[INFO] cloning repository https://github.com/BaronVonDrew/IncrementalJsonWriter
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/BaronVonDrew/IncrementalJsonWriter" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBaronVonDrew%2FIncrementalJsonWriter", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBaronVonDrew%2FIncrementalJsonWriter'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 33491bbf085df81fe86a9adefd29e246ba37c30d
[INFO] checking BaronVonDrew/IncrementalJsonWriter against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBaronVonDrew%2FIncrementalJsonWriter" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/BaronVonDrew/IncrementalJsonWriter 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 git repo https://github.com/BaronVonDrew/IncrementalJsonWriter
[INFO] finished tweaking git repo https://github.com/BaronVonDrew/IncrementalJsonWriter
[INFO] tweaked toml for git repo https://github.com/BaronVonDrew/IncrementalJsonWriter written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/BaronVonDrew/IncrementalJsonWriter 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]  Downloading crates ...
[INFO] [stderr]   Downloaded serde v1.0.115
[INFO] [stderr]   Downloaded serde_derive v1.0.115
[INFO] [stderr]   Downloaded clap v4.4.7
[INFO] [stderr]   Downloaded clap_builder v4.4.7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 3b7a9bca3628237a02a875025dd2e7154b52715f3c82ca3a1c61e766acf48d0c
[INFO] running `Command { std: "docker" "start" "-a" "3b7a9bca3628237a02a875025dd2e7154b52715f3c82ca3a1c61e766acf48d0c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3b7a9bca3628237a02a875025dd2e7154b52715f3c82ca3a1c61e766acf48d0c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3b7a9bca3628237a02a875025dd2e7154b52715f3c82ca3a1c61e766acf48d0c", kill_on_drop: false }`
[INFO] [stdout] 3b7a9bca3628237a02a875025dd2e7154b52715f3c82ca3a1c61e766acf48d0c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 037a932e7fee7142d9552fde41863faf2764e5b77197e9f57f8d60fcf929e1bb
[INFO] running `Command { std: "docker" "start" "-a" "037a932e7fee7142d9552fde41863faf2764e5b77197e9f57f8d60fcf929e1bb", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.36
[INFO] [stderr]    Compiling syn v1.0.92
[INFO] [stderr]    Compiling serde_derive v1.0.115
[INFO] [stderr]    Compiling serde v1.0.115
[INFO] [stderr]    Compiling libc v0.2.149
[INFO] [stderr]    Compiling serde_json v1.0.57
[INFO] [stderr]     Checking itoa v0.4.6
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling rustix v0.38.21
[INFO] [stderr]     Checking linux-raw-sys v0.4.10
[INFO] [stderr]     Checking bitflags v2.4.1
[INFO] [stderr]     Checking ciborium-io v0.2.1
[INFO] [stderr]     Checking ciborium-ll v0.2.1
[INFO] [stderr]     Checking clap_builder v4.4.7
[INFO] [stderr]     Checking criterion-plot v0.5.0
[INFO] [stderr]     Checking anes v0.1.6
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]     Checking plotters v0.3.1
[INFO] [stderr]     Checking is-terminal v0.4.9
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stderr]     Checking rayon-core v1.9.2
[INFO] [stderr]     Checking clap v4.4.7
[INFO] [stderr]     Checking rayon v1.5.2
[INFO] [stderr]     Checking ciborium v0.2.1
[INFO] [stderr]     Checking tinytemplate v1.2.1
[INFO] [stderr]     Checking incremental-writer v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking criterion v0.5.1
[INFO] [stdout] warning: unused import: `black_box`
[INFO] [stdout]  --> benches/my_benchmark.rs:1:17
[INFO] [stdout]   |
[INFO] [stdout] 1 | use criterion::{black_box, criterion_group, criterion_main, Criterion};
[INFO] [stdout]   |                 ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ops::Range`
[INFO] [stdout]  --> benches/my_benchmark.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::ops::Range;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 24.28s
