[INFO] cloning repository https://github.com/SichangHe/remykarem--apriori
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/SichangHe/remykarem--apriori" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSichangHe%2Fremykarem--apriori", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSichangHe%2Fremykarem--apriori'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5b5db10211e5a94a37936fea7e3e0122d7131ce5
[INFO] checking SichangHe/remykarem--apriori against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSichangHe%2Fremykarem--apriori" "/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/SichangHe/remykarem--apriori 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/SichangHe/remykarem--apriori
[INFO] finished tweaking git repo https://github.com/SichangHe/remykarem--apriori
[INFO] tweaked toml for git repo https://github.com/SichangHe/remykarem--apriori written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/SichangHe/remykarem--apriori 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] 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] 16394288e530f3e8dd23e3aef009a28a3f66e77eddd81508f399b732ff0301e8
[INFO] running `Command { std: "docker" "start" "-a" "16394288e530f3e8dd23e3aef009a28a3f66e77eddd81508f399b732ff0301e8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "16394288e530f3e8dd23e3aef009a28a3f66e77eddd81508f399b732ff0301e8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "16394288e530f3e8dd23e3aef009a28a3f66e77eddd81508f399b732ff0301e8", kill_on_drop: false }`
[INFO] [stdout] 16394288e530f3e8dd23e3aef009a28a3f66e77eddd81508f399b732ff0301e8
[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] 39bc9736485c6f3ee994c91366addd60a930de97d2e0d09b37fc57a57fea326e
[INFO] running `Command { std: "docker" "start" "-a" "39bc9736485c6f3ee994c91366addd60a930de97d2e0d09b37fc57a57fea326e", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.78
[INFO] [stderr]    Compiling radium v0.7.0
[INFO] [stderr]    Compiling rayon-core v1.12.1
[INFO] [stderr]     Checking tap v1.0.1
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]    Compiling serde v1.0.196
[INFO] [stderr]     Checking funty v2.0.0
[INFO] [stderr]     Checking maplit v1.0.2
[INFO] [stderr]     Checking wyz v0.5.1
[INFO] [stderr]     Checking itertools v0.12.0
[INFO] [stderr]     Checking rayon v1.8.1
[INFO] [stderr]     Checking bitvec v1.0.1
[INFO] [stderr]    Compiling quote v1.0.35
[INFO] [stderr]    Compiling syn v2.0.48
[INFO] [stderr]    Compiling serde_derive v1.0.196
[INFO] [stderr]     Checking apriori v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `FrequentItemsets` is imported redundantly
[INFO] [stdout]   --> src/rules/search.rs:66:9
[INFO] [stdout]    |
[INFO] [stdout] 63 |     use super::*;
[INFO] [stdout]    |         -------- the item `FrequentItemsets` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 66 |     use crate::types::FrequentItemsets;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[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]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 15.72s
[INFO] running `Command { std: "docker" "inspect" "39bc9736485c6f3ee994c91366addd60a930de97d2e0d09b37fc57a57fea326e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "39bc9736485c6f3ee994c91366addd60a930de97d2e0d09b37fc57a57fea326e", kill_on_drop: false }`
[INFO] [stdout] 39bc9736485c6f3ee994c91366addd60a930de97d2e0d09b37fc57a57fea326e