[INFO] updating cached repository darwins-challenge/moonlander-ast-rust
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/darwins-challenge/moonlander-ast-rust
[INFO] [stderr]  * branch              HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/darwins-challenge/moonlander-ast-rust" "work/ex/pr-62507/sources/master#78ca1bda3522b14bc0336bc01dd1d49fdba2cda7/gh/darwins-challenge/moonlander-ast-rust"`
[INFO] [stderr] Cloning into 'work/ex/pr-62507/sources/master#78ca1bda3522b14bc0336bc01dd1d49fdba2cda7/gh/darwins-challenge/moonlander-ast-rust'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/darwins-challenge/moonlander-ast-rust" "work/ex/pr-62507/sources/try#18481b65f318e0b4b20c0fc61340054701719d6c/gh/darwins-challenge/moonlander-ast-rust"`
[INFO] [stderr] Cloning into 'work/ex/pr-62507/sources/try#18481b65f318e0b4b20c0fc61340054701719d6c/gh/darwins-challenge/moonlander-ast-rust'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] ea69bee6ca7132db6b057df2a46fff2438c089d3
[INFO] sha for GitHub repo darwins-challenge/moonlander-ast-rust: ea69bee6ca7132db6b057df2a46fff2438c089d3
[INFO] validating manifest of darwins-challenge/moonlander-ast-rust on toolchain master#78ca1bda3522b14bc0336bc01dd1d49fdba2cda7
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+78ca1bda3522b14bc0336bc01dd1d49fdba2cda7-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of darwins-challenge/moonlander-ast-rust on toolchain try#18481b65f318e0b4b20c0fc61340054701719d6c
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+18481b65f318e0b4b20c0fc61340054701719d6c-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing darwins-challenge/moonlander-ast-rust
[INFO] finished frobbing darwins-challenge/moonlander-ast-rust
[INFO] frobbed toml for darwins-challenge/moonlander-ast-rust written to work/ex/pr-62507/sources/master#78ca1bda3522b14bc0336bc01dd1d49fdba2cda7/gh/darwins-challenge/moonlander-ast-rust/Cargo.toml
[INFO] started frobbing darwins-challenge/moonlander-ast-rust
[INFO] finished frobbing darwins-challenge/moonlander-ast-rust
[INFO] frobbed toml for darwins-challenge/moonlander-ast-rust written to work/ex/pr-62507/sources/try#18481b65f318e0b4b20c0fc61340054701719d6c/gh/darwins-challenge/moonlander-ast-rust/Cargo.toml
[INFO] crate darwins-challenge/moonlander-ast-rust already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+78ca1bda3522b14bc0336bc01dd1d49fdba2cda7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] error: the lock file /mnt/big/crater/work/ex/pr-62507/sources/master#78ca1bda3522b14bc0336bc01dd1d49fdba2cda7/gh/darwins-challenge/moonlander-ast-rust/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] the lockfile is outdated, regenerating it
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+78ca1bda3522b14bc0336bc01dd1d49fdba2cda7-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+18481b65f318e0b4b20c0fc61340054701719d6c-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+78ca1bda3522b14bc0336bc01dd1d49fdba2cda7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+18481b65f318e0b4b20c0fc61340054701719d6c-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking darwins-challenge/moonlander-ast-rust against try#18481b65f318e0b4b20c0fc61340054701719d6c for pr-62507
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-62507/worker-6/try#18481b65f318e0b4b20c0fc61340054701719d6c:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-62507/sources/try#18481b65f318e0b4b20c0fc61340054701719d6c/gh/darwins-challenge/moonlander-ast-rust:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+18481b65f318e0b4b20c0fc61340054701719d6c-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] e0ab1fac17ad8a9bff61890b57dd7a7eacaa37d2230fcbaa0cac201acdd1413c
[INFO] running `"docker" "start" "-a" "e0ab1fac17ad8a9bff61890b57dd7a7eacaa37d2230fcbaa0cac201acdd1413c"`
[INFO] [stderr]     Checking ast v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] error: `RustcEncodable` is unstable
[INFO] [stderr]    --> src/darwin/evolve.rs:133:16
[INFO] [stderr]     |
[INFO] [stderr] 133 | #[derive(Clone,RustcEncodable)]
[INFO] [stderr]     |                ^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[deny(crater_run)] on by default
[INFO] [stderr] 
[INFO] [stderr] error: `RustcEncodable` is unstable
