[INFO] updating cached repository https://github.com/cgati/rust-linked-list
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/big/crater/work/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] b764ad70216463acda72ae2e8e44967fef0bcb06
[INFO] testing cgati/rust-linked-list against beta-2019-09-28 for beta-1.39-1
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcgati%2Frust-linked-list" "work/builds/worker-4/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/cgati/rust-linked-list on toolchain beta-2019-09-28
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/cgati/rust-linked-list
[INFO] finished tweaking git repo https://github.com/cgati/rust-linked-list
[INFO] tweaked toml for git repo https://github.com/cgati/rust-linked-list written to work/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/cgati/rust-linked-list already has a lockfile, it will not be regenerated
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-4/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2019-09-28" "build" "--frozen"`
[INFO] [stdout] f6b5dd7738a278f141153fbd34a9e296fa4c734698ada870165fbc0109adbf84
[INFO] running `"docker" "start" "-a" "f6b5dd7738a278f141153fbd34a9e296fa4c734698ada870165fbc0109adbf84"`
[INFO] [stderr]    Compiling rust-linked-list v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0412]: cannot find type `uint` in this scope
[INFO] [stderr]  --> src/main.rs:2:10
[INFO] [stderr]   |
[INFO] [stderr] 2 |     Cons(uint, Box<Node>),
[INFO] [stderr]   |          ^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find value `Nil` in this scope
[INFO] [stderr]  --> src/main.rs:8:9
[INFO] [stderr]   |
[INFO] [stderr] 8 |         Nil
[INFO] [stderr]   |         ^^^ not found in this scope
[INFO] [stderr] help: possible candidate is found in another module, you can import it into scope
[INFO] [stderr]   |
[INFO] [stderr] 1 | use Node::Nil;
[INFO] [stderr]   |
[INFO] [stderr] 
[INFO] [stderr] error[E0412]: cannot find type `uint` in this scope
[INFO] [stderr]   --> src/main.rs:11:36
[INFO] [stderr]    |
[INFO] [stderr] 11 |     fn append_to_front(self, elem: uint) -> Node {
[INFO] [stderr]    |                                    ^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `Cons` in this scope
[INFO] [stderr]   --> src/main.rs:12:9
[INFO] [stderr]    |
[INFO] [stderr] 12 |         Cons(elem, box self)
[INFO] [stderr]    |         ^^^^ not found in this scope
[INFO] [stderr] help: possible candidate is found in another module, you can import it into scope
[INFO] [stderr]    |
[INFO] [stderr] 1  | use Node::Cons;
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] error[E0412]: cannot find type `uint` in this scope
[INFO] [stderr]   --> src/main.rs:15:24
[INFO] [stderr]    |
[INFO] [stderr] 15 |     fn value(&self) -> uint {
[INFO] [stderr]    |                        ^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0531]: cannot find tuple struct/variant `Cons` in this scope
[INFO] [stderr]   --> src/main.rs:17:13
[INFO] [stderr]    |
[INFO] [stderr] 17 |             Cons(x, _) => x,
[INFO] [stderr]    |             ^^^^ not found in this scope
[INFO] [stderr] help: possible candidate is found in another module, you can import it into scope
[INFO] [stderr]    |
[INFO] [stderr] 1  | use Node::Cons;
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] error[E0531]: cannot find tuple struct/variant `Cons` in this scope
[INFO] [stderr]   --> src/main.rs:26:13
[INFO] [stderr]    |
[INFO] [stderr] 26 |             Cons(_, tail) => *tail,
[INFO] [stderr]    |             ^^^^ not found in this scope
[INFO] [stderr] help: possible candidate is found in another module, you can import it into scope
[INFO] [stderr]    |
[INFO] [stderr] 1  | use Node::Cons;
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] error[E0412]: cannot find type `uint` in this scope
[INFO] [stderr]   --> src/main.rs:31:30
[INFO] [stderr]    |
[INFO] [stderr] 31 |     fn contains(&self, elem: uint) -> bool {
