[INFO] fetching crate zserio 0.5.2...
[INFO] testing zserio-0.5.2 against beta-2025-10-28 for beta-1.92-2
[INFO] extracting crate zserio 0.5.2 into /workspace/builds/worker-3-tc2/source
[INFO] started tweaking crates.io crate zserio 0.5.2
[INFO] finished tweaking crates.io crate zserio 0.5.2
[INFO] tweaked toml for crates.io crate zserio 0.5.2 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate zserio 0.5.2 on toolchain beta-2025-10-28
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-10-28" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate zserio 0.5.2 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" "+beta-2025-10-28" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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" "+beta-2025-10-28" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 93fef06c7614638fcc7dd3fd1da1bd150bda58298edf1a24d79b7c7db46ee4f6
[INFO] running `Command { std: "docker" "start" "-a" "93fef06c7614638fcc7dd3fd1da1bd150bda58298edf1a24d79b7c7db46ee4f6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "93fef06c7614638fcc7dd3fd1da1bd150bda58298edf1a24d79b7c7db46ee4f6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "93fef06c7614638fcc7dd3fd1da1bd150bda58298edf1a24d79b7c7db46ee4f6", kill_on_drop: false }`
[INFO] [stdout] 93fef06c7614638fcc7dd3fd1da1bd150bda58298edf1a24d79b7c7db46ee4f6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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" "+beta-2025-10-28" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e2cb6c35bed8f6c026102773fe28d0987d56260618dc9468da5767964ea53b74
[INFO] running `Command { std: "docker" "start" "-a" "e2cb6c35bed8f6c026102773fe28d0987d56260618dc9468da5767964ea53b74", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.86
[INFO] [stderr]    Compiling unicode-ident v1.0.12
[INFO] [stderr]    Compiling autocfg v1.3.0
[INFO] [stderr]    Compiling version_check v0.9.4
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling thiserror v1.0.63
[INFO] [stderr]    Compiling heck v0.4.1
[INFO] [stderr]    Compiling half v2.4.1
[INFO] [stderr]    Compiling bitreader v0.3.8
[INFO] [stderr]    Compiling rust-bitwriter v0.0.1
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling quote v1.0.36
[INFO] [stderr]    Compiling syn v2.0.74
[INFO] [stderr]    Compiling num-integer v0.1.46
[INFO] [stderr]    Compiling num-complex v0.4.6
[INFO] [stderr]    Compiling duplicate v1.0.0
[INFO] [stderr]    Compiling num-bigint v0.4.6
[INFO] [stderr]    Compiling num-iter v0.1.45
[INFO] [stderr]    Compiling num-rational v0.4.2
[INFO] [stderr]    Compiling num v0.4.3
[INFO] [stderr]    Compiling thiserror-impl v1.0.63
[INFO] [stderr]    Compiling bitmask-enum v2.2.5
[INFO] [stderr]    Compiling zserio v0.5.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.44s
[INFO] running `Command { std: "docker" "inspect" "e2cb6c35bed8f6c026102773fe28d0987d56260618dc9468da5767964ea53b74", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e2cb6c35bed8f6c026102773fe28d0987d56260618dc9468da5767964ea53b74", kill_on_drop: false }`
[INFO] [stdout] e2cb6c35bed8f6c026102773fe28d0987d56260618dc9468da5767964ea53b74
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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" "+beta-2025-10-28" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c952d7556d667fee348e59078efdb3d65eddafeeff6ff9add2d9976de7289ecd
[INFO] running `Command { std: "docker" "start" "-a" "c952d7556d667fee348e59078efdb3d65eddafeeff6ff9add2d9976de7289ecd", kill_on_drop: false }`
[INFO] [stderr]    Compiling semver v1.0.23
[INFO] [stderr]    Compiling equivalent v1.0.1
[INFO] [stderr]    Compiling futures-core v0.3.30
[INFO] [stderr]    Compiling memchr v2.7.4
[INFO] [stderr]    Compiling futures-sink v0.3.30
