[INFO] fetching crate expman 0.3.3...
[INFO] testing expman-0.3.3 against beta-2026-03-05 for beta-1.95-1
[INFO] extracting crate expman 0.3.3 into /workspace/builds/worker-1-tc2/source
[INFO] started tweaking crates.io crate expman 0.3.3
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate expman 0.3.3
[INFO] tweaked toml for crates.io crate expman 0.3.3 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate expman 0.3.3 on toolchain beta-2026-03-05
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-03-05" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate expman 0.3.3 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-2026-03-05" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-03-05" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2da95f7f71233a01554196493d3d1fa44cca044a3344eef59ef3938bf7ffb2df
[INFO] running `Command { std: "docker" "start" "-a" "2da95f7f71233a01554196493d3d1fa44cca044a3344eef59ef3938bf7ffb2df", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2da95f7f71233a01554196493d3d1fa44cca044a3344eef59ef3938bf7ffb2df", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2da95f7f71233a01554196493d3d1fa44cca044a3344eef59ef3938bf7ffb2df", kill_on_drop: false }`
[INFO] [stdout] 2da95f7f71233a01554196493d3d1fa44cca044a3344eef59ef3938bf7ffb2df
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-03-05" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2357db68f7c2d5f073155d391cb59355d13ed2dbf549ed105166a0c8f8397f22
[INFO] running `Command { std: "docker" "start" "-a" "2357db68f7c2d5f073155d391cb59355d13ed2dbf549ed105166a0c8f8397f22", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.182
[INFO] [stderr]    Compiling serde_core v1.0.228
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling zerocopy v0.8.40
[INFO] [stderr]    Compiling syn v2.0.117
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[INFO] [stderr]    Compiling arrow-schema v58.0.0
[INFO] [stderr]    Compiling lexical-util v1.0.7
[INFO] [stderr]    Compiling regex-syntax v0.8.10
[INFO] [stderr]    Compiling semver v1.0.27
[INFO] [stderr]    Compiling rustc_version v0.4.1
[INFO] [stderr]    Compiling lexical-write-integer v1.0.6
[INFO] [stderr]    Compiling lexical-parse-integer v1.0.6
[INFO] [stderr]    Compiling lexical-write-float v1.0.6
[INFO] [stderr]    Compiling lexical-parse-float v1.0.6
[INFO] [stderr]    Compiling num-integer v0.1.46
[INFO] [stderr]    Compiling num-complex v0.4.6
[INFO] [stderr]    Compiling num-bigint v0.4.6
[INFO] [stderr]    Compiling getrandom v0.3.4
[INFO] [stderr]    Compiling jobserver v0.1.34
[INFO] [stderr]    Compiling flatbuffers v25.12.19
[INFO] [stderr]    Compiling lexical-core v1.0.6
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[INFO] [stderr]    Compiling ordered-float v2.10.1
[INFO] [stderr]    Compiling twox-hash v2.1.2
[INFO] [stderr]    Compiling zlib-rs v0.6.3
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[INFO] [stderr]    Compiling time-core v0.1.8
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[INFO] [stderr]    Compiling regex v1.12.3
[INFO] [stderr]    Compiling tracing-attributes v0.1.31
[INFO] [stderr]    Compiling matchers v0.2.0
[INFO] [stderr]    Compiling thiserror-impl v2.0.18
[INFO] [stderr]    Compiling tracing v0.1.44
[INFO] [stderr]    Compiling tokio-macros v2.6.1
[INFO] [stderr]    Compiling parking_lot v0.12.5
[INFO] [stderr]    Compiling thiserror v2.0.18
[INFO] [stderr]    Compiling flate2 v1.1.9
[INFO] [stderr]    Compiling crossbeam-channel v0.5.15
[INFO] [stderr]    Compiling getrandom v0.4.2
[INFO] [stderr]    Compiling socket2 v0.6.2
[INFO] [stderr]    Compiling mio v1.1.1
[INFO] [stderr]    Compiling seq-macro v0.3.6
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling uuid v1.21.0
[INFO] [stderr]    Compiling tokio v1.50.0
[INFO] [stderr]    Compiling chrono v0.4.44
[INFO] [stderr]    Compiling tracing-serde v0.2.0
[INFO] [stderr]    Compiling tracing-subscriber v0.3.22
[INFO] [stderr]    Compiling serde_yaml v0.9.34+deprecated
[INFO] [stderr]    Compiling zstd v0.13.3
