[INFO] fetching crate peek 0.0.0...
[INFO] checking peek-0.0.0 against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] extracting crate peek 0.0.0 into /workspace/builds/worker-1-tc1/source
[INFO] validating manifest of crates.io crate peek 0.0.0 on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate peek 0.0.0
[INFO] finished tweaking crates.io crate peek 0.0.0
[INFO] tweaked toml for crates.io crate peek 0.0.0 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate crates.io crate peek 0.0.0 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded ntapi v0.4.1
[INFO] [stderr]   Downloaded sysinfo v0.29.10
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d4bc15722fd84a8d034f2625c120535a28d72a4505a3d1531fa4e93dd6e52932
[INFO] running `Command { std: "docker" "start" "-a" "d4bc15722fd84a8d034f2625c120535a28d72a4505a3d1531fa4e93dd6e52932", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d4bc15722fd84a8d034f2625c120535a28d72a4505a3d1531fa4e93dd6e52932", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d4bc15722fd84a8d034f2625c120535a28d72a4505a3d1531fa4e93dd6e52932", kill_on_drop: false }`
[INFO] [stdout] d4bc15722fd84a8d034f2625c120535a28d72a4505a3d1531fa4e93dd6e52932
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 64b613b22650fb551bea8bc2b246a2a74b00a10061b4418d233fb27359a14034
[INFO] running `Command { std: "docker" "start" "-a" "64b613b22650fb551bea8bc2b246a2a74b00a10061b4418d233fb27359a14034", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.69
[INFO] [stderr]    Compiling crossbeam-utils v0.8.16
[INFO] [stderr]    Compiling libc v0.2.149
[INFO] [stderr]    Compiling serde v1.0.189
[INFO] [stderr]    Compiling rayon-core v1.12.0
[INFO] [stderr]     Checking anstyle v1.0.4
[INFO] [stderr]     Checking anstyle-query v1.0.0
[INFO] [stderr]    Compiling anyhow v1.0.75
[INFO] [stderr]     Checking clap_lex v0.5.1
[INFO] [stderr]    Compiling memoffset v0.9.0
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.15
[INFO] [stderr]     Checking anstyle-parse v0.2.2
[INFO] [stderr]     Checking either v1.9.0
[INFO] [stderr]     Checking bitflags v2.4.1
[INFO] [stderr]     Checking memchr v2.6.4
[INFO] [stderr]    Compiling serde_json v1.0.107
[INFO] [stderr]     Checking anstream v0.6.4
[INFO] [stderr]     Checking csv-core v0.1.11
[INFO] [stderr]     Checking clap_builder v4.4.6
[INFO] [stderr]    Compiling quote v1.0.33
[INFO] [stderr]    Compiling syn v2.0.38
[INFO] [stderr]     Checking crossbeam-deque v0.8.3
[INFO] [stderr]     Checking rayon v1.8.0
[INFO] [stderr]     Checking nix v0.27.1
[INFO] [stderr]     Checking getrandom v0.2.10
[INFO] [stderr]     Checking ctrlc v3.4.1
[INFO] [stderr]     Checking sysinfo v0.29.10
[INFO] [stderr]    Compiling serde_derive v1.0.189
[INFO] [stderr]    Compiling clap_derive v4.4.2
[INFO] [stderr]     Checking clap v4.4.6
[INFO] [stderr]     Checking csv v1.3.0
[INFO] [stderr]     Checking uuid v1.5.0
[INFO] [stderr]     Checking peek v0.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `data`
[INFO] [stdout]    --> src/main.rs:123:11
[INFO] [stdout]     |
[INFO] [stdout] 123 | fn to_csv(data: Vec<Data>) {
[INFO] [stdout]     |           ^^^^ help: if this is intentional, prefix it with an underscore: `_data`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Output` is never used
[INFO] [stdout]    --> src/main.rs:165:6
[INFO] [stdout]     |
[INFO] [stdout] 165 | enum Output {
[INFO] [stdout]     |      ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `data`
[INFO] [stdout]    --> src/main.rs:123:11
[INFO] [stdout]     |
[INFO] [stdout] 123 | fn to_csv(data: Vec<Data>) {
[INFO] [stdout]     |           ^^^^ help: if this is intentional, prefix it with an underscore: `_data`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Output` is never used
[INFO] [stdout]    --> src/main.rs:165:6
[INFO] [stdout]     |
[INFO] [stdout] 165 | enum Output {
[INFO] [stdout]     |      ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 14.99s
[INFO] running `Command { std: "docker" "inspect" "64b613b22650fb551bea8bc2b246a2a74b00a10061b4418d233fb27359a14034", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "64b613b22650fb551bea8bc2b246a2a74b00a10061b4418d233fb27359a14034", kill_on_drop: false }`
