[INFO] cloning repository https://github.com/gvelim/CSX0003RUST
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/gvelim/CSX0003RUST" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgvelim%2FCSX0003RUST", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgvelim%2FCSX0003RUST'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 71e39cb5eeab7153d5c25340fd2cf404b5b7e5ed
[INFO] checking gvelim/CSX0003RUST against try#901e6d56697c79b2e80df6a487b2318ec6f57ee3 for pr-142287
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgvelim%2FCSX0003RUST" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/gvelim/CSX0003RUST on toolchain 901e6d56697c79b2e80df6a487b2318ec6f57ee3
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+901e6d56697c79b2e80df6a487b2318ec6f57ee3" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/gvelim/CSX0003RUST
[INFO] finished tweaking git repo https://github.com/gvelim/CSX0003RUST
[INFO] tweaked toml for git repo https://github.com/gvelim/CSX0003RUST written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/gvelim/CSX0003RUST 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" "+901e6d56697c79b2e80df6a487b2318ec6f57ee3" "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-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+901e6d56697c79b2e80df6a487b2318ec6f57ee3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 829dbdd7ffc4f98992705bb24d8ec6d0fc8b8b3717a8c800dcf5b7eb95875afb
[INFO] running `Command { std: "docker" "start" "-a" "829dbdd7ffc4f98992705bb24d8ec6d0fc8b8b3717a8c800dcf5b7eb95875afb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "829dbdd7ffc4f98992705bb24d8ec6d0fc8b8b3717a8c800dcf5b7eb95875afb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "829dbdd7ffc4f98992705bb24d8ec6d0fc8b8b3717a8c800dcf5b7eb95875afb", kill_on_drop: false }`
[INFO] [stdout] 829dbdd7ffc4f98992705bb24d8ec6d0fc8b8b3717a8c800dcf5b7eb95875afb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+901e6d56697c79b2e80df6a487b2318ec6f57ee3" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 617ef383ce59565087ea443fbeef2c63f3a25a20da4fc8437cb0fd6f6060252d
[INFO] running `Command { std: "docker" "start" "-a" "617ef383ce59565087ea443fbeef2c63f3a25a20da4fc8437cb0fd6f6060252d", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.112
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking ppv-lite86 v0.2.15
[INFO] [stderr]     Checking hashbag v0.1.9
[INFO] [stderr]     Checking getrandom v0.2.3
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.4
[INFO] [stderr]     Checking csx3 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0515]: cannot return value referencing temporary value
[INFO] [stdout]    --> src/linkedlists/mod.rs:103:17
[INFO] [stdout]     |
[INFO] [stdout] 103 | /                 ListIterByRef {
[INFO] [stdout] 104 | |                     cursor: &List::Empty,
[INFO] [stdout]     | |                              ----------- temporary value created here
[INFO] [stdout] 105 | |                 },
[INFO] [stdout]     | |_________________^ returns a value referencing data owned by the current function
[INFO] [stdout]     |
[INFO] [stdout]     = help: use `.collect()` to allocate the iterator
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0515`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `csx3` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error[E0515]: cannot return value referencing temporary value
[INFO] [stdout]    --> src/linkedlists/mod.rs:103:17
[INFO] [stdout]     |
[INFO] [stdout] 103 | /                 ListIterByRef {
[INFO] [stdout] 104 | |                     cursor: &List::Empty,
[INFO] [stdout]     | |                              ----------- temporary value created here
[INFO] [stdout] 105 | |                 },
[INFO] [stdout]     | |_________________^ returns a value referencing data owned by the current function
[INFO] [stdout]     |
[INFO] [stdout]     = help: use `.collect()` to allocate the iterator
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0515`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `csx3` (lib test) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "617ef383ce59565087ea443fbeef2c63f3a25a20da4fc8437cb0fd6f6060252d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "617ef383ce59565087ea443fbeef2c63f3a25a20da4fc8437cb0fd6f6060252d", kill_on_drop: false }`
[INFO] [stdout] 617ef383ce59565087ea443fbeef2c63f3a25a20da4fc8437cb0fd6f6060252d