[INFO] fetching crate write-monitor 0.0.1-alpha.3...
[INFO] testing write-monitor-0.0.1-alpha.3 against 1.83.0 for beta-1.84.0-4-retry
[INFO] extracting crate write-monitor 0.0.1-alpha.3 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate write-monitor 0.0.1-alpha.3 on toolchain 1.83.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.83.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate write-monitor 0.0.1-alpha.3
[INFO] finished tweaking crates.io crate write-monitor 0.0.1-alpha.3
[INFO] tweaked toml for crates.io crate write-monitor 0.0.1-alpha.3 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.83.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 39 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.83.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded adler2 v2.0.0
[INFO] [stderr]   Downloaded futures-executor v0.3.31
[INFO] [stderr]   Downloaded futures-channel v0.3.31
[INFO] [stderr]   Downloaded futures v0.3.31
[INFO] [stderr]   Downloaded futures-core v0.3.31
[INFO] [stderr]   Downloaded backtrace v0.3.74
[INFO] [stderr]   Downloaded pin-project v1.1.7
[INFO] [stderr]   Downloaded miniz_oxide v0.8.0
[INFO] [stderr]   Downloaded pin-utils v0.1.0
[INFO] [stderr]   Downloaded futures-util v0.3.31
[INFO] [stderr]   Downloaded pin-project-internal v1.1.7
[INFO] [stderr]   Downloaded addr2line v0.24.2
[INFO] [stderr]   Downloaded futures-io v0.3.31
[INFO] [stderr]   Downloaded futures-macro v0.3.31
[INFO] [stderr]   Downloaded futures-sink v0.3.31
[INFO] [stderr]   Downloaded gimli v0.31.1
[INFO] [stderr]   Downloaded futures-task v0.3.31
[INFO] [stderr]   Downloaded object v0.36.5
[INFO] [stderr]   Downloaded rustc-demangle v0.1.24
[INFO] [stderr]   Downloaded pin-project-lite v0.2.15
[INFO] [stderr]   Downloaded tokio v1.42.0
[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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+1.83.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c1b906b948caf7b828903027779bd18d5333cadf75c69b9f0b5f74e22e9596e5
[INFO] running `Command { std: "docker" "start" "-a" "c1b906b948caf7b828903027779bd18d5333cadf75c69b9f0b5f74e22e9596e5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c1b906b948caf7b828903027779bd18d5333cadf75c69b9f0b5f74e22e9596e5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c1b906b948caf7b828903027779bd18d5333cadf75c69b9f0b5f74e22e9596e5", kill_on_drop: false }`
[INFO] [stdout] c1b906b948caf7b828903027779bd18d5333cadf75c69b9f0b5f74e22e9596e5
[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=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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+1.83.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4a4e0cdfce5b944318688351d877856f41e230dd21873b9ba643bf7adb0e838c
[INFO] running `Command { std: "docker" "start" "-a" "4a4e0cdfce5b944318688351d877856f41e230dd21873b9ba643bf7adb0e838c", kill_on_drop: false }`
[INFO] [stderr]    Compiling write-monitor v0.0.1-alpha.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.15s
[INFO] running `Command { std: "docker" "inspect" "4a4e0cdfce5b944318688351d877856f41e230dd21873b9ba643bf7adb0e838c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4a4e0cdfce5b944318688351d877856f41e230dd21873b9ba643bf7adb0e838c", kill_on_drop: false }`
[INFO] [stdout] 4a4e0cdfce5b944318688351d877856f41e230dd21873b9ba643bf7adb0e838c
[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=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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+1.83.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e46bc63bf84f9b76fd17d8f6685923e1e9a5cbae4d0d530b08ff04ddf749341c
[INFO] running `Command { std: "docker" "start" "-a" "e46bc63bf84f9b76fd17d8f6685923e1e9a5cbae4d0d530b08ff04ddf749341c", kill_on_drop: false }`
[INFO] [stderr]    Compiling write-monitor v0.0.1-alpha.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.38s
[INFO] running `Command { std: "docker" "inspect" "e46bc63bf84f9b76fd17d8f6685923e1e9a5cbae4d0d530b08ff04ddf749341c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e46bc63bf84f9b76fd17d8f6685923e1e9a5cbae4d0d530b08ff04ddf749341c", kill_on_drop: false }`
[INFO] [stdout] e46bc63bf84f9b76fd17d8f6685923e1e9a5cbae4d0d530b08ff04ddf749341c
[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=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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+1.83.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] f46df005764bda778defa9dbbde62128ec032184a95fe7956cde4fe800bc67b7
[INFO] running `Command { std: "docker" "start" "-a" "f46df005764bda778defa9dbbde62128ec032184a95fe7956cde4fe800bc67b7", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/write_monitor-ea9ede90c31b646d)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests write_monitor
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs - (line 5) ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/lib.rs - (line 5) stdout ----
[INFO] [stdout] Test executable failed (exit status: 101).
