[INFO] fetching crate sehx 0.1.2...
[INFO] checking sehx-0.1.2 against try#23ffd2897cbb44320ca18dfe4d05dbacb37d55e0 for pr-115950
[INFO] extracting crate sehx 0.1.2 into /workspace/builds/worker-5-tc2/source
[INFO] validating manifest of crates.io crate sehx 0.1.2 on toolchain 23ffd2897cbb44320ca18dfe4d05dbacb37d55e0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+23ffd2897cbb44320ca18dfe4d05dbacb37d55e0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate sehx 0.1.2
[INFO] finished tweaking crates.io crate sehx 0.1.2
[INFO] tweaked toml for crates.io crate sehx 0.1.2 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] crate crates.io crate sehx 0.1.2 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" "+23ffd2897cbb44320ca18dfe4d05dbacb37d55e0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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@sha256:4f8da3c744d2da974e54ce020a79f4ad54313e914ebeaab8fc086f07e8d8b066" "/opt/rustwide/cargo-home/bin/cargo" "+23ffd2897cbb44320ca18dfe4d05dbacb37d55e0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d26c0549bfafe7bc281058d7dca956f0448df47b64257473f6e9d286b98d8fe7
[INFO] running `Command { std: "docker" "start" "-a" "d26c0549bfafe7bc281058d7dca956f0448df47b64257473f6e9d286b98d8fe7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d26c0549bfafe7bc281058d7dca956f0448df47b64257473f6e9d286b98d8fe7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d26c0549bfafe7bc281058d7dca956f0448df47b64257473f6e9d286b98d8fe7", kill_on_drop: false }`
[INFO] [stdout] d26c0549bfafe7bc281058d7dca956f0448df47b64257473f6e9d286b98d8fe7
[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@sha256:4f8da3c744d2da974e54ce020a79f4ad54313e914ebeaab8fc086f07e8d8b066" "/opt/rustwide/cargo-home/bin/cargo" "+23ffd2897cbb44320ca18dfe4d05dbacb37d55e0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6c90600e550f84329f961bf92fcdda91692d4bfcdd1598af314ce52f745145b7
[INFO] running `Command { std: "docker" "start" "-a" "6c90600e550f84329f961bf92fcdda91692d4bfcdd1598af314ce52f745145b7", kill_on_drop: false }`
[INFO] [stderr]     Checking sehx v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0515]: cannot return value referencing function parameter `ua`
[INFO] [stdout]   --> src/lib.rs:33:40
[INFO] [stdout]    |
[INFO] [stdout] 33 |     buf.iter().map(sehx).flat_map(|ua| split_u16_to_u8s(&ua))
[INFO] [stdout]    |                                        ^^^^^^^^^^^^^^^^^---^
[INFO] [stdout]    |                                        |                |
[INFO] [stdout]    |                                        |                `ua` is borrowed here
[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: could not compile `sehx` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error[E0515]: cannot return value referencing function parameter `ua`
[INFO] [stdout]   --> src/lib.rs:33:40
[INFO] [stdout]    |
[INFO] [stdout] 33 |     buf.iter().map(sehx).flat_map(|ua| split_u16_to_u8s(&ua))
[INFO] [stdout]    |                                        ^^^^^^^^^^^^^^^^^---^
[INFO] [stdout]    |                                        |                |
[INFO] [stdout]    |                                        |                `ua` is borrowed here
[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: could not compile `sehx` (lib test) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "6c90600e550f84329f961bf92fcdda91692d4bfcdd1598af314ce52f745145b7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6c90600e550f84329f961bf92fcdda91692d4bfcdd1598af314ce52f745145b7", kill_on_drop: false }`
[INFO] [stdout] 6c90600e550f84329f961bf92fcdda91692d4bfcdd1598af314ce52f745145b7