[INFO] crate variable_size_byte_writer 0.1.5 is already in cache [INFO] extracting crate variable_size_byte_writer 0.1.5 into work/ex/beta-1.37-6/sources/1.36.0/reg/variable_size_byte_writer/0.1.5 [INFO] extracting crate variable_size_byte_writer 0.1.5 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/variable_size_byte_writer/0.1.5 [INFO] validating manifest of variable_size_byte_writer-0.1.5 on toolchain 1.36.0 [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] validating manifest of variable_size_byte_writer-0.1.5 on toolchain beta-2019-07-23 [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started frobbing variable_size_byte_writer-0.1.5 [INFO] finished frobbing variable_size_byte_writer-0.1.5 [INFO] frobbed toml for variable_size_byte_writer-0.1.5 written to work/ex/beta-1.37-6/sources/1.36.0/reg/variable_size_byte_writer/0.1.5/Cargo.toml [INFO] started frobbing variable_size_byte_writer-0.1.5 [INFO] finished frobbing variable_size_byte_writer-0.1.5 [INFO] frobbed toml for variable_size_byte_writer-0.1.5 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/variable_size_byte_writer/0.1.5/Cargo.toml [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"` [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"` [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] testing variable_size_byte_writer-0.1.5 against 1.36.0 for beta-1.37-6 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-7/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/variable_size_byte_writer/0.1.5:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.36.0" "build" "--frozen"` [INFO] [stdout] 5fdec50b9f722fc177d0fc0f6c21fe233303e411f718f862b77a4ee648bfc1ea [INFO] running `"docker" "start" "-a" "5fdec50b9f722fc177d0fc0f6c21fe233303e411f718f862b77a4ee648bfc1ea"` [INFO] [stderr] Compiling typenum_loops v0.2.0 [INFO] [stderr] Compiling variable_size_byte_writer v0.1.5 (/opt/crater/workdir) [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.54s [INFO] running `"docker" "inspect" "5fdec50b9f722fc177d0fc0f6c21fe233303e411f718f862b77a4ee648bfc1ea"` [INFO] running `"docker" "rm" "-f" "5fdec50b9f722fc177d0fc0f6c21fe233303e411f718f862b77a4ee648bfc1ea"` [INFO] [stdout] 5fdec50b9f722fc177d0fc0f6c21fe233303e411f718f862b77a4ee648bfc1ea [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-7/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/variable_size_byte_writer/0.1.5:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.36.0" "test" "--frozen" "--no-run"` [INFO] [stdout] 929daf06a383801188edc2b5ef9dcc2cedf34033bf568202449ed5c61bc1fc2e [INFO] running `"docker" "start" "-a" "929daf06a383801188edc2b5ef9dcc2cedf34033bf568202449ed5c61bc1fc2e"` [INFO] [stderr] Compiling variable_size_byte_writer v0.1.5 (/opt/crater/workdir) [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.97s [INFO] running `"docker" "inspect" "929daf06a383801188edc2b5ef9dcc2cedf34033bf568202449ed5c61bc1fc2e"` [INFO] running `"docker" "rm" "-f" "929daf06a383801188edc2b5ef9dcc2cedf34033bf568202449ed5c61bc1fc2e"` [INFO] [stdout] 929daf06a383801188edc2b5ef9dcc2cedf34033bf568202449ed5c61bc1fc2e [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-7/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/variable_size_byte_writer/0.1.5:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.36.0" "test" "--frozen"` [INFO] [stdout] efa14f249ac8804632358c960f5e4a9a885d82257cb34f3b3aea21c9ddfaefc3 [INFO] running `"docker" "start" "-a" "efa14f249ac8804632358c960f5e4a9a885d82257cb34f3b3aea21c9ddfaefc3"` [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.01s [INFO] [stderr] Running /opt/crater/target/debug/deps/variable_size_byte_writer-9f2f80ff40b3bec5 [INFO] [stdout] [INFO] [stdout] running 17 tests [INFO] [stdout] test tests::test_all_bytes ... ok [INFO] [stdout] test tests::test_can_insert ... ok [INFO] [stdout] test tests::test_move_range_to_start ... ok [INFO] [stdout] test tests::test_erase_all_bytes ... ok [INFO] [stdout] test tests::test_erase_complete_bytes ... ok [INFO] [stdout] test tests::test_insert ... ok [INFO] [stdout] test tests::test_flush ... ok [INFO] [stdout] test tests::test_flush_complete_bytes ... ok [INFO] [stdout] test tests::test_complete_bytes ... ok [INFO] [stdout] test tests::test_with_capacity ... ok [INFO] [stdout] test tests::test_write_range ... ok [INFO] [stdout] test tests::test_write ... ok [INFO] [stdout] test tests::test_padding ... ok [INFO] [stdout] test tests::test_partial_byte ... ok [INFO] [stdout] test tests::test_partial_bits ... ok [INFO] [stdout] test tests::test_new ... 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/libcore/result.rs:999:5 [INFO] [stdout] stack backtrace: [INFO] [stdout] 0: 0x55803fcf0a13 - std::sys::unix::backtrace::tracing::imp::unwind_backtrace::h6485381528590a55 [INFO] [stdout] at src/libstd/sys/unix/backtrace/tracing/gcc_s.rs:39 [INFO] [stdout] 1: 0x55803fcec34b - std::sys_common::backtrace::_print::h49a82ae9552e35c7 [INFO] [stdout] at src/libstd/sys_common/backtrace.rs:71 [INFO] [stdout] 2: 0x55803fcef756 - std::panicking::default_hook::{{closure}}::he20974adbefcc046 [INFO] [stdout] at src/libstd/sys_common/backtrace.rs:59 [INFO] [stdout] at src/libstd/panicking.rs:197 [INFO] [stdout] 3: 0x55803fcef47e - std::panicking::default_hook::he4af6af4ac7fef7b [INFO] [stdout] at src/libstd/panicking.rs:208 [INFO] [stdout] 4: 0x55803fcefe5f - std::panicking::rust_panic_with_hook::h057ff03eb4c8000f [INFO] [stdout] at src/libstd/panicking.rs:474 [INFO] [stdout] 5: 0x55803fcef9e1 - std::panicking::continue_panic_fmt::ha6d6ae144369025b [INFO] [stdout] at src/libstd/panicking.rs:381 [INFO] [stdout] 6: 0x55803fcef8c5 - rust_begin_unwind [INFO] [stdout] at src/libstd/panicking.rs:308 [INFO] [stdout] 7: 0x55803fd01c5c - core::panicking::panic_fmt::hc4f83bfed80aeabd [INFO] [stdout] at src/libcore/panicking.rs:85 [INFO] [stdout] 8: 0x55803fca43ae - core::result::unwrap_failed::h274ad4080f644a0a [INFO] [stdout] at /rustc/a53f9df32fbb0b5f4382caaad8f1a46f36ea887c/src/libcore/macros.rs:18 [INFO] [stdout] 9: 0x55803fca49c6 - core::result::Result::unwrap::h6b53b06c1e410705 [INFO] [stdout] at /rustc/a53f9df32fbb0b5f4382caaad8f1a46f36ea887c/src/libcore/result.rs:800 [INFO] [stdout] 10: 0x55803fc98980 - variable_size_byte_writer::tests::test_drop::hd18eef466ba317a8 [INFO] [stdout] at src/lib.rs:562 [INFO] [stdout] 11: 0x55803fc98929 - variable_size_byte_writer::tests::test_drop::{{closure}}::habd3440e8703bf47 [INFO] [stdout] at src/lib.rs:559 [INFO] [stdout] 12: 0x55803fc9e00d - core::ops::function::FnOnce::call_once::ha23bdce2a430d139 [INFO] [stdout] at /rustc/a53f9df32fbb0b5f4382caaad8f1a46f36ea887c/src/libcore/ops/function.rs:231 [INFO] [stdout] 13: 0x55803fcb0b4e - as core::ops::function::FnOnce>::call_once::h6b004fa8f4fc1608 [INFO] [stdout] at /rustc/a53f9df32fbb0b5f4382caaad8f1a46f36ea887c/src/liballoc/boxed.rs:704 [INFO] [stdout] 14: 0x55803fcf2c49 - __rust_maybe_catch_panic [INFO] [stdout] at src/libpanic_unwind/lib.rs:85 [INFO] [stdout] 15: 0x55803fccb447 - test::run_test::run_test_inner::{{closure}}::h9a4d23c41d058d37 [INFO] [stdout] at /rustc/a53f9df32fbb0b5f4382caaad8f1a46f36ea887c/src/libstd/panicking.rs:272 [INFO] [stdout] at /rustc/a53f9df32fbb0b5f4382caaad8f1a46f36ea887c/src/libstd/panic.rs:394 [INFO] [stdout] at src/libtest/lib.rs:1468 [INFO] [stdout] 16: 0x55803fca5e64 - std::sys_common::backtrace::__rust_begin_short_backtrace::h3765d76361a33ff7 [INFO] [stdout] at /rustc/a53f9df32fbb0b5f4382caaad8f1a46f36ea887c/src/libstd/sys_common/backtrace.rs:136 [INFO] [stdout] 17: 0x55803fca9f14 - std::panicking::try::do_call::h6f86e980b52f74d5 [INFO] [stdout] at /rustc/a53f9df32fbb0b5f4382caaad8f1a46f36ea887c/src/libstd/thread/mod.rs:470 [INFO] [stdout] at /rustc/a53f9df32fbb0b5f4382caaad8f1a46f36ea887c/src/libstd/panic.rs:315 [INFO] [stdout] at /rustc/a53f9df32fbb0b5f4382caaad8f1a46f36ea887c/src/libstd/panicking.rs:293 [INFO] [stdout] 18: 0x55803fcf2c49 - __rust_maybe_catch_panic [INFO] [stdout] at src/libpanic_unwind/lib.rs:85 [INFO] [stdout] 19: 0x55803fcaa521 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h760b8a2b155f54c3 [INFO] [stdout] at /rustc/a53f9df32fbb0b5f4382caaad8f1a46f36ea887c/src/libstd/panicking.rs:272 [INFO] [stdout] at /rustc/a53f9df32fbb0b5f4382caaad8f1a46f36ea887c/src/libstd/panic.rs:394 [INFO] [stdout] at /rustc/a53f9df32fbb0b5f4382caaad8f1a46f36ea887c/src/libstd/thread/mod.rs:469 [INFO] [stdout] at /rustc/a53f9df32fbb0b5f4382caaad8f1a46f36ea887c/src/libcore/ops/function.rs:231 [INFO] [stdout] 20: 0x55803fce412e - as core::ops::function::FnOnce>::call_once::h805c3cc89d534c05 [INFO] [stdout] at /rustc/a53f9df32fbb0b5f4382caaad8f1a46f36ea887c/src/liballoc/boxed.rs:704 [INFO] [stdout] 21: 0x55803fcf232f - std::sys::unix::thread::Thread::new::thread_start::h6f10b78f26c98dc6 [INFO] [stdout] at /rustc/a53f9df32fbb0b5f4382caaad8f1a46f36ea887c/src/liballoc/boxed.rs:704 [INFO] [stdout] at src/libstd/sys_common/thread.rs:13 [INFO] [stdout] at src/libstd/sys/unix/thread.rs:79 [INFO] [stdout] 22: 0x7f890ce554a3 - start_thread [INFO] [stdout] 23: 0x7f890c980d0e - __clone [INFO] [stdout] 24: 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" "efa14f249ac8804632358c960f5e4a9a885d82257cb34f3b3aea21c9ddfaefc3"` [INFO] running `"docker" "rm" "-f" "efa14f249ac8804632358c960f5e4a9a885d82257cb34f3b3aea21c9ddfaefc3"` [INFO] [stdout] efa14f249ac8804632358c960f5e4a9a885d82257cb34f3b3aea21c9ddfaefc3