[INFO] [stdout] 
[INFO] [stdout] stderr:
[INFO] [stdout] thread 'main' panicked at src/lib.rs:7:49:
[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:     0x5c3d53bc984a - std::backtrace_rs::backtrace::libunwind::trace::h5a5b8284f2d0c266
[INFO] [stdout]                                at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/std/src/../../backtrace/src/backtrace/libunwind.rs:116:5
[INFO] [stdout]    1:     0x5c3d53bc984a - std::backtrace_rs::backtrace::trace_unsynchronized::h76d4f1c9b0b875e3
[INFO] [stdout]                                at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stdout]    2:     0x5c3d53bc984a - std::sys::backtrace::_print_fmt::hc4546b8364a537c6
[INFO] [stdout]                                at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/std/src/sys/backtrace.rs:66:9
[INFO] [stdout]    3:     0x5c3d53bc984a - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::h5b6bd5631a6d1f6b
[INFO] [stdout]                                at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/std/src/sys/backtrace.rs:39:26
[INFO] [stdout]    4:     0x5c3d53be5143 - core::fmt::rt::Argument::fmt::h270f6602a2b96f62
[INFO] [stdout]                                at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/core/src/fmt/rt.rs:177:76
[INFO] [stdout]    5:     0x5c3d53be5143 - core::fmt::write::h7550c97b06c86515
[INFO] [stdout]                                at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/core/src/fmt/mod.rs:1186:21
[INFO] [stdout]    6:     0x5c3d53bc7513 - std::io::Write::write_fmt::h7b09c64fe0be9c84
[INFO] [stdout]                                at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/std/src/io/mod.rs:1839:15
[INFO] [stdout]    7:     0x5c3d53bc9692 - std::sys::backtrace::BacktraceLock::print::h2395ccd2c84ba3aa
[INFO] [stdout]                                at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/std/src/sys/backtrace.rs:42:9
[INFO] [stdout]    8:     0x5c3d53bca63c - std::panicking::default_hook::{{closure}}::he19d4c7230e07961
[INFO] [stdout]                                at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/std/src/panicking.rs:268:22
[INFO] [stdout]    9:     0x5c3d53bca482 - std::panicking::default_hook::hf614597d3c67bbdb
[INFO] [stdout]                                at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/std/src/panicking.rs:295:9
[INFO] [stdout]   10:     0x5c3d53bcac17 - std::panicking::rust_panic_with_hook::h8942133a8b252070
[INFO] [stdout]                                at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/std/src/panicking.rs:801:13
[INFO] [stdout]   11:     0x5c3d53bcaaaa - std::panicking::begin_panic_handler::{{closure}}::hb5f5963570096b29
[INFO] [stdout]                                at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/std/src/panicking.rs:674:13
[INFO] [stdout]   12:     0x5c3d53bc9d29 - std::sys::backtrace::__rust_end_short_backtrace::h6208cedc1922feda
[INFO] [stdout]                                at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/std/src/sys/backtrace.rs:170:18
[INFO] [stdout]   13:     0x5c3d53bca73c - rust_begin_unwind
[INFO] [stdout]                                at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/std/src/panicking.rs:665:5
[INFO] [stdout]   14:     0x5c3d53ba4300 - core::panicking::panic_fmt::h0c3082644d1bf418
[INFO] [stdout]                                at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/core/src/panicking.rs:74:14
