[INFO] cloning repository https://github.com/kdy1/stackoverflow-56728860
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kdy1/stackoverflow-56728860" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkdy1%2Fstackoverflow-56728860", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkdy1%2Fstackoverflow-56728860'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d62317ad0185ef789216ea871c78016ff9649be1
[INFO] checking kdy1/stackoverflow-56728860 against master#90442458ac46b1d5eed752c316da25450f67285b for pr-81477
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkdy1%2Fstackoverflow-56728860" "/workspace/builds/worker-9/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/kdy1/stackoverflow-56728860 on toolchain 90442458ac46b1d5eed752c316da25450f67285b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/kdy1/stackoverflow-56728860
[INFO] finished tweaking git repo https://github.com/kdy1/stackoverflow-56728860
[INFO] tweaked toml for git repo https://github.com/kdy1/stackoverflow-56728860 written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/kdy1/stackoverflow-56728860 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2083299de1f7b94a2613158d9ade40cb65f1de13187af42cee491e9d83533259
[INFO] running `Command { std: "docker" "start" "-a" "2083299de1f7b94a2613158d9ade40cb65f1de13187af42cee491e9d83533259", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2083299de1f7b94a2613158d9ade40cb65f1de13187af42cee491e9d83533259", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2083299de1f7b94a2613158d9ade40cb65f1de13187af42cee491e9d83533259", kill_on_drop: false }`
[INFO] [stdout] 2083299de1f7b94a2613158d9ade40cb65f1de13187af42cee491e9d83533259
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1e616180dbe1e204fce8d292ee3fd3decf964d51b273d8d17f4feacdf6f33329
[INFO] running `Command { std: "docker" "start" "-a" "1e616180dbe1e204fce8d292ee3fd3decf964d51b273d8d17f4feacdf6f33329", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.58
[INFO] [stderr]     Checking stable_deref_trait v1.1.1
[INFO] [stderr]     Checking lazy_static v1.3.0
[INFO] [stderr]     Checking owning_ref v0.3.3
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking parking_lot_core v0.2.14
[INFO] [stderr]     Checking parking_lot v0.4.8
[INFO] [stderr]     Checking chashmap v2.2.2
[INFO] [stderr]     Checking stackoverflow-56728860 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0515]: cannot return value referencing local variable `lib`
[INFO] [stdout]   --> src/main.rs:32:16
[INFO] [stdout]    |
[INFO] [stdout] 31 |     if let Some(ty) = lib.types.get(name) {
[INFO] [stdout]    |                       --- `lib` is borrowed here
[INFO] [stdout] 32 |         return Some(&*ty);
[INFO] [stdout]    |                ^^^^^^^^^^ returns a value referencing data owned by the current function
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `stackoverflow-56728860`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0515`.
[INFO] [stdout] 
[INFO] [stdout] error[E0515]: cannot return value referencing local variable `lib`
[INFO] [stdout]   --> src/main.rs:32:16
[INFO] [stdout]    |
[INFO] [stdout] 31 |     if let Some(ty) = lib.types.get(name) {
[INFO] [stdout]    |                       --- `lib` is borrowed here
[INFO] [stdout] 32 |         return Some(&*ty);
[INFO] [stdout]    |                ^^^^^^^^^^ returns a value referencing data owned by the current function
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0515`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "1e616180dbe1e204fce8d292ee3fd3decf964d51b273d8d17f4feacdf6f33329", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1e616180dbe1e204fce8d292ee3fd3decf964d51b273d8d17f4feacdf6f33329", kill_on_drop: false }`
[INFO] [stdout] 1e616180dbe1e204fce8d292ee3fd3decf964d51b273d8d17f4feacdf6f33329