[INFO] [stderr]   --> src/data.rs:13:21
[INFO] [stderr]    |
[INFO] [stderr] 13 | #[derive(Copy,Clone,RustcEncodable)]
[INFO] [stderr]    |                     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: `RustcEncodable` is unstable
[INFO] [stderr]   --> src/serialize.rs:16:16
[INFO] [stderr]    |
[INFO] [stderr] 16 | #[derive(Clone,RustcEncodable)]
[INFO] [stderr]    |                ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: `RustcEncodable` is unstable
[INFO] [stderr]   --> src/serialize.rs:83:10
[INFO] [stderr]    |
[INFO] [stderr] 83 | #[derive(RustcEncodable)]
[INFO] [stderr]    |          ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: `RustcEncodable` is unstable
[INFO] [stderr]   --> src/structure.rs:30:31
[INFO] [stderr]    |
[INFO] [stderr] 30 | #[derive(Debug,RustcDecodable,RustcEncodable,Clone,PartialEq)]
[INFO] [stderr]    |                               ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: `RustcDecodable` is unstable
[INFO] [stderr]   --> src/structure.rs:30:16
[INFO] [stderr]    |
[INFO] [stderr] 30 | #[derive(Debug,RustcDecodable,RustcEncodable,Clone,PartialEq)]
[INFO] [stderr]    |                ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: `RustcEncodable` is unstable
[INFO] [stderr]   --> src/structure.rs:70:31
[INFO] [stderr]    |
[INFO] [stderr] 70 | #[derive(Debug,RustcDecodable,RustcEncodable,Clone,PartialEq)]
[INFO] [stderr]    |                               ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: `RustcDecodable` is unstable
[INFO] [stderr]   --> src/structure.rs:70:16
[INFO] [stderr]    |
[INFO] [stderr] 70 | #[derive(Debug,RustcDecodable,RustcEncodable,Clone,PartialEq)]
[INFO] [stderr]    |                ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: `RustcEncodable` is unstable
[INFO] [stderr]    --> src/structure.rs:121:31
[INFO] [stderr]     |
[INFO] [stderr] 121 | #[derive(Debug,RustcDecodable,RustcEncodable,Clone,PartialEq)]
[INFO] [stderr]     |                               ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: `RustcDecodable` is unstable
[INFO] [stderr]    --> src/structure.rs:121:16
[INFO] [stderr]     |
[INFO] [stderr] 121 | #[derive(Debug,RustcDecodable,RustcEncodable,Clone,PartialEq)]
[INFO] [stderr]     |                ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: `RustcEncodable` is unstable
[INFO] [stderr]    --> src/structure.rs:157:31
[INFO] [stderr]     |
[INFO] [stderr] 157 | #[derive(Debug,RustcDecodable,RustcEncodable,Clone,PartialEq,Copy)]
[INFO] [stderr]     |                               ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: `RustcDecodable` is unstable
[INFO] [stderr]    --> src/structure.rs:157:16
[INFO] [stderr]     |
[INFO] [stderr] 157 | #[derive(Debug,RustcDecodable,RustcEncodable,Clone,PartialEq,Copy)]
[INFO] [stderr]     |                ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: `RustcEncodable` is unstable
[INFO] [stderr]    --> src/structure.rs:193:31
[INFO] [stderr]     |
[INFO] [stderr] 193 | #[derive(Debug,RustcDecodable,RustcEncodable,Clone,PartialEq,Copy)]
[INFO] [stderr]     |                               ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: `RustcDecodable` is unstable
[INFO] [stderr]    --> src/structure.rs:193:16
[INFO] [stderr]     |
[INFO] [stderr] 193 | #[derive(Debug,RustcDecodable,RustcEncodable,Clone,PartialEq,Copy)]
[INFO] [stderr]     |                ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/copy.rs:16:29
[INFO] [stderr]    |
[INFO] [stderr] 16 |     fn copy(&self, copier: &Copier) -> Self;
[INFO] [stderr]    |                             ^^^^^^ help: use `dyn`: `dyn Copier`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/copy.rs:20:29
[INFO] [stderr]    |
[INFO] [stderr] 20 |     fn copy(&self, copier: &Copier) -> Self {
[INFO] [stderr]    |                             ^^^^^^ help: use `dyn`: `dyn Copier`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/copy.rs:26:29
[INFO] [stderr]    |
[INFO] [stderr] 26 |     fn copy(&self, copier: &Copier) -> Self {
[INFO] [stderr]    |                             ^^^^^^ help: use `dyn`: `dyn Copier`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/copy.rs:32:29
