[INFO] cloning repository https://github.com/Eraden/enso
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Eraden/enso" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FEraden%2Fenso", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FEraden%2Fenso'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4cd021977f523650a28d9c77ce1c4d1e7c280065
[INFO] checking Eraden/enso against master#db1fb85cff63ad5fffe435e17128f99f9e1d970c for pr-89056
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FEraden%2Fenso" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Eraden/enso on toolchain db1fb85cff63ad5fffe435e17128f99f9e1d970c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Eraden/enso
[INFO] finished tweaking git repo https://github.com/Eraden/enso
[INFO] tweaked toml for git repo https://github.com/Eraden/enso written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/Eraden/enso already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6265e51d58ebc61a3405514fcaa4aa95d0031959407b352f42b6178cf12129de
[INFO] running `Command { std: "docker" "start" "-a" "6265e51d58ebc61a3405514fcaa4aa95d0031959407b352f42b6178cf12129de", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6265e51d58ebc61a3405514fcaa4aa95d0031959407b352f42b6178cf12129de", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6265e51d58ebc61a3405514fcaa4aa95d0031959407b352f42b6178cf12129de", kill_on_drop: false }`
[INFO] [stdout] 6265e51d58ebc61a3405514fcaa4aa95d0031959407b352f42b6178cf12129de
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c3b083e92965b6686cd383e757fa3ef855cd67326d390ca8c586058acbb5ce20
[INFO] running `Command { std: "docker" "start" "-a" "c3b083e92965b6686cd383e757fa3ef855cd67326d390ca8c586058acbb5ce20", kill_on_drop: false }`
[INFO] [stderr]     Checking enso v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0499]: cannot borrow `*self` as mutable more than once at a time
[INFO] [stdout]   --> src/bin/borrow_error.rs:48:21
[INFO] [stdout]    |
[INFO] [stdout] 45 |     fn get_or_register_mut<T>(&mut self, id: usize) -> ShapeSystemRegistryEntryRef {
[INFO] [stdout]    |                               - let's call the lifetime of this reference `'1`
[INFO] [stdout] 46 |         match self.get_mut(id) {
[INFO] [stdout]    |               ---- first mutable borrow occurs here
[INFO] [stdout] 47 |             Some(entry) => entry,
[INFO] [stdout]    |                            ----- returning this value requires that `*self` is borrowed for `'1`
[INFO] [stdout] 48 |             None => self.register(id),
[INFO] [stdout]    |                     ^^^^ second mutable borrow occurs here
[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 E0499`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `enso` due to 2 previous errors
[INFO] [stdout] error[E0499]: cannot borrow `*b2` as mutable more than once at a time
[INFO] [stdout]   --> src/bin/mutable_borrows.rs:32:5
[INFO] [stdout]    |
[INFO] [stdout] 28 |     let v1 = &mut b2[0];
[INFO] [stdout]    |                   -- first mutable borrow occurs here
[INFO] [stdout] ...
[INFO] [stdout] 32 |     b2.push(3);
[INFO] [stdout]    |     ^^ second mutable borrow occurs here
[INFO] [stdout] 33 |     println!("{:?}", rc);
[INFO] [stdout] 34 |     println!("{:?}", v1);
[INFO] [stdout]    |                      -- first borrow later used here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error[E0499]: cannot borrow `*self` as mutable more than once at a time
[INFO] [stdout]   --> src/bin/borrow_error.rs:48:21
[INFO] [stdout]    |
[INFO] [stdout] 45 |     fn get_or_register_mut<T>(&mut self, id: usize) -> ShapeSystemRegistryEntryRef {
[INFO] [stdout]    |                               - let's call the lifetime of this reference `'1`
[INFO] [stdout] 46 |         match self.get_mut(id) {
[INFO] [stdout]    |               ---- first mutable borrow occurs here
[INFO] [stdout] 47 |             Some(entry) => entry,
[INFO] [stdout]    |                            ----- returning this value requires that `*self` is borrowed for `'1`
[INFO] [stdout] 48 |             None => self.register(id),
[INFO] [stdout]    |                     ^^^^ second mutable borrow occurs here
[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 E0499`.
[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 E0499`.
[INFO] [stdout] 
[INFO] [stdout] error[E0499]: cannot borrow `*b2` as mutable more than once at a time
[INFO] [stdout]   --> src/bin/mutable_borrows.rs:32:5
[INFO] [stdout]    |
[INFO] [stdout] 28 |     let v1 = &mut b2[0];
[INFO] [stdout]    |                   -- first mutable borrow occurs here
[INFO] [stdout] ...
[INFO] [stdout] 32 |     b2.push(3);
[INFO] [stdout]    |     ^^ second mutable borrow occurs here
[INFO] [stdout] 33 |     println!("{:?}", rc);
[INFO] [stdout] 34 |     println!("{:?}", v1);
[INFO] [stdout]    |                      -- first borrow later used here
[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 E0499`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "c3b083e92965b6686cd383e757fa3ef855cd67326d390ca8c586058acbb5ce20", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c3b083e92965b6686cd383e757fa3ef855cd67326d390ca8c586058acbb5ce20", kill_on_drop: false }`
[INFO] [stdout] c3b083e92965b6686cd383e757fa3ef855cd67326d390ca8c586058acbb5ce20