[INFO] crate toolkit 0.1.1 is already in cache [INFO] extracting crate toolkit 0.1.1 into work/ex/beta-1.38-1/sources/1.37.0/reg/toolkit/0.1.1 [INFO] extracting crate toolkit 0.1.1 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/toolkit/0.1.1 [INFO] validating manifest of toolkit-0.1.1 on toolchain 1.37.0 [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] validating manifest of toolkit-0.1.1 on toolchain beta-2019-08-13 [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started frobbing toolkit-0.1.1 [INFO] finished frobbing toolkit-0.1.1 [INFO] frobbed toml for toolkit-0.1.1 written to work/ex/beta-1.38-1/sources/1.37.0/reg/toolkit/0.1.1/Cargo.toml [INFO] started frobbing toolkit-0.1.1 [INFO] finished frobbing toolkit-0.1.1 [INFO] frobbed toml for toolkit-0.1.1 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/toolkit/0.1.1/Cargo.toml [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"` [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"` [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] testing toolkit-0.1.1 against beta-2019-08-13 for beta-1.38-1 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/toolkit/0.1.1:/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" "+beta-2019-08-13" "build" "--frozen"` [INFO] [stdout] dc94a09923c3f299ea98c089204fa4d18de2f22db7f3aebf8511bb34fb35cfbd [INFO] running `"docker" "start" "-a" "dc94a09923c3f299ea98c089204fa4d18de2f22db7f3aebf8511bb34fb35cfbd"` [INFO] [stderr] Compiling toolkit v0.1.1 (/opt/crater/workdir) [INFO] [stderr] warning: unused import: `std::str::FromStr` [INFO] [stderr] --> src/number.rs:3:5 [INFO] [stderr] | [INFO] [stderr] 3 | use std::str::FromStr; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused imports: `fs`, `io` [INFO] [stderr] --> src/path.rs:1:16 [INFO] [stderr] | [INFO] [stderr] 1 | use std::{env, fs, io}; [INFO] [stderr] | ^^ ^^ [INFO] [stderr] [INFO] [stderr] warning: variable `has_negative` is assigned to, but never used [INFO] [stderr] --> src/number.rs:18:11 [INFO] [stderr] | [INFO] [stderr] 18 | let mut has_negative = false; [INFO] [stderr] | ^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] = note: consider using `_has_negative` instead [INFO] [stderr] [INFO] [stderr] warning: value assigned to `has_negative` is never read [INFO] [stderr] --> src/number.rs:28:7 [INFO] [stderr] | [INFO] [stderr] 28 | has_negative = true; [INFO] [stderr] | ^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_assignments)]` on by default [INFO] [stderr] = help: maybe it is overwritten before being read? [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.30s [INFO] running `"docker" "inspect" "dc94a09923c3f299ea98c089204fa4d18de2f22db7f3aebf8511bb34fb35cfbd"` [INFO] running `"docker" "rm" "-f" "dc94a09923c3f299ea98c089204fa4d18de2f22db7f3aebf8511bb34fb35cfbd"` [INFO] [stdout] dc94a09923c3f299ea98c089204fa4d18de2f22db7f3aebf8511bb34fb35cfbd [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/toolkit/0.1.1:/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" "+beta-2019-08-13" "test" "--frozen" "--no-run"` [INFO] [stdout] 7f9051ad757ac488e3398b252aa7e2605ead4e98b9da0ae91c4d14ec26dab4e4 [INFO] running `"docker" "start" "-a" "7f9051ad757ac488e3398b252aa7e2605ead4e98b9da0ae91c4d14ec26dab4e4"` [INFO] [stderr] Compiling toolkit v0.1.1 (/opt/crater/workdir) [INFO] [stderr] warning: unused import: `std::str::FromStr` [INFO] [stderr] --> src/number.rs:3:5 [INFO] [stderr] | [INFO] [stderr] 3 | use std::str::FromStr; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused imports: `fs`, `io` [INFO] [stderr] --> src/path.rs:1:16 [INFO] [stderr] | [INFO] [stderr] 1 | use std::{env, fs, io}; [INFO] [stderr] | ^^ ^^ [INFO] [stderr] [INFO] [stderr] warning: variable `has_negative` is assigned