[INFO] fetching crate positional 0.4.5...
[INFO] checking positional-0.4.5 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate positional 0.4.5 into /workspace/builds/worker-1-tc2/source
[INFO] started tweaking crates.io crate positional 0.4.5
[INFO] removed 0 missing examples
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate positional 0.4.5
[INFO] tweaked toml for crates.io crate positional 0.4.5 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate positional 0.4.5 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 positional 0.4.5 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] [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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 59a40472df6beffd98c17bd379c7af34416d72d4aa709bc459383230a8b81f91
[INFO] running `Command { std: "docker" "start" "-a" "59a40472df6beffd98c17bd379c7af34416d72d4aa709bc459383230a8b81f91", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "59a40472df6beffd98c17bd379c7af34416d72d4aa709bc459383230a8b81f91", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "59a40472df6beffd98c17bd379c7af34416d72d4aa709bc459383230a8b81f91", kill_on_drop: false }`
[INFO] [stdout] 59a40472df6beffd98c17bd379c7af34416d72d4aa709bc459383230a8b81f91
[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 -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] 7f96a99df91923e2d61c1a6a14ddcfb12ccc0e05ad617016886f7f277d5cfe2e
[INFO] running `Command { std: "docker" "start" "-a" "7f96a99df91923e2d61c1a6a14ddcfb12ccc0e05ad617016886f7f277d5cfe2e", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.101
[INFO] [stderr]    Compiling quote v1.0.41
[INFO] [stderr]    Compiling libc v0.2.176
[INFO] [stderr]    Compiling winnow v0.7.13
[INFO] [stderr]    Compiling toml_writer v1.0.3
[INFO] [stderr]    Compiling target-triple v0.1.4
[INFO] [stderr]     Checking half v2.6.0
[INFO] [stderr]    Compiling toml_datetime v0.7.2
[INFO] [stderr]    Compiling serde_spanned v1.0.2
[INFO] [stderr]    Compiling serde_json v1.0.145
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]     Checking unicode-ident v1.0.19
[INFO] [stderr]     Checking clap_builder v4.5.48
[INFO] [stderr]     Checking regex-automata v0.4.11
[INFO] [stderr]     Checking criterion-plot v0.6.0
[INFO] [stderr]     Checking pad v0.1.6
[INFO] [stderr]     Checking ciborium-ll v0.2.2
[INFO] [stderr]    Compiling syn v2.0.106
[INFO] [stderr]    Compiling proc-macro-error-attr2 v2.0.0
[INFO] [stderr]     Checking getrandom v0.3.3
[INFO] [stderr]     Checking rand_core v0.9.3
[INFO] [stderr]     Checking rand_chacha v0.9.0
[INFO] [stderr]     Checking clap v4.5.48
[INFO] [stderr]    Compiling toml_parser v1.0.3
[INFO] [stderr]     Checking rand v0.9.2
[INFO] [stderr]     Checking regex v1.11.3
[INFO] [stderr]    Compiling toml v0.9.7
[INFO] [stderr]    Compiling darling_core v0.20.11
[INFO] [stderr]    Compiling proc-macro-error2 v2.0.1
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]    Compiling thiserror-impl v2.0.17
[INFO] [stderr]     Checking thiserror v2.0.17
[INFO] [stderr]    Compiling darling_macro v0.20.11
[INFO] [stderr]    Compiling darling v0.20.11
[INFO] [stderr]    Compiling dummy v0.11.0
[INFO] [stderr]     Checking fake v4.4.0
[INFO] [stderr]    Compiling trybuild v1.0.111
[INFO] [stderr]     Checking ciborium v0.2.2
[INFO] [stderr]     Checking tinytemplate v1.2.1
[INFO] [stderr]     Checking criterion v0.7.0
[INFO] [stderr]    Compiling positional_derive v0.4.5
[INFO] [stderr]     Checking positional v0.4.5 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]  --> tests/optional_field.rs:3:10
[INFO] [stdout]   |
[INFO] [stdout] 3 | #[derive(FromPositionalRow, ToPositionalRow, PartialEq, Debug)]
[INFO] [stdout]   |          ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout]   = note: this error originates in the derive macro `FromPositionalRow` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]  --> examples/write.rs:5:27
[INFO] [stdout]   |
[INFO] [stdout] 5 | #[derive(ToPositionalRow, FromPositionalRow, Dummy, Debug)]
[INFO] [stdout]   |                           ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout]   = note: this error originates in the derive macro `FromPositionalRow` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `positional` (test "optional_field") due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]  --> examples/enum.rs:5:28
[INFO] [stdout]   |
[INFO] [stdout] 5 | #[derive(Debug, PartialEq, FromPositionalRow, ToPositionalRow)]
[INFO] [stdout]   |                            ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout]   = note: this error originates in the derive macro `FromPositionalRow` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> examples/enum.rs:11:28
[INFO] [stdout]    |
