[INFO] fetching crate expman-core 0.2.2...
[INFO] testing expman-core-0.2.2 against try#dec9417b8611e34e787a3e4c37686b5131f9e5c5 for pr-154210-1
[INFO] extracting crate expman-core 0.2.2 into /workspace/builds/worker-1-tc2/source
[INFO] started tweaking crates.io crate expman-core 0.2.2
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate expman-core 0.2.2
[INFO] tweaked toml for crates.io crate expman-core 0.2.2 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate expman-core 0.2.2 on toolchain dec9417b8611e34e787a3e4c37686b5131f9e5c5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate expman-core 0.2.2 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" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2cc6d52a9fd9bc8afaed2630b9a0010fc00944684e3671ae294275f19b3505ea
[INFO] running `Command { std: "docker" "start" "-a" "2cc6d52a9fd9bc8afaed2630b9a0010fc00944684e3671ae294275f19b3505ea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2cc6d52a9fd9bc8afaed2630b9a0010fc00944684e3671ae294275f19b3505ea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2cc6d52a9fd9bc8afaed2630b9a0010fc00944684e3671ae294275f19b3505ea", kill_on_drop: false }`
[INFO] [stdout] 2cc6d52a9fd9bc8afaed2630b9a0010fc00944684e3671ae294275f19b3505ea
[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=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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 21bc0549e7366e268bcb5638e486e8e119d6ef35692940fb538f88d15dfceb11
[INFO] running `Command { std: "docker" "start" "-a" "21bc0549e7366e268bcb5638e486e8e119d6ef35692940fb538f88d15dfceb11", kill_on_drop: false }`
[INFO] [stderr]    Compiling quote v1.0.44
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[INFO] [stderr]    Compiling smallvec v1.15.1
[INFO] [stderr]    Compiling rustc_version v0.4.1
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[INFO] [stderr]    Compiling syn v2.0.117
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[INFO] [stderr]    Compiling brotli v7.0.0
[INFO] [stderr]    Compiling flate2 v1.1.9
[INFO] [stderr]    Compiling parking_lot v0.12.5
[INFO] [stderr]    Compiling signal-hook-registry v1.4.8
[INFO] [stderr]    Compiling socket2 v0.6.2
[INFO] [stderr]    Compiling mio v1.1.1
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[INFO] [stderr]    Compiling unsafe-libyaml v0.2.11
[INFO] [stderr]    Compiling seq-macro v0.3.6
[INFO] [stderr]    Compiling zstd-sys v2.0.13+zstd.1.5.6
[INFO] [stderr]    Compiling serde_json v1.0.149
[INFO] [stderr]    Compiling csv v1.4.0
[INFO] [stderr]    Compiling time v0.3.47
[INFO] [stderr]    Compiling uuid v1.21.0
[INFO] [stderr]    Compiling num-rational v0.4.2
[INFO] [stderr]    Compiling num v0.4.3
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]    Compiling zerocopy-derive v0.8.40
[INFO] [stderr]    Compiling tracing-attributes v0.1.31
[INFO] [stderr]    Compiling thiserror-impl v2.0.18
[INFO] [stderr]    Compiling thiserror-impl v1.0.69
[INFO] [stderr]    Compiling tokio-macros v2.6.0
[INFO] [stderr]    Compiling tokio v1.49.0
[INFO] [stderr]    Compiling thiserror v2.0.18
[INFO] [stderr]    Compiling regex v1.12.3
[INFO] [stderr]    Compiling matchers v0.2.0
[INFO] [stderr]    Compiling tracing v0.1.44
[INFO] [stderr]    Compiling thiserror v1.0.69
[INFO] [stderr]    Compiling zstd v0.13.3
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling chrono v0.4.39
[INFO] [stderr]    Compiling tracing-serde v0.2.0
[INFO] [stderr]    Compiling serde_yaml v0.9.34+deprecated
[INFO] [stderr]    Compiling tracing-subscriber v0.3.22
[INFO] [stderr]    Compiling tracing-appender v0.2.4
[INFO] [stderr]    Compiling half v2.7.1
[INFO] [stderr]    Compiling arrow-buffer v53.4.1
[INFO] [stderr]    Compiling arrow-data v53.4.1
[INFO] [stderr]    Compiling arrow-array v53.4.1
[INFO] [stderr]    Compiling arrow-select v53.4.1
[INFO] [stderr]    Compiling arrow-row v53.4.1
[INFO] [stderr]    Compiling arrow-arith v53.4.1
[INFO] [stderr]    Compiling arrow-cast v53.4.1
[INFO] [stderr]    Compiling arrow-string v53.4.1
[INFO] [stderr]    Compiling arrow-ord v53.4.1
[INFO] [stderr]    Compiling arrow-ipc v53.4.1
[INFO] [stderr]    Compiling arrow-json v53.4.1
[INFO] [stderr]    Compiling arrow-csv v53.4.1
[INFO] [stderr]    Compiling parquet v53.4.1
[INFO] [stderr]    Compiling arrow v53.4.1
[INFO] [stderr]    Compiling expman-core v0.2.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1m 36s
[INFO] running `Command { std: "docker" "inspect" "21bc0549e7366e268bcb5638e486e8e119d6ef35692940fb538f88d15dfceb11", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "21bc0549e7366e268bcb5638e486e8e119d6ef35692940fb538f88d15dfceb11", kill_on_drop: false }`
[INFO] [stdout] 21bc0549e7366e268bcb5638e486e8e119d6ef35692940fb538f88d15dfceb11
[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=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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fdddfd96b09c807934dfc4b6d201d0d3c8be1f1797dc097224eba20c5d530618
