[INFO] cloning repository https://github.com/FeanorTheElf/basic-crypto-experiments
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/FeanorTheElf/basic-crypto-experiments" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFeanorTheElf%2Fbasic-crypto-experiments", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFeanorTheElf%2Fbasic-crypto-experiments'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e0a43aac454ca493b8e6205b8417ea4002b79748
[INFO] checking FeanorTheElf/basic-crypto-experiments against try#0818a9065516e3afb806892a26657c556d485386 for pr-110322-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFeanorTheElf%2Fbasic-crypto-experiments" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/FeanorTheElf/basic-crypto-experiments on toolchain 0818a9065516e3afb806892a26657c556d485386
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0818a9065516e3afb806892a26657c556d485386" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/FeanorTheElf/basic-crypto-experiments
[INFO] finished tweaking git repo https://github.com/FeanorTheElf/basic-crypto-experiments
[INFO] tweaked toml for git repo https://github.com/FeanorTheElf/basic-crypto-experiments written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/FeanorTheElf/basic-crypto-experiments 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" "+0818a9065516e3afb806892a26657c556d485386" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:97d61d7686bf65f8ecb15491ab51835e82dc9176a96a831f143a431b191fc501" "/opt/rustwide/cargo-home/bin/cargo" "+0818a9065516e3afb806892a26657c556d485386" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e7561ce225e2d51f9db09500927adf05b3b4ea8d0b5ca30ff9b9fc370966d33b
[INFO] running `Command { std: "docker" "start" "-a" "e7561ce225e2d51f9db09500927adf05b3b4ea8d0b5ca30ff9b9fc370966d33b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e7561ce225e2d51f9db09500927adf05b3b4ea8d0b5ca30ff9b9fc370966d33b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e7561ce225e2d51f9db09500927adf05b3b4ea8d0b5ca30ff9b9fc370966d33b", kill_on_drop: false }`
[INFO] [stdout] e7561ce225e2d51f9db09500927adf05b3b4ea8d0b5ca30ff9b9fc370966d33b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:97d61d7686bf65f8ecb15491ab51835e82dc9176a96a831f143a431b191fc501" "/opt/rustwide/cargo-home/bin/cargo" "+0818a9065516e3afb806892a26657c556d485386" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0706e33c136952814ce72d8046b2e9aefebf242c3637a46946cc09b4b469fbce
[INFO] running `Command { std: "docker" "start" "-a" "0706e33c136952814ce72d8046b2e9aefebf242c3637a46946cc09b4b469fbce", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.125
[INFO] [stderr]    Compiling proc-macro2 v1.0.37
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.92
[INFO] [stderr]     Checking ppv-lite86 v0.2.16
[INFO] [stderr]     Checking array-init v2.0.0
[INFO] [stderr]     Checking oorandom v11.1.3
[INFO] [stderr]     Checking take_mut v0.2.2
[INFO] [stderr]    Compiling quote v1.0.18
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]    Compiling contracts v0.4.0
[INFO] [stderr]     Checking vector-map v1.0.1
[INFO] [stderr]     Checking feanor_la v0.1.0 (https://github.com/FeanorTheElf/FeanorLA#eed11aa9)
[INFO] [stdout] error[E0515]: cannot return value referencing temporary value
[INFO] [stdout]    --> /opt/rustwide/cargo-home/git/checkouts/feanorla-b6e14b5a03f52c0b/eed11aa/src/la/matrix_view.rs:211:28
[INFO] [stdout]     |
[INFO] [stdout] 211 |                       return Some(OwnedMatrixRowMutRef {
[INFO] [stdout]     |  ____________________________^
[INFO] [stdout] 212 | |                         data: &mut T::EMPTY_SLICE[..]
[INFO] [stdout]     | |                                    -------------- temporary value created here
[INFO] [stdout] 213 | |                     });
[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 `feanor_la` (lib) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "0706e33c136952814ce72d8046b2e9aefebf242c3637a46946cc09b4b469fbce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0706e33c136952814ce72d8046b2e9aefebf242c3637a46946cc09b4b469fbce", kill_on_drop: false }`
[INFO] [stdout] 0706e33c136952814ce72d8046b2e9aefebf242c3637a46946cc09b4b469fbce