[INFO] fetching crate rust-string-random 0.1.0... [INFO] testing rust-string-random-0.1.0 against master#e9385f9eea0221ef295a188d49d16f8f5189abf1 for pr-146098 [INFO] extracting crate rust-string-random 0.1.0 into /workspace/builds/worker-5-tc1/source [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-5-tc1/source/Cargo.toml [INFO] validating manifest of crates.io crate rust-string-random 0.1.0 on toolchain e9385f9eea0221ef295a188d49d16f8f5189abf1 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+e9385f9eea0221ef295a188d49d16f8f5189abf1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+e9385f9eea0221ef295a188d49d16f8f5189abf1" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Locking 15 packages to latest compatible versions [INFO] [stderr] Adding rand v0.7.3 (available: v0.9.2) [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+e9385f9eea0221ef295a188d49d16f8f5189abf1" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+e9385f9eea0221ef295a188d49d16f8f5189abf1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 40464ba4c6769057a48023f685f030624674a0ecaa1ed3e95334b86fcb3e2fc6 [INFO] running `Command { std: "docker" "start" "-a" "40464ba4c6769057a48023f685f030624674a0ecaa1ed3e95334b86fcb3e2fc6", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "40464ba4c6769057a48023f685f030624674a0ecaa1ed3e95334b86fcb3e2fc6", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "40464ba4c6769057a48023f685f030624674a0ecaa1ed3e95334b86fcb3e2fc6", kill_on_drop: false }` [INFO] [stdout] 40464ba4c6769057a48023f685f030624674a0ecaa1ed3e95334b86fcb3e2fc6 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+e9385f9eea0221ef295a188d49d16f8f5189abf1" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 77a22a449e94582b8f8ccedd0019523b1f833ba0907459534a7c4725a24f2bce [INFO] running `Command { std: "docker" "start" "-a" "77a22a449e94582b8f8ccedd0019523b1f833ba0907459534a7c4725a24f2bce", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.176 [INFO] [stderr] Compiling getrandom v0.1.16 [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` profile [unoptimized + debuginfo] target(s) in 3.77s [INFO] running `Command { std: "docker" "inspect" "77a22a449e94582b8f8ccedd0019523b1f833ba0907459534a7c4725a24f2bce", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "77a22a449e94582b8f8ccedd0019523b1f833ba0907459534a7c4725a24f2bce", kill_on_drop: false }` [INFO] [stdout] 77a22a449e94582b8f8ccedd0019523b1f833ba0907459534a7c4725a24f2bce [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+e9385f9eea0221ef295a188d49d16f8f5189abf1" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] dec5cfeb16b73cefa89c6e469a308ee1ad706417dc6150b6320bfdd5b5ea8fb4 [INFO] running `Command { std: "docker" "start" "-a" "dec5cfeb16b73cefa89c6e469a308ee1ad706417dc6150b6320bfdd5b5ea8fb4", kill_on_drop: false }` [INFO] [stderr] Compiling rust-string-random v0.1.0 (/opt/rustwide/workdir) [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 0.51s [INFO] running `Command { std: "docker" "inspect" "dec5cfeb16b73cefa89c6e469a308ee1ad706417dc6150b6320bfdd5b5ea8fb4", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "dec5cfeb16b73cefa89c6e469a308ee1ad706417dc6150b6320bfdd5b5ea8fb4", kill_on_drop: false }` [INFO] [stdout] dec5cfeb16b73cefa89c6e469a308ee1ad706417dc6150b6320bfdd5b5ea8fb4 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+e9385f9eea0221ef295a188d49d16f8f5189abf1" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] 61c3ffebae095a5aebae536d56a591e2656d84e463f0f8fa1ce77a03c9c5199a [INFO] running `Command { std: "docker" "start" "-a" "61c3ffebae095a5aebae536d56a591e2656d84e463f0f8fa1ce77a03c9c5199a", kill_on_drop: false }` [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 0.08s [INFO] [stderr] Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/rust_string_random-212158bbb45182bb) [INFO] [stdout] [INFO] [stdout] running 1 test [INFO] [stdout] test tests::string_random ... ok [INFO] [stderr] Doc-tests rust_string_random [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] [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] [INFO] [stdout] thread 'main' (40) panicked at src/lib.rs:52:27: [INFO] [stdout] attempt to subtract with overflow [INFO] [stdout] stack backtrace: [INFO] [stdout] 0: 0x5be448235582 - std::backtrace_rs::backtrace::libunwind::trace::h66a2a7c2ae287f78 [INFO] [stdout] at /rustc/e9385f9eea0221ef295a188d49d16f8f5189abf1/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9 [INFO] [stdout] 1: 0x5be448235582 - std::backtrace_rs::backtrace::trace_unsynchronized::hfc2e0cbc9b584495 [INFO] [stdout] at /rustc/e9385f9eea0221ef295a188d49d16f8f5189abf1/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14 [INFO] [stdout] 2: 0x5be448235582 - std::sys::backtrace::_print_fmt::h118f0de0547bd6e5 [INFO] [stdout] at /rustc/e9385f9eea0221ef295a188d49d16f8f5189abf1/library/std/src/sys/backtrace.rs:66:9 [INFO] [stdout] 3: 0x5be448235582 - ::fmt::h4a7ebf3c97b63e54 [INFO] [stdout] at /rustc/e9385f9eea0221ef295a188d49d16f8f5189abf1/library/std/src/sys/backtrace.rs:39:26 [INFO] [stdout] 4: 0x5be448244a3f - core::fmt::rt::Argument::fmt::h614abe7b62e687bb [INFO] [stdout] at /rustc/e9385f9eea0221ef295a188d49d16f8f5189abf1/library/core/src/fmt/rt.rs:173:76 [INFO] [stdout] 5: 0x5be448244a3f - core::fmt::write::h5e5759cada453e98 [INFO] [stdout] at /rustc/e9385f9eea0221ef295a188d49d16f8f5189abf1/library/core/src/fmt/mod.rs:1468:25 [INFO] [stdout] 6: 0x5be448213851 - std::io::default_write_fmt::h6f5532915a01b00a [INFO] [stdout] at /rustc/e9385f9eea0221ef295a188d49d16f8f5189abf1/library/std/src/io/mod.rs:639:11 [INFO] [stdout] 7: 0x5be448213851 - std::io::Write::write_fmt::h503716d2664a2999 [INFO] [stdout] at /rustc/e9385f9eea0221ef295a188d49d16f8f5189abf1/library/std/src/io/mod.rs:1954:13 [INFO] [stdout] 8: 0x5be4482188f2 - std::sys::backtrace::BacktraceLock::print::haede8464af6f6593 [INFO] [stdout] at /rustc/e9385f9eea0221ef295a188d49d16f8f5189abf1/library/std/src/sys/backtrace.rs:42:9 [INFO] [stdout] 9: 0x5be44821a20c - std::panicking::default_hook::{{closure}}::hd1d459f3747276de [INFO] [stdout] at /rustc/e9385f9eea0221ef295a188d49d16f8f5189abf1/library/std/src/panicking.rs:301:27 [INFO] [stdout] 10: 0x5be44821a066 - std::panicking::default_hook::h4615f5c23d4bd826 [INFO] [stdout] at /rustc/e9385f9eea0221ef295a188d49d16f8f5189abf1/library/std/src/panicking.rs:328:9 [INFO] [stdout] 11: 0x5be44821a895 - std::panicking::panic_with_hook::h290022751dfbc99c [INFO] [stdout] at /rustc/e9385f9eea0221ef295a188d49d16f8f5189abf1/library/std/src/panicking.rs:834:13 [INFO] [stdout] 12: 0x5be44821a6f6 - std::panicking::panic_handler::{{closure}}::h8a82486ef1115454 [INFO] [stdout] at /rustc/e9385f9eea0221ef295a188d49d16f8f5189abf1/library/std/src/panicking.rs:700:13 [INFO] [stdout] 13: 0x5be448218a29 - std::sys::backtrace::__rust_end_short_backtrace::h24c7668dbf64a695 [INFO] [stdout] at /rustc/e9385f9eea0221ef295a188d49d16f8f5189abf1/library/std/src/sys/backtrace.rs:174:18 [INFO] [stdout] 14: 0x5be4482083bd - __rustc[c97015d5850a580e]::rust_begin_unwind [INFO] [stdout] at /rustc/e9385f9eea0221ef295a188d49d16f8f5189abf1/library/std/src/panicking.rs:698:5 [INFO] [stdout] 15: 0x5be448247bb0 - core::panicking::panic_fmt::h28e12f8802cd0928 [INFO] [stdout] at /rustc/e9385f9eea0221ef295a188d49d16f8f5189abf1/library/core/src/panicking.rs:78:14 [INFO] [stdout] 16: 0x5be448247797 - core::panicking::panic_const::panic_const_sub_overflow::h291762f0c77b4ff6 [INFO] [stdout] at /rustc/e9385f9eea0221ef295a188d49d16f8f5189abf1/library/core/src/panicking.rs:178:17 [INFO] [stdout] 17: 0x5be4481d0a41 - rust_string_random::random::h0f1999bc2bc2a612 [INFO] [stdout] at /opt/rustwide/workdir/src/lib.rs:52:27 [INFO] [stdout] 18: 0x5be4481cf904 - rust_out::main::_doctest_main_src_lib_rs_14_0::ha7f5823b6b05ed67 [INFO] [stdout] 19: 0x5be4481cf846 - rust_out::main::hb22b1395de73f456 [INFO] [stdout] 20: 0x5be4481cf5c3 - core::ops::function::FnOnce::call_once::h5ed97ba2579b91d6 [INFO] [stdout] 21: 0x5be4481cf5a6 - std::sys::backtrace::__rust_begin_short_backtrace::h846c7e453f901015 [INFO] [stdout] 22: 0x5be4481cf589 - std::rt::lang_start::{{closure}}::hfc3e6038d6e2d99f [INFO] [stdout] 23: 0x5be448214960 - core::ops::function::impls:: for &F>::call_once::h968e9241fe7c2037 [INFO] [stdout] at /rustc/e9385f9eea0221ef295a188d49d16f8f5189abf1/library/core/src/ops/function.rs:287:21 [INFO] [stdout] 24: 0x5be448214960 - std::panicking::catch_unwind::do_call::h45ef651a412481b5 [INFO] [stdout] at /rustc/e9385f9eea0221ef295a188d49d16f8f5189abf1/library/std/src/panicking.rs:590:40 [INFO] [stdout] 25: 0x5be448214960 - std::panicking::catch_unwind::hcaa3034585148361 [INFO] [stdout] at /rustc/e9385f9eea0221ef295a188d49d16f8f5189abf1/library/std/src/panicking.rs:553:19 [INFO] [stdout] 26: 0x5be448214960 - std::panic::catch_unwind::ha29e7dd569426822 [INFO] [stdout] at /rustc/e9385f9eea0221ef295a188d49d16f8f5189abf1/library/std/src/panic.rs:359:14 [INFO] [stdout] 27: 0x5be448214960 - std::rt::lang_start_internal::{{closure}}::h1174a1e1c9fac06b [INFO] [stdout] at /rustc/e9385f9eea0221ef295a188d49d16f8f5189abf1/library/std/src/rt.rs:175:24 [INFO] [stdout] 28: 0x5be448214960 - std::panicking::catch_unwind::do_call::h2405b56a0869833e [INFO] [stdout] at /rustc/e9385f9eea0221ef295a188d49d16f8f5189abf1/library/std/src/panicking.rs:590:40 [INFO] [stdout] 29: 0x5be448214960 - std::panicking::catch_unwind::hb69d6a3eb24e9b7e [INFO] [stdout] at /rustc/e9385f9eea0221ef295a188d49d16f8f5189abf1/library/std/src/panicking.rs:553:19 [INFO] [stdout] 30: 0x5be448214960 - std::panic::catch_unwind::ha4cc96915d08b99e [INFO] [stdout] at /rustc/e9385f9eea0221ef295a188d49d16f8f5189abf1/library/std/src/panic.rs:359:14 [INFO] [stdout] 31: 0x5be448214960 - std::rt::lang_start_internal::h743e0642e9937917 [INFO] [stdout] at /rustc/e9385f9eea0221ef295a188d49d16f8f5189abf1/library/std/src/rt.rs:171:5 [INFO] [stdout] 32: 0x5be4481cf571 - std::rt::lang_start::h03d20ae2166acee7 [INFO] [stdout] 33: 0x5be4481cfa15 - main [INFO] [stdout] 34: 0x7ebc9f53e1ca - [INFO] [stdout] 35: 0x7ebc9f53e28b - __libc_start_main [INFO] [stdout] 36: 0x5be4481cf485 - _start [INFO] [stdout] 37: 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 0.37s [INFO] [stdout] [INFO] [stderr] error: doctest failed, to rerun pass `--doc` [INFO] running `Command { std: "docker" "inspect" "61c3ffebae095a5aebae536d56a591e2656d84e463f0f8fa1ce77a03c9c5199a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "61c3ffebae095a5aebae536d56a591e2656d84e463f0f8fa1ce77a03c9c5199a", kill_on_drop: false }` [INFO] [stdout] 61c3ffebae095a5aebae536d56a591e2656d84e463f0f8fa1ce77a03c9c5199a