[INFO] [stdout] 64b613b22650fb551bea8bc2b246a2a74b00a10061b4418d233fb27359a14034
[INFO] checking peek-0.0.0 against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] extracting crate peek 0.0.0 into /workspace/builds/worker-1-tc2/source
[INFO] validating manifest of crates.io crate peek 0.0.0 on toolchain 2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate peek 0.0.0
[INFO] finished tweaking crates.io crate peek 0.0.0
[INFO] tweaked toml for crates.io crate peek 0.0.0 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] crate crates.io crate peek 0.0.0 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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e39a75b850c21747fabe7ea2ba58b690eeed8206acb0e7fe016e5288ad09680b
[INFO] running `Command { std: "docker" "start" "-a" "e39a75b850c21747fabe7ea2ba58b690eeed8206acb0e7fe016e5288ad09680b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e39a75b850c21747fabe7ea2ba58b690eeed8206acb0e7fe016e5288ad09680b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e39a75b850c21747fabe7ea2ba58b690eeed8206acb0e7fe016e5288ad09680b", kill_on_drop: false }`
[INFO] [stdout] e39a75b850c21747fabe7ea2ba58b690eeed8206acb0e7fe016e5288ad09680b
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] eabe462f15b4f648a606418087ad920611f8851b9eaa772698be3718134953ab
[INFO] running `Command { std: "docker" "start" "-a" "eabe462f15b4f648a606418087ad920611f8851b9eaa772698be3718134953ab", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.69
[INFO] [stderr]    Compiling crossbeam-utils v0.8.16
[INFO] [stderr]    Compiling libc v0.2.149
[INFO] [stderr]    Compiling serde v1.0.189
[INFO] [stderr]    Compiling rayon-core v1.12.0
[INFO] [stderr]     Checking anstyle v1.0.4
[INFO] [stderr]     Checking anstyle-query v1.0.0
[INFO] [stderr]     Checking bitflags v2.4.1
[INFO] [stderr]     Checking clap_lex v0.5.1
[INFO] [stderr]    Compiling anyhow v1.0.75
[INFO] [stderr]    Compiling memoffset v0.9.0
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.15
[INFO] [stderr]     Checking anstyle-parse v0.2.2
[INFO] [stderr]     Checking memchr v2.6.4
[INFO] [stderr]    Compiling serde_json v1.0.107
[INFO] [stderr]     Checking either v1.9.0
[INFO] [stderr]     Checking anstream v0.6.4
[INFO] [stderr]     Checking csv-core v0.1.11
[INFO] [stderr]     Checking clap_builder v4.4.6
[INFO] [stderr]    Compiling quote v1.0.33
[INFO] [stderr]     Checking crossbeam-deque v0.8.3
[INFO] [stderr]    Compiling syn v2.0.38
[INFO] [stderr]     Checking rayon v1.8.0
[INFO] [stderr]     Checking getrandom v0.2.10
[INFO] [stderr]     Checking nix v0.27.1
[INFO] [stderr]     Checking ctrlc v3.4.1
[INFO] [stderr]     Checking sysinfo v0.29.10
[INFO] [stderr]    Compiling serde_derive v1.0.189
[INFO] [stderr]    Compiling clap_derive v4.4.2
[INFO] [stderr]     Checking clap v4.4.6
[INFO] [stderr]     Checking csv v1.3.0
[INFO] [stderr]     Checking uuid v1.5.0
[INFO] [stderr]     Checking peek v0.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `data`
[INFO] [stdout]    --> src/main.rs:123:11
[INFO] [stdout]     |
[INFO] [stdout] 123 | fn to_csv(data: Vec<Data>) {
[INFO] [stdout]     |           ^^^^ help: if this is intentional, prefix it with an underscore: `_data`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `data`
[INFO] [stdout]    --> src/main.rs:123:11
[INFO] [stdout]     |
[INFO] [stdout] 123 | fn to_csv(data: Vec<Data>) {
[INFO] [stdout]     |           ^^^^ help: if this is intentional, prefix it with an underscore: `_data`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Output` is never used
[INFO] [stdout]    --> src/main.rs:165:6
[INFO] [stdout]     |
[INFO] [stdout] 165 | enum Output {
[INFO] [stdout]     |      ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Output` is never used
[INFO] [stdout]    --> src/main.rs:165:6
[INFO] [stdout]     |
[INFO] [stdout] 165 | enum Output {
[INFO] [stdout]     |      ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 13.58s
[INFO] running `Command { std: "docker" "inspect" "eabe462f15b4f648a606418087ad920611f8851b9eaa772698be3718134953ab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eabe462f15b4f648a606418087ad920611f8851b9eaa772698be3718134953ab", kill_on_drop: false }`
[INFO] [stdout] eabe462f15b4f648a606418087ad920611f8851b9eaa772698be3718134953ab