remove these parentheses [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_parens)]` on by default [INFO] [stderr] [INFO] [stderr] warning: 1 warning emitted [INFO] [stderr] [INFO] [stderr] warning: unnecessary parentheses around block return value [INFO] [stderr] --> src/lib.rs:294:9 [INFO] [stderr] | [INFO] [stderr] 294 | (self.bits % 8) [INFO] [stderr] | ^^^^^^^^^^^^^^^ help: remove these parentheses [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_parens)]` on by default [INFO] [stderr] [INFO] [stderr] warning: 1 warning emitted [INFO] [stderr] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.08s [INFO] [stderr] Running /opt/rustwide/target/debug/deps/variable_size_byte_writer-9041b816e0445fb6 [INFO] [stdout] [INFO] [stdout] running 17 tests [INFO] [stdout] test tests::test_can_insert ... ok [INFO] [stdout] test tests::test_all_bytes ... ok [INFO] [stdout] test tests::test_complete_bytes ... ok [INFO] [stdout] test tests::test_erase_all_bytes ... ok [INFO] [stdout] test tests::test_erase_complete_bytes ... ok [INFO] [stdout] test tests::test_flush_complete_bytes ... ok [INFO] [stdout] test tests::test_flush ... ok [INFO] [stdout] test tests::test_insert ... ok [INFO] [stdout] test tests::test_move_range_to_start ... ok [INFO] [stdout] test tests::test_new ... ok [INFO] [stdout] test tests::test_partial_bits ... ok [INFO] [stdout] test tests::test_padding ... ok [INFO] [stdout] test tests::test_partial_byte ... ok [INFO] [stdout] test tests::test_write ... ok [INFO] [stdout] test tests::test_with_capacity ... ok [INFO] [stdout] test tests::test_write_range ... ok [INFO] [stdout] test tests::test_drop ... FAILED [INFO] [stdout] [INFO] [stdout] failures: [INFO] [stdout] [INFO] [stdout] ---- tests::test_drop stdout ---- [INFO] [stdout] thread 'tests::test_drop' panicked at 'called `Result::unwrap()` on an `Err` value: Os { code: 30, kind: Other, message: "Read-only file system" }', src/lib.rs:562:24 [INFO] [stdout] stack backtrace: [INFO] [stdout] 0: 0x55ca0c565244 - backtrace::backtrace::libunwind::trace::h61666fa4b9834a45 [INFO] [stdout] at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.46/src/backtrace/libunwind.rs:86 [INFO] [stdout] 1: 0x55ca0c565244 - backtrace::backtrace::trace_unsynchronized::h01d3725fb5da8653 [INFO] [stdout] at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.46/src/backtrace/mod.rs:66 [INFO] [stdout] 2: 0x55ca0c565244 - std::sys_common::backtrace::_print_fmt::h5c7c4751bc296f90 [INFO] [stdout] at src/libstd/sys_common/backtrace.rs:78 [INFO] [stdout] 3: 0x55ca0c565244 - ::fmt::h7729313ad2d729c7 [INFO] [stdout] at src/libstd/sys_common/backtrace.rs:59 [INFO] [stdout] 4: 0x55ca0c58df6c - core::fmt::write::hb0049f6c12bdaffc [INFO] [stdout] at src/libcore/fmt/mod.rs:1069 [INFO] [stdout] 5: 0x55ca0c518ed5 - std::io::Write::write_fmt::h5d052af13df32ea6 [INFO] [stdout] at /rustc/41997647ba6a77908f6ef64401414feb00bccf16/src/libstd/io/mod.rs:1504 [INFO] [stdout] 6: 0x55ca0c55f861 - std::io::impls::>::write_fmt::h8fe8a9bdc421b4b6 [INFO] [stdout] at src/libstd/io/impls.rs:156 [INFO] [stdout] 7: 0x55ca0c567b15 - std::sys_common::backtrace::_print::ha087cac92e84a414 [INFO] [stdout] at src/libstd/sys_common/backtrace.rs:62 [INFO] [stdout] 8: 0x55ca0c567b15 - std::sys_common::backtrace::print::h6b013d3bfe6cbcb8 [INFO] [stdout] at src/libstd/sys_common/backtrace.rs:49 [INFO] [stdout] 9: 0x55ca0c567b15 - std::panicking::default_hook::{{closure}}::h016d7de02def2736 [INFO] [stdout] at src/libstd/panicking.rs:198 [INFO] [stdout] 10: 0x55ca0c5677fb - std::panicking::default_hook::h9386f7e484840463 [INFO] [stdout] at src/libstd/panicking.rs:215 [INFO] [stdout] 11: 0x55ca0c568172 - std::panicking::rust_panic_with_hook::h3846eb1b2e5a9312 [INFO] [stdout] at src/libstd/panicking.rs:511 [INFO] [stdout] 12: 0x55ca0c567d5b - rust_begin_unwind [INFO] [stdout] at src/libstd/panicking.rs:419 [INFO] [stdout] 13: 0x55ca0c58c991 - core::panicking::panic_fmt::hc5953a7331f9805c [INFO] [stdout] at src/libcore/panicking.rs:111 [INFO] [stdout] 14: 0x55ca0c58c7b3 - core::option::expect_none_failed::hf2c575a7b931ce1f [INFO] [stdout] at src/libcore/option.rs:1268 [INFO] [stdout] 15: 0x55ca0c51785b - core::result::Result::unwrap::h82b55542a9e38b3a [INFO] [stdout] at /rustc/41997647ba6a77908f6ef64401414feb00bccf16/src/libcore/result.rs:1005 [INFO] [stdout] 16: 0x55ca0c50ab7b - variable_size_byte_writer::tests::test_drop::h8e92f5d8c276ee37 [INFO] [stdout] at src/lib.rs:562 [INFO] [stdout] 17: 0x55ca0c50ab1a - variable_size_byte_writer::tests::test_drop::{{closure}}::ha2d72aba291cfff5 [INFO] [stdout] at src/lib.rs:559 [INFO] [stdout] 18: 0x55ca0c51007e - core::ops::function::FnOnce::call_once::h891130745ef3a7e9 [INFO] [stdout] at /rustc/41997647ba6a77908f6ef64401414feb00bccf16/src/libcore/ops/function.rs:232 [INFO] [stdout] 19: 0x55ca0c524dcf - as core::ops::function::FnOnce>::call_once::h1f6ee40732e80908 [INFO] [stdout] at /rustc/41997647ba6a77908f6ef64401414feb00bccf16/src/liballoc/boxed.rs:1008 [INFO] [stdout] 20: 0x55ca0c5403ce - as core::ops::function::FnOnce<()>>::call_once::h85dff111be9c2dc6 [INFO] [stdout] at /rustc/41997647ba6a77908f6ef64401414feb00bccf16/src/libstd/panic.rs:318 [INFO] [stdout] 21: 0x55ca0c5403ce - std::panicking::try::do_call::hee6f5a4bef67c840 [INFO] [stdout] at /rustc/41997647ba6a77908f6ef64401414feb00bccf16/src/libstd/panicking.rs:331 [INFO] [stdout] 22: 0x55ca0c5403ce - std::panicking::try::h3384d3b948e84dbc [INFO] [stdout] at /rustc/41997647ba6a77908f6ef64401414feb00bccf16/src/libstd/panicking.rs:274 [INFO] [stdout] 23: 0x55ca0c5403ce - std::panic::catch_unwind::h5ae91218e578066d [INFO] [stdout] at /rustc/41997647ba6a77908f6ef64401414feb00bccf16/src/libstd/panic.rs:394 [INFO] [stdout] 24: 0x55ca0c5403ce - test::run_test_in_process::he37a49587889b910 [INFO] [stdout] at src/libtest/lib.rs:541 [INFO] [stdout] 