[INFO] fetching crate rust-string-random 0.1.0... [INFO] testing rust-string-random-0.1.0 against master#0e21a27075a8c508f00d1a4430497f17ce93d5c9 for pr-98839 [INFO] extracting crate rust-string-random 0.1.0 into /workspace/builds/worker-7/source [INFO] validating manifest of crates.io crate rust-string-random 0.1.0 on toolchain 0e21a27075a8c508f00d1a4430497f17ce93d5c9 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0e21a27075a8c508f00d1a4430497f17ce93d5c9" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking crates.io crate rust-string-random 0.1.0 [INFO] finished tweaking crates.io crate rust-string-random 0.1.0 [INFO] tweaked toml for crates.io crate rust-string-random 0.1.0 written to /workspace/builds/worker-7/source/Cargo.toml [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0e21a27075a8c508f00d1a4430497f17ce93d5c9" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }` [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0e21a27075a8c508f00d1a4430497f17ce93d5c9" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5873ed620acfc3295992aedd9294443d62a478a48ba243bc5e6c4f5abaffa05f" "/opt/rustwide/cargo-home/bin/cargo" "+0e21a27075a8c508f00d1a4430497f17ce93d5c9" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 3c5c5c6847226e8704a41a901bf969e4e3c254befc20cf067a867f76b3e8016b [INFO] running `Command { std: "docker" "start" "-a" "3c5c5c6847226e8704a41a901bf969e4e3c254befc20cf067a867f76b3e8016b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "3c5c5c6847226e8704a41a901bf969e4e3c254befc20cf067a867f76b3e8016b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "3c5c5c6847226e8704a41a901bf969e4e3c254befc20cf067a867f76b3e8016b", kill_on_drop: false }` [INFO] [stdout] 3c5c5c6847226e8704a41a901bf969e4e3c254befc20cf067a867f76b3e8016b [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "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" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5873ed620acfc3295992aedd9294443d62a478a48ba243bc5e6c4f5abaffa05f" "/opt/rustwide/cargo-home/bin/cargo" "+0e21a27075a8c508f00d1a4430497f17ce93d5c9" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 817e733516bb89b3a67620744fd5975d32b6fd68441072aec4e9ef7464127db1 [INFO] running `Command { std: "docker" "start" "-a" "817e733516bb89b3a67620744fd5975d32b6fd68441072aec4e9ef7464127db1", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.126 [INFO] [stderr] Compiling getrandom v0.1.16 [INFO] [stderr] Compiling cfg-if v1.0.0 [INFO] [stderr] Compiling ppv-lite86 v0.2.16 [INFO] [stderr] Compiling rand_core v0.5.1 [INFO] [stderr] Compiling rand_chacha v0.2.2 [INFO] [stderr] Compiling rand v0.7.3 [INFO] [stderr] Compiling rust-string-random v0.1.0 (/opt/rustwide/workdir) [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 3.59s [INFO] running `Command { std: "docker" "inspect" "817e733516bb89b3a67620744fd5975d32b6fd68441072aec4e9ef7464127db1", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "817e733516bb89b3a67620744fd5975d32b6fd68441072aec4e9ef7464127db1", kill_on_drop: false }` [INFO] [stdout] 817e733516bb89b3a67620744fd5975d32b6fd68441072aec4e9ef7464127db1 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "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" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5873ed620acfc3295992aedd9294443d62a478a48ba243bc5e6c4f5abaffa05f" "/opt/rustwide/cargo-home/bin/cargo" "+0e21a27075a8c508f00d1a4430497f17ce93d5c9" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 554fefea9ef15e162d7253e9cf4b8e61714e7e61b4799d0d15756d6a477b4d3b [INFO] running `Command { std: "docker" "start" "-a" "554fefea9ef15e162d7253e9cf4b8e61714e7e61b4799d0d15756d6a477b4d3b", kill_on_drop: false }` [INFO] [stderr] Compiling rust-string-random v0.1.0 (/opt/rustwide/workdir) [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.48s [INFO] running `Command { std: "docker" "inspect" "554fefea9ef15e162d7253e9cf4b8e61714e7e61b4799d0d15756d6a477b4d3b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "554fefea9ef15e162d7253e9cf4b8e61714e7e61b4799d0d15756d6a477b4d3b", kill_on_drop: false }` [INFO] [stdout] 554fefea9ef15e162d7253e9cf4b8e61714e7e61b4799d0d15756d6a477b4d3b [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "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" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5873ed620acfc3295992aedd9294443d62a478a48ba243bc5e6c4f5abaffa05f" "/opt/rustwide/cargo-home/bin/cargo" "+0e21a27075a8c508f00d1a4430497f17ce93d5c9" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] 9f002eba3b1cc50fcf119f672d8a8e8e5e6d990b0a3d4c1653c71fcb0ab3f730 [INFO] running `Command { std: "docker" "start" "-a" "9f002eba3b1cc50fcf119f672d8a8e8e5e6d990b0a3d4c1653c71fcb0ab3f730", kill_on_drop: false }` [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.03s [INFO] [stderr] Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/rust_string_random-dcf58e9ad2491ec4) [INFO] [stdout] [INFO] [stdout] running 1 test [INFO] [stdout] test tests::string_random ... ok [INFO] [stdout] [INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s [INFO] [stdout] [INFO] [stderr] Doc-tests rust-string-random [INFO] [stdout] [INFO] [stdout] running 1 test [INFO] [stdout] test src/lib.rs - random (line 14) ... FAILED [INFO] [stdout] [INFO] [stdout] failures: [INFO] [stdout] [INFO] [stdout] ---- src/lib.rs - random (line 14) stdout ---- [INFO] [stdout] Test executable failed (exit status: 101). [INFO] [stdout] [INFO] [stdout] stderr: [INFO] [stdout] thread 'main' panicked at 'attempt to subtract with overflow', src/lib.rs:52:27 [INFO] [stdout] stack backtrace: [INFO] [stdout] 0: 0x55f4b1a7f620 - std::backtrace_rs::backtrace::libunwind::trace::h8bb00aa01257e658 [INFO] [stdout] at /rustc/0e21a27075a8c508f00d1a4430497f17ce93d5c9/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5 [INFO] [stdout] 1: 0x55f4b1a7f620 - std::backtrace_rs::backtrace::trace_unsynchronized::hbe32e96be15adfbb [INFO] [stdout] at /rustc/0e21a27075a8c508f00d1a4430497f17ce93d5c9/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5 [INFO] [stdout] 2: 0x55f4b1a7f620 - std::sys_common::backtrace::_print_fmt::h9784b9af5bb44c28 [INFO] [stdout] at /rustc/0e21a27075a8c508f00d1a4430497f17ce93d5c9/library/std/src/sys_common/backtrace.rs:66:5 [INFO] [stdout] 3: 0x55f4b1a7f620 - ::fmt::h1c87dcc158231dee [INFO] [stdout] at /rustc/0e21a27075a8c508f00d1a4430497f17ce93d5c9/library/std/src/sys_common/backtrace.rs:45:22 [INFO] [stdout] 4: 0x55f4b1a99eec - core::fmt::write::h75398e49432c4e9d [INFO] [stdout] at /rustc/0e21a27075a8c508f00d1a4430497f17ce93d5c9/library/core/src/fmt/mod.rs:1198:17 [INFO] [stdout] 5: 0x55f4b1a7d645 - std::io::Write::write_fmt::hfcc1f182fe91dea9 [INFO] [stdout] at /rustc/0e21a27075a8c508f00d1a4430497f17ce93d5c9/library/std/src/io/mod.rs:1672:15 [INFO] [stdout] 6: 0x55f4b1a80cf1 - std::sys_common::backtrace::_print::h39d989fb5cda9189 [INFO] [stdout] at /rustc/0e21a27075a8c508f00d1a4430497f17ce93d5c9/library/std/src/sys_common/backtrace.rs:48:5 [INFO] [stdout] 7: 0x55f4b1a80cf1 - std::sys_common::backtrace::print::hafd951f3a156e9b8 [INFO] [stdout] at /rustc/0e21a27075a8c508f00d1a4430497f17ce93d5c9/library/std/src/sys_common/backtrace.rs:35:9 [INFO] [stdout] 8: 0x55f4b1a80cf1 - std::panicking::default_hook::{{closure}}::h3c15d03d8aed3f76 [INFO] [stdout] at /rustc/0e21a27075a8c508f00d1a4430497f17ce93d5c9/library/std/src/panicking.rs:295:22 [INFO] [stdout] 9: 0x55f4b1a809c3 - std::panicking::default_hook::h6145e5c2935e997c [INFO] [stdout] at /rustc/0e21a27075a8c508f00d1a4430497f17ce93d5c9/library/std/src/panicking.rs:314:9 [INFO] [stdout] 10: 0x55f4b1a81393 - std::panicking::rust_panic_with_hook::h4418702214a7a914 [INFO] [stdout] at /rustc/0e21a27075a8c508f00d1a4430497f17ce93d5c9/library/std/src/panicking.rs:698:17 [INFO] [stdout] 11: 0x55f4b1a81249 - std::panicking::begin_panic_handler::{{closure}}::h0cc75df59cfeee86 [INFO] [stdout] at /rustc/0e21a27075a8c508f00d1a4430497f17ce93d5c9/library/std/src/panicking.rs:586:13 [INFO] [stdout] 12: 0x55f4b1a7faf4 - std::sys_common::backtrace::__rust_end_short_backtrace::hfebe76dc31b59894 [INFO] [stdout] at /rustc/0e21a27075a8c508f00d1a4430497f17ce93d5c9/library/std/src/sys_common/backtrace.rs:138:18 [INFO] [stdout] 13: 0x55f4b1a80fb2 - rust_begin_unwind [INFO] [stdout] at /rustc/0e21a27075a8c508f00d1a4430497f17ce93d5c9/library/std/src/panicking.rs:584:5 [INFO] [stdout] 14: 0x55f4b1a29b23 - core::panicking::panic_fmt::h28c6dc36de3ad6b2 [INFO] [stdout] at /rustc/0e21a27075a8c508f00d1a4430497f17ce93d5c9/library/core/src/panicking.rs:142:14 [INFO] [stdout] 15: 0x55f4b1a299ed - core::panicking::panic::hc2d11c2340f50dae [INFO] [stdout] at /rustc/0e21a27075a8c508f00d1a4430497f17ce93d5c9/library/core/src/panicking.rs:48:5 [INFO] [stdout] 16: 0x55f4b1a2b4fb - rust_string_random::random::h097ab8bad45ef6c7 [INFO] [stdout] at /opt/rustwide/workdir/src/lib.rs:52:27 [INFO] [stdout] 17: 0x55f4b1a2a292 - rust_out::main::_doctest_main_src_lib_rs_14_0::hc061193ec69d426b [INFO] [stdout] 18: 0x55f4b1a2a1c6 - rust_out::main::h812081239f051b97 [INFO] [stdout] 19: 0x55f4b1a29eb3 - core::ops::function::FnOnce::call_once::h5a631b3d75e7bcc6 [INFO] [stdout] 20: 0x55f4b1a29e39 - std::sys_common::backtrace::__rust_begin_short_backtrace::h25e22527b0045bd7 [INFO] [stdout] 21: 0x55f4b1a29e79 - std::rt::lang_start::{{closure}}::h2e708910b28ed99a [INFO] [stdout] 22: 0x55f4b1a7b83a - core::ops::function::impls:: for &F>::call_once::h7be219dbd70ffedb [INFO] [stdout] at /rustc/0e21a27075a8c508f00d1a4430497f17ce93d5c9/library/core/src/ops/function.rs:280:13 [INFO] [stdout] 23: 0x55f4b1a7b83a - std::panicking::try::do_call::h6c27833b58920e81 [INFO] [stdout] at /rustc/0e21a27075a8c508f00d1a4430497f17ce93d5c9/library/std/src/panicking.rs:492:40 [INFO] [stdout] 24: 0x55f4b1a7b83a - std::panicking::try::hd8d59d23e10d714a [INFO] [stdout] at /rustc/0e21a27075a8c508f00d1a4430497f17ce93d5c9/library/std/src/panicking.rs:456:19 [INFO] [stdout] 25: 0x55f4b1a7b83a - std::panic::catch_unwind::h1d82d0e63ffdc224 [INFO] [stdout] at /rustc/0e21a27075a8c508f00d1a4430497f17ce93d5c9/library/std/src/panic.rs:137:14 [INFO] [stdout] 26: 0x55f4b1a7b83a - std::rt::lang_start_internal::{{closure}}::hacd006002d4c6a17 [INFO] [stdout] at /rustc/0e21a27075a8c508f00d1a4430497f17ce93d5c9/library/std/src/rt.rs:128:48 [INFO] [stdout] 27: 0x55f4b1a7b83a - std::panicking::try::do_call::h829204b49040e500 [INFO] [stdout] at /rustc/0e21a27075a8c508f00d1a4430497f17ce93d5c9/library/std/src/panicking.rs:492:40 [INFO] [stdout] 28: 0x55f4b1a7b83a - std::panicking::try::h8eb6c92dfca0d8b4 [INFO] [stdout] at /rustc/0e21a27075a8c508f00d1a4430497f17ce93d5c9/library/std/src/panicking.rs:456:19 [INFO] [stdout] 29: 0x55f4b1a7b83a - std::panic::catch_unwind::h842a2d475302e61a [INFO] [stdout] at /rustc/0e21a27075a8c508f00d1a4430497f17ce93d5c9/library/std/src/panic.rs:137:14 [INFO] [stdout] 30: 0x55f4b1a7b83a - std::rt::lang_start_internal::hc080f788ef65dd36 [INFO] [stdout] at /rustc/0e21a27075a8c508f00d1a4430497f17ce93d5c9/library/std/src/rt.rs:128:20 [INFO] [stdout] 31: 0x55f4b1a29e61 - std::rt::lang_start::h403ed1376cbbde1c [INFO] [stdout] 32: 0x55f4b1a2a323 - main [INFO] [stdout] 33: 0x7ff400f9d083 - __libc_start_main [INFO] [stdout] 34: 0x55f4b1a29d6e - _start [INFO] [stdout] 35: 0x0 - [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] failures: [INFO] [stdout] src/lib.rs - random (line 14) [INFO] [stdout] [INFO] [stdout] test result: FAILED. 0 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.47s [INFO] [stdout] [INFO] [stderr] error: test failed, to rerun pass '--doc' [INFO] running `Command { std: "docker" "inspect" "9f002eba3b1cc50fcf119f672d8a8e8e5e6d990b0a3d4c1653c71fcb0ab3f730", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "9f002eba3b1cc50fcf119f672d8a8e8e5e6d990b0a3d4c1653c71fcb0ab3f730", kill_on_drop: false }` [INFO] [stdout] 9f002eba3b1cc50fcf119f672d8a8e8e5e6d990b0a3d4c1653c71fcb0ab3f730