[INFO] [stderr]    Compiling tracing-appender v0.2.4
[INFO] [stderr]    Compiling half v2.7.1
[INFO] [stderr]    Compiling arrow-buffer v58.0.0
[INFO] [stderr]    Compiling arrow-data v58.0.0
[INFO] [stderr]    Compiling arrow-array v58.0.0
[INFO] [stderr]    Compiling arrow-select v58.0.0
[INFO] [stderr]    Compiling arrow-row v58.0.0
[INFO] [stderr]    Compiling arrow-arith v58.0.0
[INFO] [stderr]    Compiling arrow-ord v58.0.0
[INFO] [stderr]    Compiling arrow-ipc v58.0.0
[INFO] [stderr]    Compiling arrow-string v58.0.0
[INFO] [stderr]    Compiling parquet v58.0.0
[INFO] [stderr]    Compiling arrow-cast v58.0.0
[INFO] [stderr]    Compiling arrow-json v58.0.0
[INFO] [stderr]    Compiling arrow-csv v58.0.0
[INFO] [stderr]    Compiling arrow v58.0.0
[INFO] [stderr]    Compiling expman v0.3.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3m 06s
[INFO] running `Command { std: "docker" "inspect" "2357db68f7c2d5f073155d391cb59355d13ed2dbf549ed105166a0c8f8397f22", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2357db68f7c2d5f073155d391cb59355d13ed2dbf549ed105166a0c8f8397f22", kill_on_drop: false }`
[INFO] [stdout] 2357db68f7c2d5f073155d391cb59355d13ed2dbf549ed105166a0c8f8397f22
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-03-05" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b24a1f3714fdd4dbfbf081cbba531d69a3be6e3cbf7bfdc05c3adc9fc1fe7776
[INFO] running `Command { std: "docker" "start" "-a" "b24a1f3714fdd4dbfbf081cbba531d69a3be6e3cbf7bfdc05c3adc9fc1fe7776", kill_on_drop: false }`
[INFO] [stderr]    Compiling flatbuffers v25.12.19
[INFO] [stderr]    Compiling rustix v1.1.4
[INFO] [stderr]    Compiling linux-raw-sys v0.12.1
[INFO] [stderr]    Compiling tokio v1.50.0
[INFO] [stderr]    Compiling arrow-ipc v58.0.0
[INFO] [stderr]    Compiling parquet v58.0.0
[INFO] [stderr]    Compiling arrow v58.0.0
[INFO] [stderr]    Compiling tempfile v3.26.0
[INFO] [stderr]    Compiling expman v0.3.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 42.65s
[INFO] running `Command { std: "docker" "inspect" "b24a1f3714fdd4dbfbf081cbba531d69a3be6e3cbf7bfdc05c3adc9fc1fe7776", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b24a1f3714fdd4dbfbf081cbba531d69a3be6e3cbf7bfdc05c3adc9fc1fe7776", kill_on_drop: false }`
[INFO] [stdout] b24a1f3714fdd4dbfbf081cbba531d69a3be6e3cbf7bfdc05c3adc9fc1fe7776
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-03-05" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 3ddd957b9b2b4110a46c742020870c81ac7f2fcb512a45187330eddcbfbbdca4
[INFO] running `Command { std: "docker" "start" "-a" "3ddd957b9b2b4110a46c742020870c81ac7f2fcb512a45187330eddcbfbbdca4", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.27s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/expman-27fcb5a72a3f6a60)
[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]      Running tests/integration_test.rs (/opt/rustwide/target/debug/deps/integration_test-3ab09339179cd783)
[INFO] [stdout] 
[INFO] [stdout] running 12 tests
[INFO] [stdout] test test_corrupt_yaml_metadata ... ok
[INFO] [stdout] test test_log_vector_replaces_step ... ok
[INFO] [stdout] test test_engine_creates_run_dir ... ok
[INFO] [stdout] test test_log_params_writes_yaml ... ok
[INFO] [stdout] test test_run_status_written_on_close ... ok
[INFO] [stdout] test test_save_artifact_relative_path ... ok
[INFO] [stdout] test test_save_artifact_absolute_path ... ok
[INFO] [stdout] test test_log_vector_writes_parquet ... ok
[INFO] [stdout] test test_parquet_schema_merge ... ok
[INFO] [stdout] test test_read_latest_scalar_metrics ... ok
[INFO] [stdout] test test_concurrent_metrics_logging ... ok
[INFO] [stdout] test test_log_vector_is_fast ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 12 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 39.77s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests expman
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs - (line 20) ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/lib.rs - (line 20) stdout ----
[INFO] [stdout] Test executable failed (exit status: 1).
