[INFO] fetching crate csv-scout 0.0.9...
[INFO] checking csv-scout-0.0.9 against try#c659ee110de67e82444e4b6c8407c1a9af9c2cf6 for pr-145608-1
[INFO] extracting crate csv-scout 0.0.9 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate csv-scout 0.0.9
[INFO] removed 0 missing examples
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate csv-scout 0.0.9
[INFO] tweaked toml for crates.io crate csv-scout 0.0.9 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate csv-scout 0.0.9 on toolchain c659ee110de67e82444e4b6c8407c1a9af9c2cf6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate csv-scout 0.0.9 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" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "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-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 598a87a4db03c8667cf4af0707e7d03c5686aa575bcf192ceaa9a49c085aae07
[INFO] running `Command { std: "docker" "start" "-a" "598a87a4db03c8667cf4af0707e7d03c5686aa575bcf192ceaa9a49c085aae07", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "598a87a4db03c8667cf4af0707e7d03c5686aa575bcf192ceaa9a49c085aae07", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "598a87a4db03c8667cf4af0707e7d03c5686aa575bcf192ceaa9a49c085aae07", kill_on_drop: false }`
[INFO] [stdout] 598a87a4db03c8667cf4af0707e7d03c5686aa575bcf192ceaa9a49c085aae07
[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" "-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f7dc0d32f55581c1e386e4cef97464dc83595515ba5db7c40c81422862d3c08c
[INFO] running `Command { std: "docker" "start" "-a" "f7dc0d32f55581c1e386e4cef97464dc83595515ba5db7c40c81422862d3c08c", kill_on_drop: false }`
[INFO] [stderr]     Checking csv-core v0.1.12
[INFO] [stderr]     Checking itertools v0.14.0
[INFO] [stderr]     Checking bytecount v0.6.8
[INFO] [stderr]     Checking hashbrown v0.15.2
[INFO] [stderr]     Checking csv v1.3.1
[INFO] [stderr]     Checking csv-scout v0.0.9 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `STATE_STEADYFLEX` and `STATE_STEADYSTRICT`
[INFO] [stdout]   --> src/sniffer.rs:13:20
[INFO] [stdout]    |
[INFO] [stdout] 13 |     chain::{Chain, STATE_STEADYFLEX, STATE_STEADYSTRICT, STATE_UNSTEADY, ViterbiResults},
[INFO] [stdout]    |                    ^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `STATE_STEADYFLEX` and `STATE_STEADYSTRICT`
[INFO] [stdout]   --> src/sniffer.rs:13:20
[INFO] [stdout]    |
[INFO] [stdout] 13 |     chain::{Chain, STATE_STEADYFLEX, STATE_STEADYSTRICT, STATE_UNSTEADY, ViterbiResults},
[INFO] [stdout]    |                    ^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `infer_preamble_known_delim` is never used
[INFO] [stdout]    --> src/sniffer.rs:233:8
[INFO] [stdout]     |
[INFO] [stdout]  53 | impl Sniffer {
[INFO] [stdout]     | ------------ method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 233 |     fn infer_preamble_known_delim<R: Read + Seek>(&mut self, reader: &mut R) -> Result<()> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/sample.rs:17:42
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub fn take_sample_from_start<R>(reader: &mut R, sample_size: SampleSize) -> Result<SampleIter<R>>
[INFO] [stdout]    |                                          ^^^^^^ the lifetime is elided here         ------------- the same lifetime is hidden here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub fn take_sample_from_start<R>(reader: &mut R, sample_size: SampleSize) -> Result<SampleIter<'_, R>>
[INFO] [stdout]    |                                                                                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `infer_preamble_known_delim` is never used
[INFO] [stdout]    --> src/sniffer.rs:233:8
[INFO] [stdout]     |
[INFO] [stdout]  53 | impl Sniffer {
[INFO] [stdout]     | ------------ method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 233 |     fn infer_preamble_known_delim<R: Read + Seek>(&mut self, reader: &mut R) -> Result<()> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/sample.rs:17:42
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub fn take_sample_from_start<R>(reader: &mut R, sample_size: SampleSize) -> Result<SampleIter<R>>
[INFO] [stdout]    |                                          ^^^^^^ the lifetime is elided here         ------------- the same lifetime is hidden here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub fn take_sample_from_start<R>(reader: &mut R, sample_size: SampleSize) -> Result<SampleIter<'_, R>>
[INFO] [stdout]    |                                                                                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `csv_core as csvc`
[INFO] [stdout]  --> tests/quote.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use csv_core as csvc;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.66s
[INFO] running `Command { std: "docker" "inspect" "f7dc0d32f55581c1e386e4cef97464dc83595515ba5db7c40c81422862d3c08c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f7dc0d32f55581c1e386e4cef97464dc83595515ba5db7c40c81422862d3c08c", kill_on_drop: false }`
[INFO] [stdout] f7dc0d32f55581c1e386e4cef97464dc83595515ba5db7c40c81422862d3c08c