[INFO] fetching crate mind-tree-term 0.2.1...
[INFO] testing mind-tree-term-0.2.1 against beta-2025-10-28 for beta-1.92-2
[INFO] extracting crate mind-tree-term 0.2.1 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate mind-tree-term 0.2.1
[INFO] finished tweaking crates.io crate mind-tree-term 0.2.1
[INFO] tweaked toml for crates.io crate mind-tree-term 0.2.1 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate mind-tree-term 0.2.1 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 mind-tree-term 0.2.1 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-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 98b742c6f901fd9d2b47b0bd9baa33ad00fb617273b7d41ca060484c717475fe
[INFO] running `Command { std: "docker" "start" "-a" "98b742c6f901fd9d2b47b0bd9baa33ad00fb617273b7d41ca060484c717475fe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "98b742c6f901fd9d2b47b0bd9baa33ad00fb617273b7d41ca060484c717475fe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "98b742c6f901fd9d2b47b0bd9baa33ad00fb617273b7d41ca060484c717475fe", kill_on_drop: false }`
[INFO] [stdout] 98b742c6f901fd9d2b47b0bd9baa33ad00fb617273b7d41ca060484c717475fe
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 9640a862510b17da69217bb01607a5ba86370a695742061606ca004a92228f06
[INFO] running `Command { std: "docker" "start" "-a" "9640a862510b17da69217bb01607a5ba86370a695742061606ca004a92228f06", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.54
[INFO] [stderr]    Compiling libc v0.2.140
[INFO] [stderr]    Compiling serde_derive v1.0.159
[INFO] [stderr]    Compiling serde v1.0.159
[INFO] [stderr]    Compiling io-lifetimes v1.0.9
[INFO] [stderr]    Compiling rustix v0.36.11
[INFO] [stderr]    Compiling utf8parse v0.2.1
[INFO] [stderr]    Compiling concolor-override v1.0.0
[INFO] [stderr]    Compiling concolor-query v0.3.3
[INFO] [stderr]    Compiling anstyle v0.3.5
[INFO] [stderr]    Compiling quote v1.0.26
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling clap_lex v0.4.1
[INFO] [stderr]    Compiling indexmap v1.9.3
[INFO] [stderr]    Compiling winnow v0.4.1
[INFO] [stderr]    Compiling pathdiff v0.2.1
[INFO] [stderr]    Compiling anstyle-parse v0.1.1
[INFO] [stderr]    Compiling iana-time-zone v0.1.54
[INFO] [stderr]    Compiling open v4.0.1
[INFO] [stderr]    Compiling syn v2.0.11
[INFO] [stderr]    Compiling dirs-sys v0.4.0
[INFO] [stderr]    Compiling time v0.1.45
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling colored v2.0.0
[INFO] [stderr]    Compiling dirs v5.0.0
[INFO] [stderr]    Compiling chrono v0.4.24
[INFO] [stderr]    Compiling is-terminal v0.4.5
[INFO] [stderr]    Compiling anstream v0.2.6
[INFO] [stderr]    Compiling clap_builder v4.2.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.40
[INFO] [stderr]    Compiling clap_derive v4.2.0
[INFO] [stderr]    Compiling thiserror v1.0.40
[INFO] [stderr]    Compiling clap v4.2.0
[INFO] [stderr]    Compiling toml_datetime v0.6.1
[INFO] [stderr]    Compiling serde_spanned v0.6.1
[INFO] [stderr]    Compiling serde_json v1.0.95
[INFO] [stderr]    Compiling mind-tree v0.1.1
[INFO] [stderr]    Compiling toml_edit v0.19.8
[INFO] [stderr]    Compiling toml v0.7.3
[INFO] [stderr]    Compiling mind-tree-term v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `err` is never read
[INFO] [stdout]   --> src/config.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 |     err: std::io::Error,
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `err` is never read
[INFO] [stdout]   --> src/config.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 23 |     err: toml::de::Error,
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 24.34s
[INFO] running `Command { std: "docker" "inspect" "9640a862510b17da69217bb01607a5ba86370a695742061606ca004a92228f06", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9640a862510b17da69217bb01607a5ba86370a695742061606ca004a92228f06", kill_on_drop: false }`
[INFO] [stdout] 9640a862510b17da69217bb01607a5ba86370a695742061606ca004a92228f06
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] b2595b30246e929f07028e7160a8848fccc6a67e56d5d9f7a3462ade7aab9d45
[INFO] running `Command { std: "docker" "start" "-a" "b2595b30246e929f07028e7160a8848fccc6a67e56d5d9f7a3462ade7aab9d45", kill_on_drop: false }`
[INFO] [stderr]    Compiling mind-tree-term v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `err` is never read
[INFO] [stdout]   --> src/config.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 |     err: std::io::Error,
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `err` is never read
[INFO] [stdout]   --> src/config.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 23 |     err: toml::de::Error,
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.97s
[INFO] running `Command { std: "docker" "inspect" "b2595b30246e929f07028e7160a8848fccc6a67e56d5d9f7a3462ade7aab9d45", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b2595b30246e929f07028e7160a8848fccc6a67e56d5d9f7a3462ade7aab9d45", kill_on_drop: false }`
[INFO] [stdout] b2595b30246e929f07028e7160a8848fccc6a67e56d5d9f7a3462ade7aab9d45
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 760748fdf1612a4b7e08073abba9ce964abea13fc52af3f16dc968e71a9d8f13
[INFO] running `Command { std: "docker" "start" "-a" "760748fdf1612a4b7e08073abba9ce964abea13fc52af3f16dc968e71a9d8f13", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr] warning: value assigned to `err` is never read
[INFO] [stdout] running 0 tests
[INFO] [stderr]   --> src/config.rs:16:5
[INFO] [stdout] 
[INFO] [stderr]    |
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr] 16 |     err: std::io::Error,
[INFO] [stdout] 
[INFO] [stderr]    |     ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `err` is never read
[INFO] [stderr]   --> src/config.rs:23:5
[INFO] [stderr]    |
[INFO] [stderr] 23 |     err: toml::de::Error,
[INFO] [stderr]    |     ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: `mind-tree-term` (bin "mind" test) generated 2 warnings
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.12s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/mind-a5f5d9e12f026eac)
[INFO] running `Command { std: "docker" "inspect" "760748fdf1612a4b7e08073abba9ce964abea13fc52af3f16dc968e71a9d8f13", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "760748fdf1612a4b7e08073abba9ce964abea13fc52af3f16dc968e71a9d8f13", kill_on_drop: false }`
[INFO] [stdout] 760748fdf1612a4b7e08073abba9ce964abea13fc52af3f16dc968e71a9d8f13