[INFO] cloning repository https://github.com/frankstien10/playground
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/frankstien10/playground" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffrankstien10%2Fplayground", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffrankstien10%2Fplayground'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e6748feacc352db6cbcba77e98d59fab3cb26d0d
[INFO] testing frankstien10/playground against 1.100.0-beta.1+cargoflags=--release for beta-release-1.100-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffrankstien10%2Fplayground" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/frankstien10/playground
[INFO] finished tweaking git repo https://github.com/frankstien10/playground
[INFO] tweaked toml for git repo https://github.com/frankstien10/playground written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/frankstien10/playground on toolchain 1.100.0-beta.1
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.100.0-beta.1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/frankstien10/playground 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" "+1.100.0-beta.1" "fetch" "--manifest-path" "Cargo.toml", 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:77db811e55d90add9212f6832c23229e3de5f1c1f9905e8cb07319ea15df73ac" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 69b04259dad6a24fabe77942a9b6cc894c2b824421cee34670e876da797b918d
[INFO] running `Command { std: "docker" "start" "69b04259dad6a24fabe77942a9b6cc894c2b824421cee34670e876da797b918d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "69b04259dad6a24fabe77942a9b6cc894c2b824421cee34670e876da797b918d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "69b04259dad6a24fabe77942a9b6cc894c2b824421cee34670e876da797b918d" "/opt/rustwide/cargo-home/bin/cargo" "+1.100.0-beta.1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "69b04259dad6a24fabe77942a9b6cc894c2b824421cee34670e876da797b918d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-w" "/opt/rustwide/workdir" "--user" "0:0" "69b04259dad6a24fabe77942a9b6cc894c2b824421cee34670e876da797b918d" "/opt/rustwide/cargo-home/bin/cargo" "+1.100.0-beta.1" "build" "--frozen" "--message-format=json" "--release", kill_on_drop: false }`
[INFO] [stderr]    Compiling playground v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0106]: missing lifetime specifier
[INFO] [stdout]  --> src/list.rs:5:20
[INFO] [stdout]   |
[INFO] [stdout] 5 |     ptr: Arc<Mutex<&List<T>>>
[INFO] [stdout]   |                    ^ expected named lifetime parameter
[INFO] [stdout]   |
[INFO] [stdout] help: consider introducing a named lifetime parameter
[INFO] [stdout]   |
[INFO] [stdout] 3 ~ struct List<'a, T>{
[INFO] [stdout] 4 |     data: T,
[INFO] [stdout] 5 ~     ptr: Arc<Mutex<&'a List<T>>>
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0107]: missing generics for struct `List`
[INFO] [stdout]  --> src/list.rs:9:40
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub fn making_list<T>(input : Vec<T>)->List{
[INFO] [stdout]   |                                        ^^^^ expected 1 generic argument
[INFO] [stdout]   |
[INFO] [stdout] note: struct defined here, with 1 generic parameter: `T`
[INFO] [stdout]  --> src/list.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | struct List<T>{
[INFO] [stdout]   |        ^^^^ -
[INFO] [stdout] help: add missing generic argument
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub fn making_list<T>(input : Vec<T>)->List<T>{
[INFO] [stdout]   |                                            +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0106, E0107.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0106`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `playground` (bin "playground") due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "69b04259dad6a24fabe77942a9b6cc894c2b824421cee34670e876da797b918d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "69b04259dad6a24fabe77942a9b6cc894c2b824421cee34670e876da797b918d", kill_on_drop: false }`
[INFO] [stdout] 69b04259dad6a24fabe77942a9b6cc894c2b824421cee34670e876da797b918d