[INFO] [stdout] 11 | #[derive(Debug, PartialEq, FromPositionalRow, ToPositionalRow)]
[INFO] [stdout]    |                            ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this error originates in the derive macro `FromPositionalRow` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> examples/enum.rs:17:28
[INFO] [stdout]    |
[INFO] [stdout] 17 | #[derive(Debug, PartialEq, FromPositionalRow, ToPositionalRow)]
[INFO] [stdout]    |                            ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this error originates in the derive macro `FromPositionalRow` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> examples/enum.rs:23:28
[INFO] [stdout]    |
[INFO] [stdout] 23 | #[derive(Debug, PartialEq, FromPositionalRow, ToPositionalRow)]
[INFO] [stdout]    |                            ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this error originates in the derive macro `FromPositionalRow` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `positional` (example "enum") due to 4 previous errors
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]  --> benches/write_to_file.rs:8:27
[INFO] [stdout]   |
[INFO] [stdout] 8 | #[derive(ToPositionalRow, FromPositionalRow, Dummy, Debug)]
[INFO] [stdout]   |                           ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout]   = note: this error originates in the derive macro `FromPositionalRow` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `positional` (example "write") due to 1 previous error
[INFO] [stderr] error: could not compile `positional` (bench "write_to_file") due to 1 previous error
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]  --> benches/enum.rs:6:10
[INFO] [stdout]   |
[INFO] [stdout] 6 | #[derive(FromPositionalRow, ToPositionalRow, Debug)]
[INFO] [stdout]   |          ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout]   = note: this error originates in the derive macro `FromPositionalRow` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> benches/enum.rs:33:10
[INFO] [stdout]    |
[INFO] [stdout] 33 | #[derive(FromPositionalRow, ToPositionalRow, Debug)]
[INFO] [stdout]    |          ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this error originates in the derive macro `FromPositionalRow` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `positional` (bench "enum") due to 2 previous errors
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]  --> tests/name_clashes.rs:9:41
[INFO] [stdout]   |
[INFO] [stdout] 9 | #[derive(::positional::ToPositionalRow, ::positional::FromPositionalRow, PartialEq, Debug)]
[INFO] [stdout]   |                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout]   = note: this error originates in the derive macro `::positional::FromPositionalRow` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> tests/name_clashes.rs:41:28
[INFO] [stdout]    |
[INFO] [stdout] 41 | #[derive(Debug, PartialEq, ::positional::FromPositionalRow, ::positional::ToPositionalRow)]
[INFO] [stdout]    |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this error originates in the derive macro `::positional::FromPositionalRow` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> tests/name_clashes.rs:47:28
[INFO] [stdout]    |
[INFO] [stdout] 47 | #[derive(Debug, PartialEq, ::positional::FromPositionalRow, ::positional::ToPositionalRow)]
[INFO] [stdout]    |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this error originates in the derive macro `::positional::FromPositionalRow` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `positional` (test "name_clashes") due to 3 previous errors
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]  --> tests/parse_row.rs:3:27
[INFO] [stdout]   |
[INFO] [stdout] 3 | #[derive(ToPositionalRow, FromPositionalRow, PartialEq, Debug)]
[INFO] [stdout]   |                           ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout]   = note: this error originates in the derive macro `FromPositionalRow` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `positional` (test "parse_row") due to 1 previous error
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]  --> benches/serde.rs:7:27
[INFO] [stdout]   |
[INFO] [stdout] 7 | #[derive(ToPositionalRow, FromPositionalRow, Dummy, Debug)]
[INFO] [stdout]   |                           ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout]   = note: this error originates in the derive macro `FromPositionalRow` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `positional` (bench "serde") due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "7f96a99df91923e2d61c1a6a14ddcfb12ccc0e05ad617016886f7f277d5cfe2e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7f96a99df91923e2d61c1a6a14ddcfb12ccc0e05ad617016886f7f277d5cfe2e", kill_on_drop: false }`
[INFO] [stdout] 7f96a99df91923e2d61c1a6a14ddcfb12ccc0e05ad617016886f7f277d5cfe2e