[INFO] cloning repository https://github.com/abbychau/usize-kv
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/abbychau/usize-kv" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fabbychau%2Fusize-kv", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fabbychau%2Fusize-kv'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5eef668c32fc77893dce88851e1c38f1a4db3080
[INFO] checking abbychau/usize-kv against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fabbychau%2Fusize-kv" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/abbychau/usize-kv 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/abbychau/usize-kv
[INFO] finished tweaking git repo https://github.com/abbychau/usize-kv
[INFO] tweaked toml for git repo https://github.com/abbychau/usize-kv written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/abbychau/usize-kv 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 rustversion v1.0.9
[INFO] [stderr]   Downloaded plotters-svg v0.3.2
[INFO] [stderr]   Downloaded crossbeam-queue v0.3.6
[INFO] [stderr]   Downloaded generator v0.7.1
[INFO] [stderr]   Downloaded may_queue v0.1.8
[INFO] [stderr]   Downloaded serde_derive v1.0.142
[INFO] [stderr]   Downloaded plotters v0.3.2
[INFO] [stderr]   Downloaded windows_x86_64_msvc v0.28.0
[INFO] [stderr]   Downloaded evmap v8.0.1
[INFO] [stderr]   Downloaded windows_aarch64_msvc v0.28.0
[INFO] [stderr]   Downloaded windows_i686_gnu v0.28.0
[INFO] [stderr]   Downloaded windows_i686_msvc v0.28.0
[INFO] [stderr]   Downloaded windows_x86_64_gnu v0.28.0
[INFO] [stderr]   Downloaded miow v0.4.0
[INFO] [stderr]   Downloaded may v0.3.22
[INFO] [stderr]   Downloaded windows-sys v0.28.0
[INFO] [stderr]   Downloaded windows v0.32.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 6c1152583d0b7ffdfa1dfedf4444f959d12dc55e0b2f04119bd45ed53f035a7b
[INFO] running `Command { std: "docker" "start" "-a" "6c1152583d0b7ffdfa1dfedf4444f959d12dc55e0b2f04119bd45ed53f035a7b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6c1152583d0b7ffdfa1dfedf4444f959d12dc55e0b2f04119bd45ed53f035a7b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6c1152583d0b7ffdfa1dfedf4444f959d12dc55e0b2f04119bd45ed53f035a7b", kill_on_drop: false }`
[INFO] [stdout] 6c1152583d0b7ffdfa1dfedf4444f959d12dc55e0b2f04119bd45ed53f035a7b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 9960597b0e83c57683aa23f622f67f1419b055ebdeddaa9385be0a42a3d960a4
[INFO] running `Command { std: "docker" "start" "-a" "9960597b0e83c57683aa23f622f67f1419b055ebdeddaa9385be0a42a3d960a4", kill_on_drop: false }`
[INFO] [stderr]    Compiling rustversion v1.0.9
[INFO] [stderr]     Checking once_cell v1.13.0
[INFO] [stderr]    Compiling libc v0.2.127
[INFO] [stderr]    Compiling serde v1.0.142
[INFO] [stderr]    Compiling crossbeam-queue v0.3.6
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]     Checking either v1.7.0
[INFO] [stderr]    Compiling syn v1.0.99
[INFO] [stderr]    Compiling serde_json v1.0.83
[INFO] [stderr]     Checking crossbeam-utils v0.8.11
[INFO] [stderr]    Compiling serde_derive v1.0.142
[INFO] [stderr]     Checking plotters-backend v0.3.4
[INFO] [stderr]     Checking regex-automata v0.1.10
[INFO] [stderr]     Checking crossbeam-epoch v0.9.10
[INFO] [stderr]     Checking crossbeam-channel v0.5.6
[INFO] [stderr]     Checking plotters-svg v0.3.2
[INFO] [stderr]     Checking csv-core v0.1.10
[INFO] [stderr]     Checking itertools v0.10.3
[INFO] [stderr]     Checking crossbeam-deque v0.8.2
[INFO] [stderr]     Checking regex-syntax v0.6.27
[INFO] [stderr]     Checking crossbeam v0.8.2
[INFO] [stderr]     Checking cast v0.3.0
[INFO] [stderr]     Checking clap v2.34.0
[INFO] [stderr]     Checking plotters v0.3.2
[INFO] [stderr]    Compiling may_queue v0.1.8
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stderr]    Compiling generator v0.7.1
[INFO] [stderr]    Compiling may v0.3.22
[INFO] [stderr]     Checking rayon-core v1.9.3
[INFO] [stderr]     Checking socket2 v0.4.4
[INFO] [stderr]     Checking nix v0.24.2
[INFO] [stderr]     Checking regex v1.6.0
[INFO] [stderr]     Checking rayon v1.5.3
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking evmap v8.0.1
[INFO] [stderr]     Checking criterion-plot v0.4.5
[INFO] [stderr]     Checking getopts v0.2.21
[INFO] [stderr]     Checking oorandom v11.1.3
[INFO] [stderr]     Checking bstr v0.2.17
[INFO] [stderr]     Checking serde_cbor v0.11.2
[INFO] [stderr]     Checking csv v1.1.6
[INFO] [stderr]     Checking tinytemplate v1.2.1
[INFO] [stderr]     Checking usize-kv v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `evmap` is imported redundantly
[INFO] [stdout]  --> src/types.rs:1:13
[INFO] [stdout]   |
[INFO] [stdout] 1 | use evmap::{self, ReadHandle, WriteHandle};
[INFO] [stdout]   |             ^^^^ the item `evmap` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking criterion v0.3.6
[INFO] [stdout] warning: unused import: `std::str::from_utf8`
[INFO] [stdout]  --> benches/benchmark1.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use std::str::from_utf8;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `evmap` is imported redundantly
[INFO] [stdout]  --> src/types.rs:1:13
[INFO] [stdout]   |
[INFO] [stdout] 1 | use evmap::{self, ReadHandle, WriteHandle};
[INFO] [stdout]   |             ^^^^ the item `evmap` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]   --> benches/benchmark1.rs:28:25
[INFO] [stdout]    |
[INFO] [stdout] 28 |                     Err(e) => {
[INFO] [stdout]    |                         ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]   --> benches/benchmark1.rs:11:10
[INFO] [stdout]    |
[INFO] [stdout] 11 | fn test1(n: u64) {
[INFO] [stdout]    |          ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 37.51s
[INFO] running `Command { std: "docker" "inspect" "9960597b0e83c57683aa23f622f67f1419b055ebdeddaa9385be0a42a3d960a4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9960597b0e83c57683aa23f622f67f1419b055ebdeddaa9385be0a42a3d960a4", kill_on_drop: false }`
[INFO] [stdout] 9960597b0e83c57683aa23f622f67f1419b055ebdeddaa9385be0a42a3d960a4