[INFO] cloning repository https://github.com/wyhinton/enum_dispatch_issue
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/wyhinton/enum_dispatch_issue" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwyhinton%2Fenum_dispatch_issue", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwyhinton%2Fenum_dispatch_issue'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 31576a08478e61cfd37d2d5190bdd15541aa5c6e
[INFO] testing wyhinton/enum_dispatch_issue against try#ce59db7a1b1b012fb2793c4641c1bdecad7a128b for pr-85530
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwyhinton%2Fenum_dispatch_issue" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/wyhinton/enum_dispatch_issue on toolchain ce59db7a1b1b012fb2793c4641c1bdecad7a128b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/wyhinton/enum_dispatch_issue
[INFO] finished tweaking git repo https://github.com/wyhinton/enum_dispatch_issue
[INFO] tweaked toml for git repo https://github.com/wyhinton/enum_dispatch_issue written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/wyhinton/enum_dispatch_issue already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded enum_dispatch v0.3.6
[INFO] [stderr]   Downloaded arrayvec v0.7.0
[INFO] [stderr]   Downloaded syn v1.0.70
[INFO] [stderr]   Downloaded colored v2.0.0
[INFO] [stderr]   Downloaded undo v0.46.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6c6e8477ad13a81e223303bb4abdefc6609dbfb90d4b7da4e5a14b928e36447c
[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" "6c6e8477ad13a81e223303bb4abdefc6609dbfb90d4b7da4e5a14b928e36447c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6c6e8477ad13a81e223303bb4abdefc6609dbfb90d4b7da4e5a14b928e36447c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6c6e8477ad13a81e223303bb4abdefc6609dbfb90d4b7da4e5a14b928e36447c", kill_on_drop: false }`
[INFO] [stdout] 6c6e8477ad13a81e223303bb4abdefc6609dbfb90d4b7da4e5a14b928e36447c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 17f85ee9bdd29a538ff1975c2cd65bf1e70c3b30441491f44cb046116bf18362
[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" "17f85ee9bdd29a538ff1975c2cd65bf1e70c3b30441491f44cb046116bf18362", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.26
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling libc v0.2.94
[INFO] [stderr]    Compiling serde_derive v1.0.125
[INFO] [stderr]    Compiling serde v1.0.125
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling arrayvec v0.7.0
[INFO] [stderr]    Compiling once_cell v1.7.2
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling syn v1.0.70
[INFO] [stderr]    Compiling colored v2.0.0
[INFO] [stderr]    Compiling enum_dispatch v0.3.6
[INFO] [stderr]    Compiling undo v0.46.2
[INFO] [stderr]    Compiling hello_cargo v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `test`
[INFO] [stdout]   --> src/main.rs:71:25
[INFO] [stdout]    |
[INFO] [stdout] 71 |     fn merge(&mut self, test: &mut AppActionEnum) -> Merged {
[INFO] [stdout]    |                         ^^^^ help: if this is intentional, prefix it with an underscore: `_test`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `name`
[INFO] [stdout]   --> src/main.rs:32:32
[INFO] [stdout]    |
[INFO] [stdout] 32 |     pub fn add_name(&mut self, name: String){
[INFO] [stdout]    |                                ^^^^ help: if this is intentional, prefix it with an underscore: `_name`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `target`
[INFO] [stdout]   --> src/main.rs:82:24
[INFO] [stdout]    |
[INFO] [stdout] 82 |     fn undo(&mut self, target: &mut AppState) -> Result<(), String>{
[INFO] [stdout]    |                        ^^^^^^ help: if this is intentional, prefix it with an underscore: `_target`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `test`
[INFO] [stdout]   --> src/main.rs:90:25
[INFO] [stdout]    |
[INFO] [stdout] 90 |     fn merge(&mut self, test: &mut AppActionEnum) -> Merged {
[INFO] [stdout]    |                         ^^^^ help: if this is intentional, prefix it with an underscore: `_test`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0499]: cannot borrow `self.history` as mutable more than once at a time
[INFO] [stdout]   --> src/main.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |         self.history.apply(self, AppActionEnum::DoAddName(AddName("testing yes".to_string())));
[INFO] [stdout]    |         ^^^^^^^^^^^^^-----^----^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |         |            |     |
[INFO] [stdout]    |         |            |     first mutable borrow occurs here
[INFO] [stdout]    |         |            first borrow later used by call
[INFO] [stdout]    |         second mutable borrow occurs here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0499]: cannot borrow `*self` as mutable more than once at a time
[INFO] [stdout]   --> src/main.rs:33:28
[INFO] [stdout]    |
[INFO] [stdout] 33 |         self.history.apply(self, AppActionEnum::DoAddName(AddName("testing yes".to_string())));
[INFO] [stdout]    |         ------------ ----- ^^^^ second mutable borrow occurs here
[INFO] [stdout]    |         |            |
[INFO] [stdout]    |         |            first borrow later used by call
[INFO] [stdout]    |         first mutable borrow occurs here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors; 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0499`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `hello_cargo`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "17f85ee9bdd29a538ff1975c2cd65bf1e70c3b30441491f44cb046116bf18362", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "17f85ee9bdd29a538ff1975c2cd65bf1e70c3b30441491f44cb046116bf18362", kill_on_drop: false }`
[INFO] [stdout] 17f85ee9bdd29a538ff1975c2cd65bf1e70c3b30441491f44cb046116bf18362