[INFO] running `Command { std: "docker" "inspect" "037a932e7fee7142d9552fde41863faf2764e5b77197e9f57f8d60fcf929e1bb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "037a932e7fee7142d9552fde41863faf2764e5b77197e9f57f8d60fcf929e1bb", kill_on_drop: false }`
[INFO] [stdout] 037a932e7fee7142d9552fde41863faf2764e5b77197e9f57f8d60fcf929e1bb
[INFO] checking BaronVonDrew/IncrementalJsonWriter against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBaronVonDrew%2FIncrementalJsonWriter" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/BaronVonDrew/IncrementalJsonWriter 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 git repo https://github.com/BaronVonDrew/IncrementalJsonWriter
[INFO] finished tweaking git repo https://github.com/BaronVonDrew/IncrementalJsonWriter
[INFO] tweaked toml for git repo https://github.com/BaronVonDrew/IncrementalJsonWriter written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/BaronVonDrew/IncrementalJsonWriter 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-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ad3813f88b3964a1a66a0f82f5aa0a298a3d840d9bf74baa3bd8e9aa55eff3bb
[INFO] running `Command { std: "docker" "start" "-a" "ad3813f88b3964a1a66a0f82f5aa0a298a3d840d9bf74baa3bd8e9aa55eff3bb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ad3813f88b3964a1a66a0f82f5aa0a298a3d840d9bf74baa3bd8e9aa55eff3bb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ad3813f88b3964a1a66a0f82f5aa0a298a3d840d9bf74baa3bd8e9aa55eff3bb", kill_on_drop: false }`
[INFO] [stdout] ad3813f88b3964a1a66a0f82f5aa0a298a3d840d9bf74baa3bd8e9aa55eff3bb
[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=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] 50080f55a570bd7423c191d71ab0425691b65e78147b3ef8787a215a4e9df3fe
[INFO] running `Command { std: "docker" "start" "-a" "50080f55a570bd7423c191d71ab0425691b65e78147b3ef8787a215a4e9df3fe", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.36
[INFO] [stderr]    Compiling syn v1.0.92
[INFO] [stderr]    Compiling serde_derive v1.0.115
[INFO] [stderr]    Compiling serde v1.0.115
[INFO] [stderr]    Compiling libc v0.2.149
[INFO] [stderr]    Compiling serde_json v1.0.57
[INFO] [stderr]     Checking itoa v0.4.6
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling rustix v0.38.21
[INFO] [stderr]     Checking bitflags v2.4.1
[INFO] [stderr]     Checking ciborium-io v0.2.1
[INFO] [stderr]     Checking linux-raw-sys v0.4.10
[INFO] [stderr]     Checking ciborium-ll v0.2.1
[INFO] [stderr]     Checking clap_builder v4.4.7
[INFO] [stderr]     Checking criterion-plot v0.5.0
[INFO] [stderr]     Checking anes v0.1.6
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]     Checking is-terminal v0.4.9
[INFO] [stderr]     Checking plotters v0.3.1
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stderr]     Checking clap v4.4.7
[INFO] [stderr]     Checking rayon-core v1.9.2
[INFO] [stderr]     Checking rayon v1.5.2
[INFO] [stderr]     Checking ciborium v0.2.1
[INFO] [stderr]     Checking tinytemplate v1.2.1
[INFO] [stderr]     Checking incremental-writer v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking criterion v0.5.1
[INFO] [stdout] warning: unused import: `black_box`
[INFO] [stdout]  --> benches/my_benchmark.rs:1:17
[INFO] [stdout]   |
[INFO] [stdout] 1 | use criterion::{black_box, criterion_group, criterion_main, Criterion};
[INFO] [stdout]   |                 ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ops::Range`
[INFO] [stdout]  --> benches/my_benchmark.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::ops::Range;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 24.54s
[INFO] running `Command { std: "docker" "inspect" "50080f55a570bd7423c191d71ab0425691b65e78147b3ef8787a215a4e9df3fe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "50080f55a570bd7423c191d71ab0425691b65e78147b3ef8787a215a4e9df3fe", kill_on_drop: false }`
[INFO] [stdout] 50080f55a570bd7423c191d71ab0425691b65e78147b3ef8787a215a4e9df3fe