[INFO] updating cached repository ELD/birdsong [INFO] running `"git" "fetch" "--all"` [INFO] [stdout] Fetching origin [INFO] [stderr] From git://github.com/ELD/birdsong [INFO] [stderr] * branch HEAD -> FETCH_HEAD [INFO] running `"git" "clone" "work/cache/sources/gh/ELD/birdsong" "work/ex/beta-1.37-6/sources/1.36.0/gh/ELD/birdsong"` [INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/ELD/birdsong'... [INFO] [stderr] done. [INFO] running `"git" "clone" "work/cache/sources/gh/ELD/birdsong" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/ELD/birdsong"` [INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/ELD/birdsong'... [INFO] [stderr] done. [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] b6445df046f60a65218de8ee4a5a93b0d58fa0b8 [INFO] sha for GitHub repo ELD/birdsong: b6445df046f60a65218de8ee4a5a93b0d58fa0b8 [INFO] validating manifest of ELD/birdsong 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 ELD/birdsong 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 ELD/birdsong [INFO] finished frobbing ELD/birdsong [INFO] frobbed toml for ELD/birdsong written to work/ex/beta-1.37-6/sources/1.36.0/gh/ELD/birdsong/Cargo.toml [INFO] started frobbing ELD/birdsong [INFO] finished frobbing ELD/birdsong [INFO] frobbed toml for ELD/birdsong written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/ELD/birdsong/Cargo.toml [INFO] crate ELD/birdsong already has a lockfile, it will not be regenerated [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 ELD/birdsong 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-6/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/ELD/birdsong:/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] 60a25aff3d711699c5ccb74d712c5e70f1b9fc2dae6218c9575e83c3169e1d3d [INFO] running `"docker" "start" "-a" "60a25aff3d711699c5ccb74d712c5e70f1b9fc2dae6218c9575e83c3169e1d3d"` [INFO] [stderr] Compiling birdsong v0.1.0 (/opt/crater/workdir) [INFO] [stderr] warning: use of deprecated item 'core::str::::trim_right': superseded by `trim_end` [INFO] [stderr] --> src/main.rs:24:114 [INFO] [stderr] | [INFO] [stderr] 24 | let tweet = format!("{tweet} {counter}", tweet = source_chars[0..break_index].iter().collect::().trim_right(), counter = format!("({}/2)", iteration)); [INFO] [stderr] | ^^^^^^^^^^ help: replace the use of the deprecated item: `trim_end` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(deprecated)] on by default [INFO] [stderr] [INFO] [stderr] warning: function is never used: `break_up_tweet` [INFO] [stderr] --> src/main.rs:11:1 [INFO] [stderr] | [INFO] [stderr] 11 | fn break_up_tweet(source_text: String) -> Vec { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(dead_code)] on by default [INFO] [stderr] [INFO] [stderr] warning: function is never used: `estimate_num_tweets` [INFO] [stderr] --> src/main.rs:34:1 [INFO] [stderr] | [INFO] [stderr] 34 | fn estimate_num_tweets(tweet: &str) -> u32 { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.79s [INFO] running `"docker" "inspect" "60a25aff3d711699c5ccb74d712c5e70f1b9fc2dae6218c9575e83c3169e1d3d"` [INFO] running `"docker" "rm" "-f" "60a25aff3d711699c5ccb74d712c5e70f1b9fc2dae6218c9575e83c3169e1d3d"` [INFO] [stdout] 60a25aff3d711699c5ccb74d712c5e70f1b9fc2dae6218c9575e83c3169e1d3d [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-6/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/ELD/birdsong:/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] 73d237fbaa2a3571c084349c64090567540b15ac6742ea0a44184d8988f73c27 [INFO] running `"docker" "start" "-a" "73d237fbaa2a3571c084349c64090567540b15ac6742ea0a44184d8988f73c27"` [INFO] [stderr] Compiling birdsong v0.1.0 (/opt/crater/workdir) [INFO] [stderr] warning: use of deprecated item 'core::str::::trim_right': superseded by `trim_end` [INFO] [stderr] --> src/main.rs:24:114 [INFO] [stderr] | [INFO] [stderr] 24 | let tweet = format!("{tweet} {counter}", tweet = source_chars[0..break_index].iter().collect::().trim_right(), counter = format!