[INFO] cloning repository https://github.com/LDY1998/prusti-examples
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/LDY1998/prusti-examples" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLDY1998%2Fprusti-examples", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLDY1998%2Fprusti-examples'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] eeb84dce66d15aeabebbc3a46b7a3f8bc2c4121e
[INFO] checking LDY1998/prusti-examples against try#7c3a44cf5f95fa5cf164a312bdcf845157af7093 for pr-77325
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLDY1998%2Fprusti-examples" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/LDY1998/prusti-examples on toolchain 7c3a44cf5f95fa5cf164a312bdcf845157af7093
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7c3a44cf5f95fa5cf164a312bdcf845157af7093" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/LDY1998/prusti-examples
[INFO] finished tweaking git repo https://github.com/LDY1998/prusti-examples
[INFO] tweaked toml for git repo https://github.com/LDY1998/prusti-examples written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/LDY1998/prusti-examples already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7c3a44cf5f95fa5cf164a312bdcf845157af7093" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+7c3a44cf5f95fa5cf164a312bdcf845157af7093" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fb52a8d944083b459a35595428669d72f1865423800a8b7c7c6d8d7e68883ba0
[INFO] running `Command { std: "docker" "start" "-a" "fb52a8d944083b459a35595428669d72f1865423800a8b7c7c6d8d7e68883ba0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fb52a8d944083b459a35595428669d72f1865423800a8b7c7c6d8d7e68883ba0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fb52a8d944083b459a35595428669d72f1865423800a8b7c7c6d8d7e68883ba0", kill_on_drop: false }`
[INFO] [stdout] fb52a8d944083b459a35595428669d72f1865423800a8b7c7c6d8d7e68883ba0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+7c3a44cf5f95fa5cf164a312bdcf845157af7093" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9071fe5e98c99d6b99cf46423394a7120394f7f03d4b390737424b17bbfb93a4
[INFO] running `Command { std: "docker" "start" "-a" "9071fe5e98c99d6b99cf46423394a7120394f7f03d4b390737424b17bbfb93a4", kill_on_drop: false }`
[INFO] [stderr]     Checking times v0.1.0 (/opt/rustwide/workdir/times)
[INFO] [stderr]     Checking prusti-tryout v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking timer v0.1.0 (/opt/rustwide/workdir/timer)
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]  --> timer/src/main.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 |     let y = add_one(10);
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]  --> timer/src/main.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 |     let y = add_one(10);
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_y`
[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] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.68s
[INFO] running `Command { std: "docker" "inspect" "9071fe5e98c99d6b99cf46423394a7120394f7f03d4b390737424b17bbfb93a4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9071fe5e98c99d6b99cf46423394a7120394f7f03d4b390737424b17bbfb93a4", kill_on_drop: false }`
[INFO] [stdout] 9071fe5e98c99d6b99cf46423394a7120394f7f03d4b390737424b17bbfb93a4