[INFO] [stderr]    |                              ^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0531]: cannot find tuple struct/variant `Cons` in this scope
[INFO] [stderr]   --> src/main.rs:33:13
[INFO] [stderr]    |
[INFO] [stderr] 33 |             Cons(x, ref tail) => if x == elem { true } else { tail.contains(elem) },
[INFO] [stderr]    |             ^^^^ not found in this scope
[INFO] [stderr] help: possible candidate is found in another module, you can import it into scope
[INFO] [stderr]    |
[INFO] [stderr] 1  | use Node::Cons;
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] error[E0412]: cannot find type `uint` in this scope
[INFO] [stderr]   --> src/main.rs:38:25
[INFO] [stderr]    |
[INFO] [stderr] 38 |     fn length(&self) -> uint {
[INFO] [stderr]    |                         ^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0531]: cannot find tuple struct/variant `Cons` in this scope
[INFO] [stderr]   --> src/main.rs:40:13
[INFO] [stderr]    |
[INFO] [stderr] 40 |             Cons(_, ref tail) => 1 + tail.length(),
[INFO] [stderr]    |             ^^^^ not found in this scope
[INFO] [stderr] help: possible candidate is found in another module, you can import it into scope
[INFO] [stderr]    |
[INFO] [stderr] 1  | use Node::Cons;
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] error[E0531]: cannot find tuple struct/variant `Cons` in this scope
[INFO] [stderr]   --> src/main.rs:47:13
[INFO] [stderr]    |
[INFO] [stderr] 47 |             Cons(x, ref tail) => {
[INFO] [stderr]    |             ^^^^ not found in this scope
[INFO] [stderr] help: possible candidate is found in another module, you can import it into scope
[INFO] [stderr]    |
[INFO] [stderr] 1  | use Node::Cons;
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `Cons` in this scope
[INFO] [stderr]   --> src/main.rs:60:26
[INFO] [stderr]    |
[INFO] [stderr] 60 |     let mut head: Node = Cons(1, box Nil);
[INFO] [stderr]    |                          ^^^^ not found in this scope
[INFO] [stderr] help: possible candidate is found in another module, you can import it into scope
[INFO] [stderr]    |
[INFO] [stderr] 1  | use Node::Cons;
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find value `Nil` in this scope
[INFO] [stderr]   --> src/main.rs:60:38
[INFO] [stderr]    |
[INFO] [stderr] 60 |     let mut head: Node = Cons(1, box Nil);
[INFO] [stderr]    |                                      ^^^ not found in this scope
[INFO] [stderr] help: possible candidate is found in another module, you can import it into scope
[INFO] [stderr]    |
[INFO] [stderr] 1  | use Node::Nil;
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: box expression syntax is experimental; you can call `Box::new` instead
[INFO] [stderr]   --> src/main.rs:12:20
[INFO] [stderr]    |
[INFO] [stderr] 12 |         Cons(elem, box self)
[INFO] [stderr]    |                    ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: for more information, see https://github.com/rust-lang/rust/issues/49733
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: box expression syntax is experimental; you can call `Box::new` instead
[INFO] [stderr]   --> src/main.rs:60:34
[INFO] [stderr]    |
[INFO] [stderr] 60 |     let mut head: Node = Cons(1, box Nil);
[INFO] [stderr]    |                                  ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: for more information, see https://github.com/rust-lang/rust/issues/49733
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 16 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0412, E0425, E0658.
[INFO] [stderr] For more information about an error, try `rustc --explain E0412`.
[INFO] [stderr] error: could not compile `rust-linked-list`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "f6b5dd7738a278f141153fbd34a9e296fa4c734698ada870165fbc0109adbf84"`
[INFO] running `"docker" "rm" "-f" "f6b5dd7738a278f141153fbd34a9e296fa4c734698ada870165fbc0109adbf84"`
[INFO] [stdout] f6b5dd7738a278f141153fbd34a9e296fa4c734698ada870165fbc0109adbf84