("({}/2)", iteration)); [INFO] [stderr] | ^^^^^^^^^^ help: replace the use of the deprecated item: `trim_end` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(deprecated)] on by default [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 1.11s [INFO] running `"docker" "inspect" "73d237fbaa2a3571c084349c64090567540b15ac6742ea0a44184d8988f73c27"` [INFO] running `"docker" "rm" "-f" "73d237fbaa2a3571c084349c64090567540b15ac6742ea0a44184d8988f73c27"` [INFO] [stdout] 73d237fbaa2a3571c084349c64090567540b15ac6742ea0a44184d8988f73c27 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-6/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/ELD/birdsong:/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] bd60fe1e0839fd7c0e2978fedf68d2da15fe0c70b0e075d31018d9e8827fa62d [INFO] running `"docker" "start" "-a" "bd60fe1e0839fd7c0e2978fedf68d2da15fe0c70b0e075d31018d9e8827fa62d"` [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.03s [INFO] [stderr] Running /opt/crater/target/debug/deps/birdsong-9fbb92c26c1d3c81 [INFO] [stdout] [INFO] [stdout] running 3 tests [INFO] [stdout] test test::it_breaks_up_a_tweet_into_140_character_strings ... ok [INFO] [stdout] test test::it_estimates_number_of_tweets ... ok [INFO] [stdout] test test::it_dyanmically_figures_out_the_number_of_tweets_to_send ... FAILED [INFO] [stdout] [INFO] [stdout] failures: [INFO] [stdout] [INFO] [stdout] ---- test::it_dyanmically_figures_out_the_number_of_tweets_to_send stdout ---- [INFO] [stdout] thread 'test::it_dyanmically_figures_out_the_number_of_tweets_to_send' panicked at 'attempt to subtract with overflow', src/main.rs:20:29 [INFO] [stdout] stack backtrace: [INFO] [stdout] 0: 0x5640c3c075a3 - 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: 0x5640c3c02edb - std::sys_common::backtrace::_print::h49a82ae9552e35c7 [INFO] [stdout] at src/libstd/sys_common/backtrace.rs:71 [INFO] [stdout] 2: 0x5640c3c062e6 - 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: 0x5640c3c0600e - std::panicking::default_hook::he4af6af4ac7fef7b [INFO] [stdout] at src/libstd/panicking.rs:208 [INFO] [stdout] 4: 0x5640c3c069ef - std::panicking::rust_panic_with_hook::h057ff03eb4c8000f [INFO] [stdout] at src/libstd/panicking.rs:474 [INFO] [stdout] 5: 0x5640c3c06571 - std::panicking::continue_panic_fmt::ha6d6ae144369025b [INFO] [stdout] at src/libstd/panicking.rs:381 [INFO] [stdout] 6: 0x5640c3c06455 - rust_begin_unwind [INFO] [stdout] at src/libstd/panicking.rs:308 [INFO] [stdout] 7: 0x5640c3c1871c - core::panicking::panic_fmt::hc4f83bfed80aeabd [INFO] [stdout] at src/libcore/panicking.rs:85 [INFO] [stdout] 8: 0x5640c3c1865b - core::panicking::panic::h62fdcfa056e70982 [INFO] [stdout] at src/libcore/panicking.rs:49 [INFO] [stdout] 9: 0x5640c3bb37aa - birdsong::break_up_tweet::h64f9e1e0f030ebc6 [INFO] [stdout] at src/main.rs:20 [INFO] [stdout] 10: 0x5640c3bbc3df - birdsong::test::it_dyanmically_figures_out_the_number_of_tweets_to_send::h861547bd899715ba [INFO] [stdout] at src/main.rs:93 [INFO] [stdout] 11: 0x5640c3bbc2c9 - birdsong::test::it_dyanmically_figures_out_the_number_of_tweets_to_send::{{closure}}::he5d22f34714b5a68 [INFO] [stdout] at src/main.rs:74 [INFO] [stdout] 12: 0x5640c3bb3e0d - core::ops::function::FnOnce::call_once::hcb2fb07ee967506e [INFO] [stdout] at /rustc/a53f9df32fbb0b5f4382caaad8f1a46f36ea887c/src/libcore/ops/function.rs:231 [INFO] [stdout] 13: 0x5640c3bc76de - as core::ops::function::FnOnce>::call_once::h6b004fa8f4fc1608 [INFO] [stdout] at /rustc/a53f9df32fbb0b5f4382caaad8f1a46f36ea887c/src/liballoc/boxed.rs:704 [INFO] [stdout] 14: 0x5640c3c09709 - __rust_maybe_catch_panic [INFO] [stdout] at src/libpanic_unwind/lib.rs:85 [INFO] [stdout] 15: 0x5640c3be1fd7 - 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: 0x5640c3bbc9f4 - std::sys_common::backtrace::__rust_begin_short_backtrace::h3765d76361a33ff7 [INFO] [stdout] at /rustc/a53f9df32fbb0b5f4382caaad8f1a46f36ea887c/src/libstd/sys_common/backtrace.rs:136 [INFO] [stdout] 17: 0x5640c3bc0aa4 - 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: 0x5640c3c09709 - __rust_maybe_catch_panic [INFO] [stdout] at src/libpanic_unwind/lib.rs:85 [INFO] [stdout] 19: 0x5640c3bc10b1 - 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: 0x5640c3bfacbe - as core::ops::function::FnOnce>::call_once::h805c3cc89d534c05 [INFO] [stdout] at /rustc/a53f9df32fbb0b5f4382caaad8f1a46f36ea887c/src/liballoc/boxed.rs:704 [INFO] [stdout] 21: 0x5640c3c08def - 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: 0x7fdf5bed44a3 - start_thread [INFO] [stdout] 23: 0x7fdf5b9ffd0e - __clone [INFO] [stdout] 24: 0x0 - [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] failures: [INFO] [stdout] test::it_dyanmically_figures_out_the_number_of_tweets_to_send [INFO] [stdout] [INFO] [stdout] test result: FAILED. 2 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out [INFO] [stdout] [INFO] [stderr] error: test failed, to rerun pass '--bin birdsong' [INFO] running `"docker" "inspect" "bd60fe1e0839fd7c0e2978fedf68d2da15fe0c70b0e075d31018d9e8827fa62d"` [INFO] running `"docker" "rm" "-f" "bd60fe1e0839fd7c0e2978fedf68d2da15fe0c70b0e075d31018d9e8827fa62d"` [INFO] [stdout] bd60fe1e0839fd7c0e2978fedf68d2da15fe0c70b0e075d31018d9e8827fa62d