[INFO] fetching crate incremental-writer 0.1.2... [INFO] testing incremental-writer-0.1.2 against master#c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38 for pr-146098-7 [INFO] extracting crate incremental-writer 0.1.2 into /workspace/builds/worker-2-tc1/source [INFO] started tweaking crates.io crate incremental-writer 0.1.2 [INFO] finished tweaking crates.io crate incremental-writer 0.1.2 [INFO] tweaked toml for crates.io crate incremental-writer 0.1.2 written to /workspace/builds/worker-2-tc1/source/Cargo.toml [INFO] validating manifest of crates.io crate incremental-writer 0.1.2 on toolchain c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate crates.io crate incremental-writer 0.1.2 already has a lockfile, it will not be regenerated [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded itoa v0.4.6 [INFO] [stderr] Downloaded serde_derive v1.0.115 [INFO] [stderr] Downloaded serde_json v1.0.57 [INFO] [stderr] Downloaded serde v1.0.115 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 507d68cfe82be46da0b7e9e90bc87cea27857dcf1f2de929c1fc759eec9f1bfb [INFO] running `Command { std: "docker" "start" "-a" "507d68cfe82be46da0b7e9e90bc87cea27857dcf1f2de929c1fc759eec9f1bfb", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "507d68cfe82be46da0b7e9e90bc87cea27857dcf1f2de929c1fc759eec9f1bfb", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "507d68cfe82be46da0b7e9e90bc87cea27857dcf1f2de929c1fc759eec9f1bfb", kill_on_drop: false }` [INFO] [stdout] 507d68cfe82be46da0b7e9e90bc87cea27857dcf1f2de929c1fc759eec9f1bfb [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 28824732380c1f3fb737439f7c86e6e0721086a9a37a9ccce9fd29f2036433ef [INFO] running `Command { std: "docker" "start" "-a" "28824732380c1f3fb737439f7c86e6e0721086a9a37a9ccce9fd29f2036433ef", kill_on_drop: false }` [INFO] [stderr] Compiling proc-macro2 v1.0.19 [INFO] [stderr] Compiling syn v1.0.38 [INFO] [stderr] Compiling serde_derive v1.0.115 [INFO] [stderr] Compiling serde v1.0.115 [INFO] [stderr] Compiling ryu v1.0.5 [INFO] [stderr] Compiling serde_json v1.0.57 [INFO] [stderr] Compiling itoa v0.4.6 [INFO] [stderr] Compiling quote v1.0.7 [INFO] [stderr] Compiling incremental-writer v0.1.2 (/opt/rustwide/workdir) [INFO] [stdout] warning: struct `Record` is never constructed [INFO] [stdout] --> src/json/mod.rs:104:8 [INFO] [stdout] | [INFO] [stdout] 104 | struct Record { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 13.32s [INFO] running `Command { std: "docker" "inspect" "28824732380c1f3fb737439f7c86e6e0721086a9a37a9ccce9fd29f2036433ef", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "28824732380c1f3fb737439f7c86e6e0721086a9a37a9ccce9fd29f2036433ef", kill_on_drop: false }` [INFO] [stdout] 28824732380c1f3fb737439f7c86e6e0721086a9a37a9ccce9fd29f2036433ef [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 691b428bd8cc3d3423ab1514c6a70c8089ba65543926e3cb3316275945bf8508 [INFO] running `Command { std: "docker" "start" "-a" "691b428bd8cc3d3423ab1514c6a70c8089ba65543926e3cb3316275945bf8508", kill_on_drop: false }` [INFO] [stderr] Compiling incremental-writer v0.1.2 (/opt/rustwide/workdir) [INFO] [stdout] warning: struct `Record` is never constructed [INFO] [stdout] --> src/json/mod.rs:104:8 [INFO] [stdout] | [INFO] [stdout] 104 | struct Record { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 0.50s [INFO] running `Command { std: "docker" "inspect" "691b428bd8cc3d3423ab1514c6a70c8089ba65543926e3cb3316275945bf8508", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "691b428bd8cc3d3423ab1514c6a70c8089ba65543926e3cb3316275945bf8508", kill_on_drop: false }` [INFO] [stdout] 691b428bd8cc3d3423ab1514c6a70c8089ba65543926e3cb3316275945bf8508 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] 6db7c44ad43529fa5c7a91a47e85750d3c1bf35d62c692ae4363119610ee6222 [INFO] running `Command { std: "docker" "start" "-a" "6db7c44ad43529fa5c7a91a47e85750d3c1bf35d62c692ae4363119610ee6222", kill_on_drop: false }` [INFO] [stderr] warning: struct `Record` is never constructed [INFO] [stderr] --> src/json/mod.rs:104:8 [INFO] [stderr] | [INFO] [stderr] 104 | struct Record { [INFO] [stderr] | ^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stderr] [INFO] [stderr] warning: `incremental-writer` (lib) generated 1 warning [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 0.04s [INFO] [stderr] Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/incremental_writer-f0f80d6a6991dd3f) [INFO] [stdout] [INFO] [stdout] running 1 test [INFO] [stdout] test json::writer_writes_square_brackets_to_buffer ... FAILED [INFO] [stdout] [INFO] [stdout] failures: [INFO] [stdout] [INFO] [stdout] ---- json::writer_writes_square_brackets_to_buffer stdout ---- [INFO] [stdout] [INFO] [stdout] thread 'json::writer_writes_square_brackets_to_buffer' (16) panicked at src/json/mod.rs:81:46: [INFO] [stdout] called `Result::unwrap()` on an `Err` value: Os { code: 30, kind: ReadOnlyFilesystem, message: "Read-only file system" } [INFO] [stdout] stack backtrace: [INFO] [stdout] 0: 0x62333edb3d52 - std::backtrace_rs::backtrace::libunwind::trace::ha50a1f28c7a10cf8 [INFO] [stdout] at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9 [INFO] [stdout] 1: 0x62333edb3d52 - std::backtrace_rs::backtrace::trace_unsynchronized::h34f8c4ec82a320bc [INFO] [stdout] at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14 [INFO] [stdout] 2: 0x62333edb3d52 - std::sys::backtrace::_print_fmt::h2d23e84e13d343bc [INFO] [stdout] at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:66:9 [INFO] [stdout] 3: 0x62333edb3d52 - ::fmt::hde21067283f7e82e [INFO] [stdout] at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:39:26 [INFO] [stdout] 4: 0x62333edc3c1f - core::fmt::rt::Argument::fmt::he65307037dca33c6 [INFO] [stdout] at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/fmt/rt.rs:173:76 [INFO] [stdout] 5: 0x62333edc3c1f - core::fmt::write::h24186904251c31cb [INFO] [stdout] at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/fmt/mod.rs:1469:25 [INFO] [stdout] 6: 0x62333ed81843 - std::io::default_write_fmt::h4e8d11c5c4b9cafe [INFO] [stdout] at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/io/mod.rs:639:11 [INFO] [stdout] 7: 0x62333ed81843 - std::io::Write::write_fmt::ha849be0824d095ef [INFO] [stdout] at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/io/mod.rs:1954:13 [INFO] [stdout] 8: 0x62333ed8d4b2 - std::sys::backtrace::BacktraceLock::print::he038489aba5894a6 [INFO] [stdout] at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:42:9 [INFO] [stdout] 9: 0x62333ed91f8f - std::panicking::default_hook::{{closure}}::h80a26d916c49679b [INFO] [stdout] at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:301:27 [INFO] [stdout] 10: 0x62333ed91e21 - std::panicking::default_hook::he2e9efee79b3dce9 [INFO] [stdout] at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:325:9 [INFO] [stdout] 11: 0x62333ed54cae - as core::ops::function::Fn>::call::h202f496763929329 [INFO] [stdout] at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/alloc/src/boxed.rs:2099:9 [INFO] [stdout] 12: 0x62333ed54cae - test::test_main_with_exit_callback::{{closure}}::h805a6913adddaea3 [INFO] [stdout] at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:145:21 [INFO] [stdout] 13: 0x62333ed9259f - as core::ops::function::Fn>::call::h2883c9d2dbd4e81c [INFO] [stdout] at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/alloc/src/boxed.rs:2099:9 [INFO] [stdout] 14: 0x62333ed9259f - std::panicking::panic_with_hook::hf5648b7cec6bc73e [INFO] [stdout] at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:842:13 [INFO] [stdout] 15: 0x62333ed923fa - std::panicking::panic_handler::{{closure}}::h1b2ed3864ba94359 [INFO] [stdout] at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:707:13 [INFO] [stdout] 16: 0x62333ed8d5e9 - std::sys::backtrace::__rust_end_short_backtrace::hd0186b2b27f5aaa7 [INFO] [stdout] at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:174:18 [INFO] [stdout] 17: 0x62333ed75edd - __rustc[f7dae8b92efe1d7a]::rust_begin_unwind [INFO] [stdout] at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:698:5 [INFO] [stdout] 18: 0x62333edcb540 - core::panicking::panic_fmt::hb5d6b83773432920 [INFO] [stdout] at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panicking.rs:80:14 [INFO] [stdout] 19: 0x62333edcac26 - core::result::unwrap_failed::h427ee4a8bb06d8af [INFO] [stdout] at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/result.rs:1862:5 [INFO] [stdout] 20: 0x62333ed29f91 - core::result::Result::unwrap::hb4eef66462c2c30f [INFO] [stdout] at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/result.rs:1233:23 [INFO] [stdout] 21: 0x62333ed29f91 - incremental_writer::json::writer_writes_square_brackets_to_buffer::h010a3596f4fab60b [INFO] [stdout] at /opt/rustwide/workdir/src/json/mod.rs:81:46 [INFO] [stdout] 22: 0x62333ed2ab57 - incremental_writer::json::writer_writes_square_brackets_to_buffer::{{closure}}::hdb935cc6a576ec83 [INFO] [stdout] at /opt/rustwide/workdir/src/json/mod.rs:64:45 [INFO] [stdout] 23: 0x62333ed2b616 - core::ops::function::FnOnce::call_once::hdca76cddab509fe7 [INFO] [stdout] at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 24: 0x62333ed54b1b - core::ops::function::FnOnce::call_once::h3a2d82edd1a9b770 [INFO] [stdout] at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 25: 0x62333ed54b1b - test::__rust_begin_short_backtrace::h85d4fe5033219107 [INFO] [stdout] at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:663:18 [INFO] [stdout] 26: 0x62333ed68b0d - test::run_test_in_process::{{closure}}::h67b48a81b9c9d7b6 [INFO] [stdout] at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:686:74 [INFO] [stdout] 27: 0x62333ed68b0d - as core::ops::function::FnOnce<()>>::call_once::h7680585480377cb5 [INFO] [stdout] at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panic/unwind_safe.rs:274:9 [INFO] [stdout] 28: 0x62333ed68b0d - std::panicking::catch_unwind::do_call::hf71351b2657d4002 [INFO] [stdout] at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:590:40 [INFO] [stdout] 29: 0x62333ed68b0d - std::panicking::catch_unwind::h7fcb5c0312d9e172 [INFO] [stdout] at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:553:19 [INFO] [stdout] 30: 0x62333ed68b0d - std::panic::catch_unwind::h5cf3c9bdee894ebe [INFO] [stdout] at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panic.rs:359:14 [INFO] [stdout] 31: 0x62333ed68b0d - test::run_test_in_process::h1469cb85193a3a25 [INFO] [stdout] at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:686:27 [INFO] [stdout] 32: 0x62333ed68b0d - test::run_test::{{closure}}::h59d45b3cd6453d69 [INFO] [stdout] at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:607:43 [INFO] [stdout] 33: 0x62333ed42054 - test::run_test::{{closure}}::h9baa0c3d443f28c9 [INFO] [stdout] at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:637:41 [INFO] [stdout] 34: 0x62333ed42054 - std::sys::backtrace::__rust_begin_short_backtrace::h97ea8cee4828663e [INFO] [stdout] at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:158:18 [INFO] [stdout] 35: 0x62333ed458aa - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h5d7539d5f78cee61 [INFO] [stdout] at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/thread/mod.rs:562:17 [INFO] [stdout] 36: 0x62333ed458aa - as core::ops::function::FnOnce<()>>::call_once::he4c551e23c5e9b22 [INFO] [stdout] at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panic/unwind_safe.rs:274:9 [INFO] [stdout] 37: 0x62333ed458aa - std::panicking::catch_unwind::do_call::h522b41a6c157aaba [INFO] [stdout] at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:590:40 [INFO] [stdout] 38: 0x62333ed458aa - std::panicking::catch_unwind::h0efbf72006b8e365 [INFO] [stdout] at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:553:19 [INFO] [stdout] 39: 0x62333ed458aa - std::panic::catch_unwind::h3b081041e6c97066 [INFO] [stdout] at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panic.rs:359:14 [INFO] [stdout] 40: 0x62333ed458aa - std::thread::Builder::spawn_unchecked_::{{closure}}::ha751309815d5d8cf [INFO] [stdout] at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/thread/mod.rs:560:30 [INFO] [stdout] 41: 0x62333ed458aa - core::ops::function::FnOnce::call_once{{vtable.shim}}::h2084b887a5fe25a7 [INFO] [stdout] at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 42: 0x62333ed889ef - as core::ops::function::FnOnce>::call_once::h3adbd6ccf5f737af [INFO] [stdout] at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/alloc/src/boxed.rs:2085:9 [INFO] [stdout] 43: 0x62333ed889ef - std::sys::thread::unix::Thread::new::thread_start::hb3dc6483caa1b987 [INFO] [stdout] at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/thread/unix.rs:124:17 [INFO] [stdout] 44: 0x7030ff180aa4 - [INFO] [stdout] 45: 0x7030ff20da64 - clone [INFO] [stdout] 46: 0x0 - [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] failures: [INFO] [stdout] json::writer_writes_square_brackets_to_buffer [INFO] [stdout] [INFO] [stdout] test result: FAILED. 0 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.05s [INFO] [stdout] [INFO] [stderr] error: test failed, to rerun pass `--lib` [INFO] running `Command { std: "docker" "inspect" "6db7c44ad43529fa5c7a91a47e85750d3c1bf35d62c692ae4363119610ee6222", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "6db7c44ad43529fa5c7a91a47e85750d3c1bf35d62c692ae4363119610ee6222", kill_on_drop: false }` [INFO] [stdout] 6db7c44ad43529fa5c7a91a47e85750d3c1bf35d62c692ae4363119610ee6222