to, but never used [INFO] [stderr] --> src/number.rs:18:11 [INFO] [stderr] | [INFO] [stderr] 18 | let mut has_negative = false; [INFO] [stderr] | ^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] = note: consider using `_has_negative` instead [INFO] [stderr] [INFO] [stderr] warning: value assigned to `has_negative` is never read [INFO] [stderr] --> src/number.rs:28:7 [INFO] [stderr] | [INFO] [stderr] 28 | has_negative = true; [INFO] [stderr] | ^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_assignments)]` on by default [INFO] [stderr] = help: maybe it is overwritten before being read? [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 1.62s [INFO] running `"docker" "inspect" "7f9051ad757ac488e3398b252aa7e2605ead4e98b9da0ae91c4d14ec26dab4e4"` [INFO] running `"docker" "rm" "-f" "7f9051ad757ac488e3398b252aa7e2605ead4e98b9da0ae91c4d14ec26dab4e4"` [INFO] [stdout] 7f9051ad757ac488e3398b252aa7e2605ead4e98b9da0ae91c4d14ec26dab4e4 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/toolkit/0.1.1:/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" "+beta-2019-08-13" "test" "--frozen"` [INFO] [stdout] 8024923df880773f6448dbcd130ec95c6b6f5eb4ac4eaa3be9121ca1f839704a [INFO] running `"docker" "start" "-a" "8024923df880773f6448dbcd130ec95c6b6f5eb4ac4eaa3be9121ca1f839704a"` [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.01s [INFO] [stderr] Running /opt/crater/target/debug/deps/toolkit-c5dbcdead5b66d07 [INFO] [stderr] Running /opt/crater/target/debug/deps/test_fs-f605ca0d1dd584f5 [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] [stdout] running 1 test [INFO] [stdout] test test_append ... FAILED [INFO] [stderr] error: test failed, to rerun pass '--test test_fs' [INFO] [stdout] [INFO] [stdout] failures: [INFO] [stdout] [INFO] [stdout] ---- test_append stdout ---- [INFO] [stdout] "/opt/crater/workdir/_tmp.txt" [INFO] [stdout] thread 'test_append' panicked at 'assertion failed: toolkit::fs::append(&file, "A").is_ok()', tests/test_fs.rs:7:3 [INFO] [stdout] stack backtrace: [INFO] [stdout] 0: 0x56161ae7660b - backtrace::backtrace::libunwind::trace::h23ae608c8b906c69 [INFO] [stdout] at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.34/src/backtrace/libunwind.rs:88 [INFO] [stdout] 1: 0x56161ae7660b - backtrace::backtrace::trace_unsynchronized::h65b3ea295a85fd48 [INFO] [stdout] at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.34/src/backtrace/mod.rs:66 [INFO] [stdout] 2: 0x56161ae7660b - std::sys_common::backtrace::_print::h24f527b44b6cfc06 [INFO] [stdout] at src/libstd/sys_common/backtrace.rs:47 [INFO] [stdout] 3: 0x56161ae7660b - std::sys_common::backtrace::print::h712608e4347fd64a [INFO] [stdout] at src/libstd/sys_common/backtrace.rs:36 [INFO] [stdout] 4: 0x56161ae7660b - std::panicking::default_hook::{{closure}}::h6c3d570c2b500048 [INFO] [stdout] at src/libstd/panicking.rs:200 [INFO] [stdout] 5: 0x56161ae7627c - std::panicking::default_hook::hb29963fb4747e0dd [INFO] [stdout] at src/libstd/panicking.rs:211 [INFO] [stdout] 6: 0x56161ae76d7d - std::panicking::rust_panic_with_hook::hd1236c3083de823a [INFO] [stdout] at src/libstd/panicking.rs:477 [INFO] [stdout] 7: 0x56161ae276d1 - std::panicking::begin_panic::hbecfeb15855b8af7 [INFO] [stdout] at /rustc/e450539c2a8d7f791268d699cbe45ab3e57d43a1/src/libstd/panicking.rs:411 [INFO] [stdout] 8: 0x56161ae2d461 - test_fs::test_append::h0f528f82b92f334f [INFO] [stdout] at tests/test_fs.rs:7 [INFO] [stdout] 9: 0x56161ae2d29a - test_fs::test_append::{{closure}}::h676c90aaeb031ef5 [INFO] [stdout] at tests/test_fs.rs:4 [INFO] [stdout] 10: 0x56161ae2b9de - core::ops::function::FnOnce::call_once::h585d07c4bce1e67a [INFO] [stdout] at /rustc/e450539c2a8d7f791268d699cbe45ab3e57d43a1/src/libcore/ops/function.rs:235 [INFO] [stdout] 11: 