25: 0x55ca0c5403ce - test::run_test::run_test_inner::{{closure}}::h4f0d25136ca480c2 [INFO] [stdout] at src/libtest/lib.rs:450 [INFO] [stdout] 26: 0x55ca0c518386 - std::sys_common::backtrace::__rust_begin_short_backtrace::h969eceda34247af3 [INFO] [stdout] at /rustc/41997647ba6a77908f6ef64401414feb00bccf16/src/libstd/sys_common/backtrace.rs:130 [INFO] [stdout] 27: 0x55ca0c51d715 - std::thread::Builder::spawn_unchecked::{{closure}}::{{closure}}::h912007997cb04e92 [INFO] [stdout] at /rustc/41997647ba6a77908f6ef64401414feb00bccf16/src/libstd/thread/mod.rs:475 [INFO] [stdout] 28: 0x55ca0c51d715 - as core::ops::function::FnOnce<()>>::call_once::h8795d8b7bd223988 [INFO] [stdout] at /rustc/41997647ba6a77908f6ef64401414feb00bccf16/src/libstd/panic.rs:318 [INFO] [stdout] 29: 0x55ca0c51d715 - std::panicking::try::do_call::hb29b86f86d4d722e [INFO] [stdout] at /rustc/41997647ba6a77908f6ef64401414feb00bccf16/src/libstd/panicking.rs:331 [INFO] [stdout] 30: 0x55ca0c51d715 - std::panicking::try::h4bfefb3eddc0d900 [INFO] [stdout] at /rustc/41997647ba6a77908f6ef64401414feb00bccf16/src/libstd/panicking.rs:274 [INFO] [stdout] 31: 0x55ca0c51d715 - std::panic::catch_unwind::h774c24d4b38d5828 [INFO] [stdout] at /rustc/41997647ba6a77908f6ef64401414feb00bccf16/src/libstd/panic.rs:394 [INFO] [stdout] 32: 0x55ca0c51d715 - std::thread::Builder::spawn_unchecked::{{closure}}::ha50a32fa99413dde [INFO] [stdout] at /rustc/41997647ba6a77908f6ef64401414feb00bccf16/src/libstd/thread/mod.rs:474 [INFO] [stdout] 33: 0x55ca0c51d715 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h9dacb8f28d699f86 [INFO] [stdout] at /rustc/41997647ba6a77908f6ef64401414feb00bccf16/src/libcore/ops/function.rs:232 [INFO] [stdout] 34: 0x55ca0c55ba6f - as core::ops::function::FnOnce>::call_once::h7deaeeba480c6ce2 [INFO] [stdout] at /rustc/41997647ba6a77908f6ef64401414feb00bccf16/src/liballoc/boxed.rs:1008 [INFO] [stdout] 35: 0x55ca0c56ea63 - as core::ops::function::FnOnce>::call_once::h968b1dfb87756523 [INFO] [stdout] at /rustc/41997647ba6a77908f6ef64401414feb00bccf16/src/liballoc/boxed.rs:1008 [INFO] [stdout] 36: 0x55ca0c56ea63 - std::sys::unix::thread::Thread::new::thread_start::h2399addeb6370595 [INFO] [stdout] at src/libstd/sys/unix/thread.rs:87 [INFO] [stdout] 37: 0x7f8c48a6b6db - start_thread [INFO] [stdout] 38: 0x7f8c4857c88f - __clone [INFO] [stdout] 39: 0x0 - [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] failures: [INFO] [stdout] tests::test_drop [INFO] [stdout] [INFO] [stdout] test result: FAILED. 16 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out [INFO] [stdout] [INFO] [stderr] error: test failed, to rerun pass '--lib' [INFO] running `"docker" "inspect" "df05d79d3109a47487651a84e8042845618732448f4cfaaddca2bcb02805e6f7"` [INFO] running `"docker" "rm" "-f" "df05d79d3109a47487651a84e8042845618732448f4cfaaddca2bcb02805e6f7"` [INFO] [stdout] df05d79d3109a47487651a84e8042845618732448f4cfaaddca2bcb02805e6f7