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[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kpietak/rust-lecture-examples" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkpietak%2Frust-lecture-examples", kill_on_drop: false }`
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[INFO] [stdout] 4a279d0d204cd6b706d48b5df6ba9e78786712e3
[INFO] checking kpietak/rust-lecture-examples against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkpietak%2Frust-lecture-examples" "/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/kpietak/rust-lecture-examples on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
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[INFO] started tweaking git repo https://github.com/kpietak/rust-lecture-examples
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[INFO] tweaked toml for git repo https://github.com/kpietak/rust-lecture-examples written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/kpietak/rust-lecture-examples already has a lockfile, it will not be regenerated
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[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 }`
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[INFO] running `Command { std: "docker" "inspect" "3b5513d0c7e95035c8517e941bb34b99210036675c9eee979e9372ce916d975a", kill_on_drop: false }`
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[INFO] [stdout] e650f97e4467c9422467e75a548ed3f19ee8be08717c9af985831a9f471e89d9
[INFO] running `Command { std: "docker" "start" "-a" "e650f97e4467c9422467e75a548ed3f19ee8be08717c9af985831a9f471e89d9", kill_on_drop: false }`
[INFO] [stderr]    Compiling pkg-config v0.3.30
[INFO] [stderr]    Compiling cc v1.0.88
[INFO] [stderr]     Checking mio v0.8.11
[INFO] [stderr]     Checking num_cpus v1.16.0
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[INFO] [stderr]    Compiling openssl v0.10.64
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[INFO] [stderr]    Compiling serde v1.0.197
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[INFO] [stderr]     Checking unicode-normalization v0.1.23
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[INFO] [stderr]     Checking idna v0.5.0
[INFO] [stderr]     Checking base64 v0.21.7
[INFO] [stderr]     Checking rustls-pemfile v1.0.4
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[INFO] [stderr]    Compiling openssl-macros v0.1.1
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[INFO] [stderr]     Checking reqwest v0.11.24
[INFO] [stderr]     Checking rust-lecture-examples v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `s2`
[INFO] [stdout]  --> examples/basics.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let s2 = s1; // the value is moved from s1 to s2, s1 is no longer valid
[INFO] [stdout]   |         ^^ help: if this is intentional, prefix it with an underscore: `_s2`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` 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 32.82s
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[INFO] [stdout] e650f97e4467c9422467e75a548ed3f19ee8be08717c9af985831a9f471e89d9