[INFO] fetching crate binext 1.0.0...
[INFO] checking binext-1.0.0 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate binext 1.0.0 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate binext 1.0.0 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 binext 1.0.0
[INFO] finished tweaking crates.io crate binext 1.0.0
[INFO] tweaked toml for crates.io crate binext 1.0.0 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 72 packages
[INFO] [stderr]       Adding anes v0.1.6 (latest: v0.2.0)
[INFO] [stderr]       Adding bitflags v1.3.2 (latest: v2.5.0)
[INFO] [stderr]       Adding clap v3.2.25 (latest: v4.5.4)
[INFO] [stderr]       Adding clap_lex v0.2.4 (latest: v0.7.0)
[INFO] [stderr]       Adding criterion v0.4.0 (latest: v0.5.1)
[INFO] [stderr]       Adding hashbrown v0.12.3 (latest: v0.14.3)
[INFO] [stderr]       Adding hermit-abi v0.1.19 (latest: v0.3.9)
[INFO] [stderr]       Adding indexmap v1.9.3 (latest: v2.2.6)
[INFO] [stderr]       Adding itertools v0.10.5 (latest: v0.12.1)
[INFO] [stderr]       Adding os_str_bytes v6.6.1 (latest: v7.0.0)
[INFO] [stderr]       Adding wasi v0.11.0+wasi-snapshot-preview1 (latest: v0.13.0+wasi-0.2.0)
[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 os_str_bytes v6.6.1
[INFO] [stderr]   Downloaded clap_lex v0.2.4
[INFO] [stderr]   Downloaded textwrap v0.16.1
[INFO] [stderr]   Downloaded criterion v0.4.0
[INFO] [stderr]   Downloaded clap v3.2.25
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 3dc729e182b2242875b61c4a2ec3c42a7800e8d5dc0d0d71a81ec5a8b17e2e49
[INFO] running `Command { std: "docker" "start" "-a" "3dc729e182b2242875b61c4a2ec3c42a7800e8d5dc0d0d71a81ec5a8b17e2e49", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3dc729e182b2242875b61c4a2ec3c42a7800e8d5dc0d0d71a81ec5a8b17e2e49", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3dc729e182b2242875b61c4a2ec3c42a7800e8d5dc0d0d71a81ec5a8b17e2e49", kill_on_drop: false }`
[INFO] [stdout] 3dc729e182b2242875b61c4a2ec3c42a7800e8d5dc0d0d71a81ec5a8b17e2e49
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 936fe866383d98dda5c8c00155f0df5524182bce96eca0ea1e6dd48ba117122f
[INFO] running `Command { std: "docker" "start" "-a" "936fe866383d98dda5c8c00155f0df5524182bce96eca0ea1e6dd48ba117122f", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.79
[INFO] [stderr]    Compiling libc v0.2.153
[INFO] [stderr]    Compiling crossbeam-utils v0.8.19
[INFO] [stderr]    Compiling rayon-core v1.12.1
[INFO] [stderr]    Compiling indexmap v1.9.3
[INFO] [stderr]     Checking either v1.10.0
[INFO] [stderr]     Checking half v2.4.0
[INFO] [stderr]     Checking os_str_bytes v6.6.1
[INFO] [stderr]     Checking ciborium-io v0.2.2
[INFO] [stderr]     Checking hashbrown v0.12.3
[INFO] [stderr]     Checking plotters-backend v0.3.5
[INFO] [stderr]     Checking regex-automata v0.4.6
[INFO] [stderr]     Checking clap_lex v0.2.4
[INFO] [stderr]     Checking ciborium-ll v0.2.2
[INFO] [stderr]     Checking itertools v0.10.5
[INFO] [stderr]     Checking cast v0.3.0
[INFO] [stderr]     Checking plotters-svg v0.3.5
[INFO] [stderr]     Checking textwrap v0.16.1
[INFO] [stderr]     Checking same-file v1.0.6
[INFO] [stderr]     Checking walkdir v2.5.0
[INFO] [stderr]     Checking plotters v0.3.5
[INFO] [stderr]    Compiling quote v1.0.35
[INFO] [stderr]    Compiling syn v2.0.58
[INFO] [stderr]     Checking crossbeam-epoch v0.9.18
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking oorandom v11.1.3
[INFO] [stderr]     Checking anes v0.1.6
[INFO] [stderr]     Checking clap v3.2.25
[INFO] [stderr]     Checking getrandom v0.2.12
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking crossbeam-deque v0.8.5
[INFO] [stderr]     Checking binext v1.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking regex v1.10.4
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking rayon v1.10.0
[INFO] [stderr]     Checking criterion-plot v0.5.0
[INFO] [stderr]    Compiling serde_derive v1.0.197
[INFO] [stderr]     Checking serde v1.0.197
[INFO] [stderr]     Checking serde_json v1.0.115
[INFO] [stderr]     Checking ciborium v0.2.2
[INFO] [stderr]     Checking tinytemplate v1.2.1
[INFO] [stderr]     Checking criterion v0.4.0
[INFO] [stdout] warning: unused imports: `Read`, `Write`
[INFO] [stdout]  --> benches/benchmarks/single_buffer.rs:1:23
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::io::{Cursor, Read, Write};
[INFO] [stdout]   |                       ^^^^  ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `black_box`
[INFO] [stdout]  --> benches/benchmarks/single_buffer.rs:2:26
[INFO] [stdout]   |
[INFO] [stdout] 2 | use criterion::{Bencher, black_box, Criterion, criterion_group};
[INFO] [stdout]   |                          ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rand::Rng`
[INFO] [stdout]  --> benches/benchmarks/single_buffer.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use rand::Rng;
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `buffer` is never read
[INFO] [stdout]  --> benches/benchmarks/single_buffer.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | struct Buf8192 {
[INFO] [stdout]   |        ------- field in this struct
[INFO] [stdout] 8 |     buffer: [char; 8192]
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `buffer` is never read
[INFO] [stdout]   --> benches/benchmarks/single_buffer.rs:30:5
[INFO] [stdout]    |
[INFO] [stdout] 29 | struct Buf65535 {
[INFO] [stdout]    |        -------- field in this struct
[INFO] [stdout] 30 |     buffer: [char; 65535]
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 26.82s
[INFO] running `Command { std: "docker" "inspect" "936fe866383d98dda5c8c00155f0df5524182bce96eca0ea1e6dd48ba117122f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "936fe866383d98dda5c8c00155f0df5524182bce96eca0ea1e6dd48ba117122f", kill_on_drop: false }`
[INFO] [stdout] 936fe866383d98dda5c8c00155f0df5524182bce96eca0ea1e6dd48ba117122f