[INFO] cloning repository https://github.com/sunlightboy/sqlite_like_db
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/sunlightboy/sqlite_like_db" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsunlightboy%2Fsqlite_like_db", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsunlightboy%2Fsqlite_like_db'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 04cea8bebd6cf00dc0c59b9e60dc01ffa694c2a8
[INFO] checking sunlightboy/sqlite_like_db against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsunlightboy%2Fsqlite_like_db" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/sunlightboy/sqlite_like_db 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/sunlightboy/sqlite_like_db
[INFO] finished tweaking git repo https://github.com/sunlightboy/sqlite_like_db
[INFO] tweaked toml for git repo https://github.com/sunlightboy/sqlite_like_db written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/sunlightboy/sqlite_like_db 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 bytes v0.4.11
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 5ef12f1a629013685bd287f09edd8ad537b80eee67625e3951f36ae294b8291d
[INFO] running `Command { std: "docker" "start" "-a" "5ef12f1a629013685bd287f09edd8ad537b80eee67625e3951f36ae294b8291d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5ef12f1a629013685bd287f09edd8ad537b80eee67625e3951f36ae294b8291d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5ef12f1a629013685bd287f09edd8ad537b80eee67625e3951f36ae294b8291d", kill_on_drop: false }`
[INFO] [stdout] 5ef12f1a629013685bd287f09edd8ad537b80eee67625e3951f36ae294b8291d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 8bed73ae2c55aee141dfd946f7e88ea2d3e2ddfc5512baf9bb71b633f18ca4a2
[INFO] running `Command { std: "docker" "start" "-a" "8bed73ae2c55aee141dfd946f7e88ea2d3e2ddfc5512baf9bb71b633f18ca4a2", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.50
[INFO] [stderr]    Compiling byteorder v1.3.1
[INFO] [stderr]    Compiling serde v1.0.89
[INFO] [stderr]     Checking iovec v0.1.2
[INFO] [stderr]     Checking bytes v0.4.11
[INFO] [stderr]     Checking lhyDB v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]   --> tests/db_test.rs:37:22
[INFO] [stdout]    |
[INFO] [stdout] 37 |             for i in (1..=91){
[INFO] [stdout]    |                      ^      ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 37 -             for i in (1..=91){
[INFO] [stdout] 37 +             for i in 1..=91 {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> tests/db_test.rs:14:17
[INFO] [stdout]    |
[INFO] [stdout] 14 |             let mut stdin = child.stdin.as_mut().expect("Failed to open stdin");
[INFO] [stdout]    |                 ----^^^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> tests/db_test.rs:36:17
[INFO] [stdout]    |
[INFO] [stdout] 36 |             let mut stdin = child.stdin.as_mut().expect("Failed to open stdin");
[INFO] [stdout]    |                 ----^^^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> tests/db_test.rs:38:21
[INFO] [stdout]    |
[INFO] [stdout] 38 |                 let mut str1 = format!("insert {} user{} person{}@example.com\n", i, i, i);
[INFO] [stdout]    |                     ----^^^^
[INFO] [stdout]    |                     |
[INFO] [stdout]    |                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> tests/db_test.rs:45:13
[INFO] [stdout]    |
[INFO] [stdout] 45 |         let mut outstr = &mut output.stdout.rsplit(|b|*b==b'\n').into_iter().take(2).skip(1);
[INFO] [stdout]    |             ----^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.63s
[INFO] running `Command { std: "docker" "inspect" "8bed73ae2c55aee141dfd946f7e88ea2d3e2ddfc5512baf9bb71b633f18ca4a2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8bed73ae2c55aee141dfd946f7e88ea2d3e2ddfc5512baf9bb71b633f18ca4a2", kill_on_drop: false }`
[INFO] [stdout] 8bed73ae2c55aee141dfd946f7e88ea2d3e2ddfc5512baf9bb71b633f18ca4a2