0x56161ae3922f - as core::ops::function::FnOnce>::call_once::h355e655b04400826 [INFO] [stdout] at /rustc/e450539c2a8d7f791268d699cbe45ab3e57d43a1/src/liballoc/boxed.rs:787 [INFO] [stdout] 12: 0x56161ae7985a - __rust_maybe_catch_panic [INFO] [stdout] at src/libpanic_unwind/lib.rs:80 [INFO] [stdout] 13: 0x56161ae5381e - std::panicking::try::h5890cbed5d1d8df0 [INFO] [stdout] at /rustc/e450539c2a8d7f791268d699cbe45ab3e57d43a1/src/libstd/panicking.rs:275 [INFO] [stdout] 14: 0x56161ae5381e - std::panic::catch_unwind::hf93cc71fc6442fdf [INFO] [stdout] at /rustc/e450539c2a8d7f791268d699cbe45ab3e57d43a1/src/libstd/panic.rs:394 [INFO] [stdout] 15: 0x56161ae5381e - test::run_test::run_test_inner::{{closure}}::ha399a28a3066698d [INFO] [stdout] at src/libtest/lib.rs:1408 [INFO] [stdout] 16: 0x56161ae2ec55 - std::sys_common::backtrace::__rust_begin_short_backtrace::h089859c639046955 [INFO] [stdout] at /rustc/e450539c2a8d7f791268d699cbe45ab3e57d43a1/src/libstd/sys_common/backtrace.rs:77 [INFO] [stdout] 17: 0x56161ae32e65 - std::thread::Builder::spawn_unchecked::{{closure}}::{{closure}}::h8d489100862c3e01 [INFO] [stdout] at /rustc/e450539c2a8d7f791268d699cbe45ab3e57d43a1/src/libstd/thread/mod.rs:470 [INFO] [stdout] 18: 0x56161ae32e65 - as core::ops::function::FnOnce<()>>::call_once::h5746c9e2571824d0 [INFO] [stdout] at /rustc/e450539c2a8d7f791268d699cbe45ab3e57d43a1/src/libstd/panic.rs:315 [INFO] [stdout] 19: 0x56161ae32e65 - std::panicking::try::do_call::hfd443b32b22f72a6 [INFO] [stdout] at /rustc/e450539c2a8d7f791268d699cbe45ab3e57d43a1/src/libstd/panicking.rs:296 [INFO] [stdout] 20: 0x56161ae7985a - __rust_maybe_catch_panic [INFO] [stdout] at src/libpanic_unwind/lib.rs:80 [INFO] [stdout] 21: 0x56161ae33462 - std::panicking::try::h332f368ed7d9b7d1 [INFO] [stdout] at /rustc/e450539c2a8d7f791268d699cbe45ab3e57d43a1/src/libstd/panicking.rs:275 [INFO] [stdout] 22: 0x56161ae33462 - std::panic::catch_unwind::h316b7be8b4198222 [INFO] [stdout] at /rustc/e450539c2a8d7f791268d699cbe45ab3e57d43a1/src/libstd/panic.rs:394 [INFO] [stdout] 23: 0x56161ae33462 - std::thread::Builder::spawn_unchecked::{{closure}}::h916aed08bc6e5276 [INFO] [stdout] at /rustc/e450539c2a8d7f791268d699cbe45ab3e57d43a1/src/libstd/thread/mod.rs:469 [INFO] [stdout] 24: 0x56161ae33462 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h9091646be5c55ea6 [INFO] [stdout] at /rustc/e450539c2a8d7f791268d699cbe45ab3e57d43a1/src/libcore/ops/function.rs:235 [INFO] [stdout] 25: 0x56161ae6c20f - as core::ops::function::FnOnce>::call_once::hb5396a93648ae250 [INFO] [stdout] at /rustc/e450539c2a8d7f791268d699cbe45ab3e57d43a1/src/liballoc/boxed.rs:787 [INFO] [stdout] 26: 0x56161ae78f90 - as core::ops::function::FnOnce>::call_once::h92593001847bb63e [INFO] [stdout] at /rustc/e450539c2a8d7f791268d699cbe45ab3e57d43a1/src/liballoc/boxed.rs:787 [INFO] [stdout] 27: 0x56161ae78f90 - std::sys_common::thread::start_thread::h569f3ccc0d5dcd83 [INFO] [stdout] at src/libstd/sys_common/thread.rs:13 [INFO] [stdout] 28: 0x56161ae78f90 - std::sys::unix::thread::Thread::new::thread_start::hd9ff46fad032d886 [INFO] [stdout] at src/libstd/sys/unix/thread.rs:79 [INFO] [stdout] 29: 0x7fa68c53b4a4 - start_thread [INFO] [stdout] 30: 0x7fa68c066d0f - __clone [INFO] [stdout] 31: 0x0 - [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] failures: [INFO] [stdout] test_append [INFO] [stdout] [INFO] [stdout] test result: FAILED. 0 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out [INFO] [stdout] [INFO] running `"docker" "inspect" "8024923df880773f6448dbcd130ec95c6b6f5eb4ac4eaa3be9121ca1f839704a"` [INFO] running `"docker" "rm" "-f" "8024923df880773f6448dbcd130ec95c6b6f5eb4ac4eaa3be9121ca1f839704a"` [INFO] [stdout] 8024923df880773f6448dbcd130ec95c6b6f5eb4ac4eaa3be9121ca1f839704a