[INFO] [stdout] 
[INFO] [stdout] stderr:
[INFO] [stdout] Error: I/O error: Read-only file system (os error 30)
[INFO] [stdout] 
[INFO] [stdout] Caused by:
[INFO] [stdout]     Read-only file system (os error 30)
[INFO] [stdout] 
[INFO] [stdout] Stack backtrace:
[INFO] [stdout]    0: anyhow::error::<impl core::convert::From<E> for anyhow::Error>::from
[INFO] [stdout]    1: <core::result::Result<T,F> as core::ops::try_trait::FromResidual<core::result::Result<core::convert::Infallible,E>>>::from_residual
[INFO] [stdout]    2: rust_out::main
[INFO] [stdout]    3: core::ops::function::FnOnce::call_once
[INFO] [stdout]    4: std::sys::backtrace::__rust_begin_short_backtrace
[INFO] [stdout]    5: std::rt::lang_start::{{closure}}
[INFO] [stdout]    6: <&dyn core::ops::function::Fn<(), Output = i32> + core::panic::unwind_safe::RefUnwindSafe + core::marker::Sync as core::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]              at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:287:21
[INFO] [stdout]    7: std::panicking::catch_unwind::do_call::<&dyn core::ops::function::Fn<(), Output = i32> + core::panic::unwind_safe::RefUnwindSafe + core::marker::Sync, i32>
[INFO] [stdout]              at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:581:40
[INFO] [stdout]    8: std::panicking::catch_unwind::<i32, &dyn core::ops::function::Fn<(), Output = i32> + core::panic::unwind_safe::RefUnwindSafe + core::marker::Sync>
[INFO] [stdout]              at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:544:19
[INFO] [stdout]    9: std::panic::catch_unwind::<&dyn core::ops::function::Fn<(), Output = i32> + core::panic::unwind_safe::RefUnwindSafe + core::marker::Sync, i32>
[INFO] [stdout]              at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panic.rs:359:14
[INFO] [stdout]   10: std::rt::lang_start_internal::{closure#0}
[INFO] [stdout]              at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/rt.rs:175:24
[INFO] [stdout]   11: std::panicking::catch_unwind::do_call::<std::rt::lang_start_internal::{closure#0}, isize>
[INFO] [stdout]              at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:581:40
[INFO] [stdout]   12: std::panicking::catch_unwind::<isize, std::rt::lang_start_internal::{closure#0}>
[INFO] [stdout]              at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:544:19
[INFO] [stdout]   13: std::panic::catch_unwind::<std::rt::lang_start_internal::{closure#0}, isize>
[INFO] [stdout]              at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panic.rs:359:14
[INFO] [stdout]   14: std::rt::lang_start_internal
[INFO] [stdout]              at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/rt.rs:171:5
[INFO] [stdout]   15: std::rt::lang_start
[INFO] [stdout]   16: main
[INFO] [stdout]   17: <unknown>
[INFO] [stdout]   18: __libc_start_main
[INFO] [stdout]   19: _start
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/lib.rs - (line 20)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 0 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 3.09s
[INFO] [stdout] 
[INFO] [stderr] error: doctest failed, to rerun pass `--doc`
[INFO] running `Command { std: "docker" "inspect" "3ddd957b9b2b4110a46c742020870c81ac7f2fcb512a45187330eddcbfbbdca4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3ddd957b9b2b4110a46c742020870c81ac7f2fcb512a45187330eddcbfbbdca4", kill_on_drop: false }`
[INFO] [stdout] 3ddd957b9b2b4110a46c742020870c81ac7f2fcb512a45187330eddcbfbbdca4