[INFO] running `Command { std: "docker" "start" "-a" "fdddfd96b09c807934dfc4b6d201d0d3c8be1f1797dc097224eba20c5d530618", kill_on_drop: false }`
[INFO] [stderr]    Compiling rustix v1.1.4
[INFO] [stderr]    Compiling linux-raw-sys v0.12.1
[INFO] [stderr]    Compiling bitflags v2.11.0
[INFO] [stderr]    Compiling tokio v1.49.0
[INFO] [stderr]    Compiling fastrand v2.3.0
[INFO] [stderr]    Compiling tempfile v3.26.0
[INFO] [stderr]    Compiling expman-core v0.2.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 13.36s
[INFO] running `Command { std: "docker" "inspect" "fdddfd96b09c807934dfc4b6d201d0d3c8be1f1797dc097224eba20c5d530618", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fdddfd96b09c807934dfc4b6d201d0d3c8be1f1797dc097224eba20c5d530618", kill_on_drop: false }`
[INFO] [stdout] fdddfd96b09c807934dfc4b6d201d0d3c8be1f1797dc097224eba20c5d530618
[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=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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 594979502aa93f0f2e3093f84189cec8272bd88eaed77572889763752a91c245
[INFO] running `Command { std: "docker" "start" "-a" "594979502aa93f0f2e3093f84189cec8272bd88eaed77572889763752a91c245", 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_core-6093b6fc9b9304ce)
[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-efbd2faf4965eb4f)
[INFO] [stdout] 
[INFO] [stdout] running 8 tests
[INFO] [stdout] test test_log_params_writes_yaml ... ok
[INFO] [stdout] test test_parquet_schema_merge ... ok
[INFO] [stdout] test test_engine_creates_run_dir ... ok
[INFO] [stdout] test test_run_status_written_on_close ... ok
[INFO] [stdout] test test_log_metrics_writes_parquet ... ok
[INFO] [stdout] test test_read_latest_scalar_metrics ... ok
[INFO] [stdout] test test_save_artifact_relative_path ... ok
[INFO] [stderr]    Doc-tests expman_core
[INFO] [stdout] test test_log_metrics_is_fast ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 8 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 37.52s
[INFO] [stdout] 
[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 as core::convert::From<expman_core::error::ExpmanError>>::from
[INFO] [stdout]    1: <core::result::Result<(), anyhow::Error> as core::ops::try_trait::FromResidual<core::result::Result<core::convert::Infallible, expman_core::error::ExpmanError>>>::from_residual
[INFO] [stdout]    2: rust_out::main
[INFO] [stdout]    3: <fn() -> core::result::Result<(), anyhow::Error> as core::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]    4: std::sys::backtrace::__rust_begin_short_backtrace::<fn() -> core::result::Result<(), anyhow::Error>, core::result::Result<(), anyhow::Error>>
[INFO] [stdout]    5: std::rt::lang_start::<core::result::Result<(), anyhow::Error>>::{closure#0}
[INFO] [stdout]    6: <&dyn core::ops::function::Fn<(), Output = i32> + core::marker::Sync + core::panic::unwind_safe::RefUnwindSafe as core::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]              at /rustc/dec9417b8611e34e787a3e4c37686b5131f9e5c5/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::marker::Sync + core::panic::unwind_safe::RefUnwindSafe, i32>
[INFO] [stdout]              at /rustc/dec9417b8611e34e787a3e4c37686b5131f9e5c5/library/std/src/panicking.rs:581:40
[INFO] [stdout]    8: std::panicking::catch_unwind::<i32, &dyn core::ops::function::Fn<(), Output = i32> + core::marker::Sync + core::panic::unwind_safe::RefUnwindSafe>
[INFO] [stdout]              at /rustc/dec9417b8611e34e787a3e4c37686b5131f9e5c5/library/std/src/panicking.rs:544:19
[INFO] [stdout]    9: std::panic::catch_unwind::<&dyn core::ops::function::Fn<(), Output = i32> + core::marker::Sync + core::panic::unwind_safe::RefUnwindSafe, i32>
[INFO] [stdout]              at /rustc/dec9417b8611e34e787a3e4c37686b5131f9e5c5/library/std/src/panic.rs:359:14
[INFO] [stdout]   10: std::rt::lang_start_internal::{closure#0}
[INFO] [stdout]              at /rustc/dec9417b8611e34e787a3e4c37686b5131f9e5c5/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/dec9417b8611e34e787a3e4c37686b5131f9e5c5/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/dec9417b8611e34e787a3e4c37686b5131f9e5c5/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/dec9417b8611e34e787a3e4c37686b5131f9e5c5/library/std/src/panic.rs:359:14
[INFO] [stdout]   14: std::rt::lang_start_internal
[INFO] [stdout]              at /rustc/dec9417b8611e34e787a3e4c37686b5131f9e5c5/library/std/src/rt.rs:171:5
[INFO] [stdout]   15: std::rt::lang_start::<core::result::Result<(), anyhow::Error>>
[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 2.17s
[INFO] [stdout] 
[INFO] [stderr] error: doctest failed, to rerun pass `--doc`
[INFO] running `Command { std: "docker" "inspect" "594979502aa93f0f2e3093f84189cec8272bd88eaed77572889763752a91c245", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "594979502aa93f0f2e3093f84189cec8272bd88eaed77572889763752a91c245", kill_on_drop: false }`
[INFO] [stdout] 594979502aa93f0f2e3093f84189cec8272bd88eaed77572889763752a91c245