[INFO] [stderr]    Compiling hashbrown v0.14.5
[INFO] [stderr]    Compiling pin-utils v0.1.0
[INFO] [stderr]    Compiling futures-task v0.3.30
[INFO] [stderr]    Compiling pin-project-lite v0.2.14
[INFO] [stderr]    Compiling slab v0.4.9
[INFO] [stderr]    Compiling regex-syntax v0.8.4
[INFO] [stderr]    Compiling toml_datetime v0.6.8
[INFO] [stderr]    Compiling syn v2.0.74
[INFO] [stderr]    Compiling winnow v0.5.40
[INFO] [stderr]    Compiling futures-io v0.3.30
[INFO] [stderr]    Compiling relative-path v1.9.3
[INFO] [stderr]    Compiling glob v0.3.1
[INFO] [stderr]    Compiling futures-timer v3.0.3
[INFO] [stderr]    Compiling futures-channel v0.3.30
[INFO] [stderr]    Compiling rustc_version v0.4.0
[INFO] [stderr]    Compiling aho-corasick v1.1.3
[INFO] [stderr]    Compiling rstest_macros v0.22.0
[INFO] [stderr]    Compiling indexmap v2.4.0
[INFO] [stderr]    Compiling regex-automata v0.4.7
[INFO] [stderr]    Compiling toml_edit v0.21.1
[INFO] [stderr]    Compiling proc-macro-crate v3.1.0
[INFO] [stderr]    Compiling regex v1.10.6
[INFO] [stderr]    Compiling futures-macro v0.3.30
[INFO] [stderr]    Compiling thiserror-impl v1.0.63
[INFO] [stderr]    Compiling bitmask-enum v2.2.5
[INFO] [stderr]    Compiling futures-util v0.3.30
[INFO] [stderr]    Compiling thiserror v1.0.63
[INFO] [stderr]    Compiling zserio v0.5.2 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling futures-executor v0.3.30
[INFO] [stderr]    Compiling futures v0.3.30
[INFO] [stderr]    Compiling rstest v0.22.0
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 10.80s
[INFO] running `Command { std: "docker" "inspect" "c952d7556d667fee348e59078efdb3d65eddafeeff6ff9add2d9976de7289ecd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c952d7556d667fee348e59078efdb3d65eddafeeff6ff9add2d9976de7289ecd", kill_on_drop: false }`
[INFO] [stdout] c952d7556d667fee348e59078efdb3d65eddafeeff6ff9add2d9976de7289ecd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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" "+beta-2025-10-28" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 4c1431e9768b703468643313c44c74892220a18be89aeed436b6de535287b53c
[INFO] running `Command { std: "docker" "start" "-a" "4c1431e9768b703468643313c44c74892220a18be89aeed436b6de535287b53c", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/zserio-c871047f8d4508a6)
[INFO] [stdout] 
[INFO] [stdout] running 8 tests
[INFO] [stdout] test numbits::test::test_numbits ... ok
[INFO] [stdout] test ztype::varint_decode::tests::test_read_varint32::case_1 ... ok
[INFO] [stdout] test numbits::test::test_bit_length ... ok
[INFO] [stdout] test ztype::bit_alignment::tests::alignment ... ok
[INFO] [stdout] test ztype::varint_decode::tests::test_read_varint32::case_2 ... ok
[INFO] [stdout] test ztype::varint_decode::tests::test_read_varint32::case_3 ... ok
[INFO] [stdout] test ztype::varuint_decode::tests::test_read_varuint32::case_1 ... ok
[INFO] [stdout] test ztype::varuint_decode::tests::test_read_varuint32::case_2 ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 8 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests zserio
[INFO] [stdout] 
[INFO] [stdout] running 7 tests
[INFO] [stdout] test src/lib.rs - (line 12) ... ignored
[INFO] [stdout] test src/ztype/bit_alignment.rs - ztype::bit_alignment::align_to (line 5) ... ok
[INFO] [stdout] test src/lib.rs - from_bytes (line 130) ... ok
[INFO] [stdout] test src/lib.rs - to_bytes (line 78) ... ok
[INFO] [stdout] test src/lib.rs - from_file (line 190) ... ok
[INFO] [stdout] test src/lib.rs - from_reader (line 160) ... ok
[INFO] [stdout] test src/lib.rs - to_writer (line 98) ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/lib.rs - to_writer (line 98) stdout ----
[INFO] [stdout] Test executable failed (exit status: 101).
