[INFO] fetching crate arrow-schema 57.0.0...
[INFO] checking arrow-schema-57.0.0 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate arrow-schema 57.0.0 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate arrow-schema 57.0.0
[INFO] finished tweaking crates.io crate arrow-schema 57.0.0
[INFO] tweaked toml for crates.io crate arrow-schema 57.0.0 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate arrow-schema 57.0.0 on toolchain 4f260f0f20b3133d20cfb50353c0221943af5796
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate arrow-schema 57.0.0 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" "+4f260f0f20b3133d20cfb50353c0221943af5796" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 05e90020698bcba3b4e02197f44f4b663fb15a7b735c681543dca2ea26f1cf1f
[INFO] running `Command { std: "docker" "start" "-a" "05e90020698bcba3b4e02197f44f4b663fb15a7b735c681543dca2ea26f1cf1f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "05e90020698bcba3b4e02197f44f4b663fb15a7b735c681543dca2ea26f1cf1f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "05e90020698bcba3b4e02197f44f4b663fb15a7b735c681543dca2ea26f1cf1f", kill_on_drop: false }`
[INFO] [stdout] 05e90020698bcba3b4e02197f44f4b663fb15a7b735c681543dca2ea26f1cf1f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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 -Dunmustuse_in_always_ok" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 279cdc1a5de4aa2fe671720e42a5866f9561d54cfa8f1162dfef1d440a58b358
[INFO] running `Command { std: "docker" "start" "-a" "279cdc1a5de4aa2fe671720e42a5866f9561d54cfa8f1162dfef1d440a58b358", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.102
[INFO] [stderr]    Compiling unicode-ident v1.0.20
[INFO] [stderr]    Compiling quote v1.0.41
[INFO] [stderr]     Checking clap_lex v0.7.6
[INFO] [stderr]     Checking anstyle v1.0.13
[INFO] [stderr]     Checking regex-syntax v0.8.8
[INFO] [stderr]     Checking ciborium-io v0.2.2
[INFO] [stderr]     Checking itertools v0.10.5
[INFO] [stderr]     Checking cast v0.3.0
[INFO] [stderr]     Checking anes v0.1.6
[INFO] [stderr]     Checking console v0.15.11
[INFO] [stderr]     Checking is-terminal v0.4.16
[INFO] [stderr]     Checking oorandom v11.1.5
[INFO] [stderr]     Checking arrow-schema v57.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking clap_builder v4.5.50
[INFO] [stderr]     Checking insta v1.43.2
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]    --> src/datatype_parse.rs:579:27
[INFO] [stdout]     |
[INFO] [stdout] 579 |         let val: String = self.word.parse().map_err(|err| {
[INFO] [stdout]     |                           ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `arrow-schema` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "279cdc1a5de4aa2fe671720e42a5866f9561d54cfa8f1162dfef1d440a58b358", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "279cdc1a5de4aa2fe671720e42a5866f9561d54cfa8f1162dfef1d440a58b358", kill_on_drop: false }`
[INFO] [stdout] 279cdc1a5de4aa2fe671720e42a5866f9561d54cfa8f1162dfef1d440a58b358