[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 try#d990716b6a1fdde1300748828a9c9e79dfd0b898 for pr-74846
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkdy1%2Fstackoverflow-56728860" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/kdy1/stackoverflow-56728860 on toolchain d990716b6a1fdde1300748828a9c9e79dfd0b898
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d990716b6a1fdde1300748828a9c9e79dfd0b898" "read-manifest" "--manifest-path" "Cargo.toml", 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-7/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" "+d990716b6a1fdde1300748828a9c9e79dfd0b898" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded chashmap v2.2.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+d990716b6a1fdde1300748828a9c9e79dfd0b898" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5b7fc7bc77bee39f2121d6ed49fdc6a5a31bf70b6189d2cd9cee90169187fd35
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "5b7fc7bc77bee39f2121d6ed49fdc6a5a31bf70b6189d2cd9cee90169187fd35", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5b7fc7bc77bee39f2121d6ed49fdc6a5a31bf70b6189d2cd9cee90169187fd35", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5b7fc7bc77bee39f2121d6ed49fdc6a5a31bf70b6189d2cd9cee90169187fd35", kill_on_drop: false }`
[INFO] [stdout] 5b7fc7bc77bee39f2121d6ed49fdc6a5a31bf70b6189d2cd9cee90169187fd35
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+d990716b6a1fdde1300748828a9c9e79dfd0b898" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1c51a0c935e856246a2d3c340dc36ca4c237e7038256be75baff71e59b237a57
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "1c51a0c935e856246a2d3c340dc36ca4c237e7038256be75baff71e59b237a57", 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] [stderr]     Checking stable_deref_trait v1.1.1
[INFO] [stderr]     Checking smallvec v0.6.10
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking owning_ref v0.3.3
[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] [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] [stderr] error: could not compile `stackoverflow-56728860`.
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0515`.
[INFO] [stdout] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "1c51a0c935e856246a2d3c340dc36ca4c237e7038256be75baff71e59b237a57", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1c51a0c935e856246a2d3c340dc36ca4c237e7038256be75baff71e59b237a57", kill_on_drop: false }`
[INFO] [stdout] 1c51a0c935e856246a2d3c340dc36ca4c237e7038256be75baff71e59b237a57