[INFO] [stdout] 
[INFO] [stdout] stderr:
[INFO] [stdout] 
[INFO] [stdout] thread 'main' (201) panicked at src/lib.rs:9:50:
[INFO] [stdout] can not create file: Os { code: 30, kind: ReadOnlyFilesystem, message: "Read-only file system" }
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x5f8fba924e02 - std::backtrace_rs::backtrace::libunwind::trace::h16acf28769fcd909
[INFO] [stdout]                                at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x5f8fba924e02 - std::backtrace_rs::backtrace::trace_unsynchronized::hb5541aa5d4f92513
[INFO] [stdout]                                at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x5f8fba924e02 - std::sys::backtrace::_print_fmt::h8ac8268cb667a306
[INFO] [stdout]                                at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/sys/backtrace.rs:66:9
[INFO] [stdout]    3:     0x5f8fba924e02 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::h47627beda0767f4c
[INFO] [stdout]                                at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/sys/backtrace.rs:39:26
[INFO] [stdout]    4:     0x5f8fba933b3f - core::fmt::rt::Argument::fmt::h686a01ad57c1c92a
[INFO] [stdout]                                at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/core/src/fmt/rt.rs:173:76
[INFO] [stdout]    5:     0x5f8fba933b3f - core::fmt::write::h8a63064c67176fd8
[INFO] [stdout]                                at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/core/src/fmt/mod.rs:1469:25
[INFO] [stdout]    6:     0x5f8fba9035c3 - std::io::default_write_fmt::hc257f38f86d39af6
[INFO] [stdout]                                at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x5f8fba9035c3 - std::io::Write::write_fmt::h5e9b646cef91150b
[INFO] [stdout]                                at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/io/mod.rs:1954:13
[INFO] [stdout]    8:     0x5f8fba908912 - std::sys::backtrace::BacktraceLock::print::h4634d27c0afbaebb
[INFO] [stdout]                                at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/sys/backtrace.rs:42:9
[INFO] [stdout]    9:     0x5f8fba90a13c - std::panicking::default_hook::{{closure}}::h23e0299d4738b766
[INFO] [stdout]                                at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/panicking.rs:301:27
[INFO] [stdout]   10:     0x5f8fba909f96 - std::panicking::default_hook::hfeec6294e8751b62
[INFO] [stdout]                                at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/panicking.rs:328:9
[INFO] [stdout]   11:     0x5f8fba90a715 - std::panicking::panic_with_hook::hd57cd463d793ed79
[INFO] [stdout]                                at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/panicking.rs:834:13
[INFO] [stdout]   12:     0x5f8fba90a5aa - std::panicking::panic_handler::{{closure}}::hddd6216c3fddee3b
[INFO] [stdout]                                at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/panicking.rs:707:13
[INFO] [stdout]   13:     0x5f8fba908a49 - std::sys::backtrace::__rust_end_short_backtrace::h5e7a56f283378525
[INFO] [stdout]                                at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/sys/backtrace.rs:174:18
[INFO] [stdout]   14:     0x5f8fba8f819d - __rustc[256c90bb7e548b45]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/panicking.rs:698:5
[INFO] [stdout]   15:     0x5f8fba936fd0 - core::panicking::panic_fmt::hf19c198748ef6a95
[INFO] [stdout]                                at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/core/src/panicking.rs:80:14
[INFO] [stdout]   16:     0x5f8fba936716 - core::result::unwrap_failed::he81173b5792ad6b0