[INFO] [stdout]   15:     0x5c3d53ba4676 - core::result::unwrap_failed::hd20b4aa073bda1e2
[INFO] [stdout]                                at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/core/src/result.rs:1700:5
[INFO] [stdout]   16:     0x5c3d53ba93ff - rust_out::main::_doctest_main_src_lib_rs_5_0::h31fdeae92dfdff9b
[INFO] [stdout]   17:     0x5c3d53ba9386 - rust_out::main::h86d391cc11b8a827
[INFO] [stdout]   18:     0x5c3d53ba6e53 - core::ops::function::FnOnce::call_once::hd1e0b33d350e8c2e
[INFO] [stdout]   19:     0x5c3d53ba5986 - std::sys::backtrace::__rust_begin_short_backtrace::hb7c4fd168269da08
[INFO] [stdout]   20:     0x5c3d53ba5839 - std::rt::lang_start::{{closure}}::h7630186e3858a44d
[INFO] [stdout]   21:     0x5c3d53bc446e - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::hfdb85f4ee94732d3
[INFO] [stdout]                                at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/core/src/ops/function.rs:284:13
[INFO] [stdout]   22:     0x5c3d53bc446e - std::panicking::try::do_call::h6e577310f330cbef
[INFO] [stdout]                                at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/std/src/panicking.rs:557:40
[INFO] [stdout]   23:     0x5c3d53bc446e - std::panicking::try::ha588d438267d2645
[INFO] [stdout]                                at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/std/src/panicking.rs:520:19
[INFO] [stdout]   24:     0x5c3d53bc446e - std::panic::catch_unwind::h429fda1e025f26d9
[INFO] [stdout]                                at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/std/src/panic.rs:358:14
[INFO] [stdout]   25:     0x5c3d53bc446e - std::rt::lang_start_internal::{{closure}}::h7b731265e841c4bf
[INFO] [stdout]                                at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/std/src/rt.rs:174:48
[INFO] [stdout]   26:     0x5c3d53bc446e - std::panicking::try::do_call::hc0f6a675b7ae5a36
[INFO] [stdout]                                at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/std/src/panicking.rs:557:40
[INFO] [stdout]   27:     0x5c3d53bc446e - std::panicking::try::h4c93b7ff0671f1ff
[INFO] [stdout]                                at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/std/src/panicking.rs:520:19
[INFO] [stdout]   28:     0x5c3d53bc446e - std::panic::catch_unwind::hcc1e154961d16ce6
[INFO] [stdout]                                at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/std/src/panic.rs:358:14
[INFO] [stdout]   29:     0x5c3d53bc446e - std::rt::lang_start_internal::h1c66660c99c8424c
[INFO] [stdout]                                at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/std/src/rt.rs:174:20
[INFO] [stdout]   30:     0x5c3d53ba5817 - std::rt::lang_start::hcdb31f4834f76b8c
[INFO] [stdout]   31:     0x5c3d53ba9995 - main
[INFO] [stdout]   32:     0x7e468b4c2d90 - <unknown>
[INFO] [stdout]   33:     0x7e468b4c2e40 - __libc_start_main
[INFO] [stdout]   34:     0x5c3d53ba49b5 - _start
[INFO] [stdout]   35:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/lib.rs - (line 5)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 0 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.39s
[INFO] [stdout] 
[INFO] [stderr] error: doctest failed, to rerun pass `--doc`
[INFO] running `Command { std: "docker" "inspect" "f46df005764bda778defa9dbbde62128ec032184a95fe7956cde4fe800bc67b7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f46df005764bda778defa9dbbde62128ec032184a95fe7956cde4fe800bc67b7", kill_on_drop: false }`
[INFO] [stdout] f46df005764bda778defa9dbbde62128ec032184a95fe7956cde4fe800bc67b7