[INFO] [stdout]                                at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/core/src/result.rs:1862:5
[INFO] [stdout]   17:     0x5f8fba8f4d02 - core::result::Result<T,E>::expect::hccc9c1a7aba1d1cc
[INFO] [stdout]   18:     0x5f8fba8f5426 - rust_out::main::_doctest_main_src_lib_rs_98_0::hf3583a2e1815bdcd
[INFO] [stdout]   19:     0x5f8fba8f5386 - rust_out::main::he986860d8b7bc94f
[INFO] [stdout]   20:     0x5f8fba8f4693 - core::ops::function::FnOnce::call_once::hd0f888ea33950d2d
[INFO] [stdout]   21:     0x5f8fba8f4606 - std::sys::backtrace::__rust_begin_short_backtrace::h70a8cfcb1f800bff
[INFO] [stdout]   22:     0x5f8fba8f4549 - std::rt::lang_start::{{closure}}::h03ca8d00642774ee
[INFO] [stdout]   23:     0x5f8fba904970 - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::hdf957eac011d0136
[INFO] [stdout]                                at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/core/src/ops/function.rs:287:21
[INFO] [stdout]   24:     0x5f8fba904970 - std::panicking::catch_unwind::do_call::h9ff550f7799115e1
[INFO] [stdout]                                at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/panicking.rs:590:40
[INFO] [stdout]   25:     0x5f8fba904970 - std::panicking::catch_unwind::ha7ce46787bb12905
[INFO] [stdout]                                at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/panicking.rs:553:19
[INFO] [stdout]   26:     0x5f8fba904970 - std::panic::catch_unwind::h625b36596def7d39
[INFO] [stdout]                                at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/panic.rs:359:14
[INFO] [stdout]   27:     0x5f8fba904970 - std::rt::lang_start_internal::{{closure}}::h4cbc9430de699e2c
[INFO] [stdout]                                at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/rt.rs:175:24
[INFO] [stdout]   28:     0x5f8fba904970 - std::panicking::catch_unwind::do_call::h5af2f11409a22e3e
[INFO] [stdout]                                at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/panicking.rs:590:40
[INFO] [stdout]   29:     0x5f8fba904970 - std::panicking::catch_unwind::hf64cf7b0d8070f52
[INFO] [stdout]                                at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/panicking.rs:553:19
[INFO] [stdout]   30:     0x5f8fba904970 - std::panic::catch_unwind::h480b74763390cdcf
[INFO] [stdout]                                at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/panic.rs:359:14
[INFO] [stdout]   31:     0x5f8fba904970 - std::rt::lang_start_internal::h4b3d04f698aef094
[INFO] [stdout]                                at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/rt.rs:171:5
[INFO] [stdout]   32:     0x5f8fba8f4531 - std::rt::lang_start::h457230af78cce7e7
[INFO] [stdout]   33:     0x5f8fba8f54d5 - main
[INFO] [stdout]   34:     0x7e304e03e1ca - <unknown>
[INFO] [stdout]   35:     0x7e304e03e28b - __libc_start_main
[INFO] [stdout]   36:     0x5f8fba8f3875 - _start
[INFO] [stdout]   37:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/lib.rs - to_writer (line 98)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 5 passed; 1 failed; 1 ignored; 0 measured; 0 filtered out; finished in 0.15s
[INFO] [stdout] 
[INFO] [stderr] error: doctest failed, to rerun pass `--doc`
[INFO] running `Command { std: "docker" "inspect" "4c1431e9768b703468643313c44c74892220a18be89aeed436b6de535287b53c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4c1431e9768b703468643313c44c74892220a18be89aeed436b6de535287b53c", kill_on_drop: false }`
[INFO] [stdout] 4c1431e9768b703468643313c44c74892220a18be89aeed436b6de535287b53c