[INFO] [stderr]    |
[INFO] [stderr] 32 |     fn copy(&self, copier: &Copier) -> Self {
[INFO] [stderr]    |                             ^^^^^^ help: use `dyn`: `dyn Copier`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/copy.rs:38:29
[INFO] [stderr]    |
[INFO] [stderr] 38 |     fn copy(&self, copier: &Copier) -> Self {
[INFO] [stderr]    |                             ^^^^^^ help: use `dyn`: `dyn Copier`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/copy.rs:44:29
[INFO] [stderr]    |
[INFO] [stderr] 44 |     fn copy(&self, copier: &Copier) -> Self {
[INFO] [stderr]    |                             ^^^^^^ help: use `dyn`: `dyn Copier`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/copy.rs:123:26
[INFO] [stderr]     |
[INFO] [stderr] 123 | fn copy_program(copier: &Copier, program: &Program) -> Program {
[INFO] [stderr]     |                          ^^^^^^ help: use `dyn`: `dyn Copier`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/copy.rs:130:29
[INFO] [stderr]     |
[INFO] [stderr] 130 | fn copy_expression(copier: &Copier, expression: &Expression) -> Expression {
[INFO] [stderr]     |                             ^^^^^^ help: use `dyn`: `dyn Copier`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/copy.rs:141:28
[INFO] [stderr]     |
[INFO] [stderr] 141 | fn copy_condition(copier: &Copier, condition: &Condition) -> Condition {
[INFO] [stderr]     |                            ^^^^^^ help: use `dyn`: `dyn Copier`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/copy.rs:155:20
[INFO] [stderr]     |
[INFO] [stderr] 155 | fn copy_sensor(_: &Copier, sensor: &Sensor) -> Sensor {
[INFO] [stderr]     |                    ^^^^^^ help: use `dyn`: `dyn Copier`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/copy.rs:159:21
[INFO] [stderr]     |
[INFO] [stderr] 159 | fn copy_command(_: &Copier, command: &Command) -> Command {
[INFO] [stderr]     |                     ^^^^^^ help: use `dyn`: `dyn Copier`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/serialize.rs:37:32
[INFO] [stderr]    |
[INFO] [stderr] 37 |     pub fn save(&self, w: &mut Write) -> Result<(), Box<Error>> {
[INFO] [stderr]    |                                ^^^^^ help: use `dyn`: `dyn Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/serialize.rs:37:57
[INFO] [stderr]    |
[INFO] [stderr] 37 |     pub fn save(&self, w: &mut Write) -> Result<(), Box<Error>> {
[INFO] [stderr]    |                                                         ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/serialize.rs:43:60
[INFO] [stderr]    |
[INFO] [stderr] 43 |     pub fn save_file(&self, path: &Path) -> Result<(), Box<Error>> {
[INFO] [stderr]    |                                                            ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/serialize.rs:53:45
[INFO] [stderr]    |
[INFO] [stderr] 53 | pub fn writeln<T: Encodable>(x: &T, w: &mut Write) -> Result<(), Box<Error>> {
[INFO] [stderr]    |                                             ^^^^^ help: use `dyn`: `dyn Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/serialize.rs:53:70
[INFO] [stderr]    |
[INFO] [stderr] 53 | pub fn writeln<T: Encodable>(x: &T, w: &mut Write) -> Result<(), Box<Error>> {
[INFO] [stderr]    |                                                                      ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/serialize.rs:66:52
[INFO] [stderr]    |
[INFO] [stderr] 66 | pub fn save_source<P: Source>(program: &P, w: &mut Write) -> Result<(), Box<Error>> {
[INFO] [stderr]    |                                                    ^^^^^ help: use `dyn`: `dyn Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/serialize.rs:66:77
[INFO] [stderr]    |
[INFO] [stderr] 66 | pub fn save_source<P: Source>(program: &P, w: &mut Write) -> Result<(), Box<Error>> {
[INFO] [stderr]    |                                                                             ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/serialize.rs:72:80
[INFO] [stderr]    |
[INFO] [stderr] 72 | pub fn save_source_file<P: Source>(path: &Path, program: &P) -> Result<(), Box<Error>> {
[INFO] [stderr]    |                                                                                ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/serialize.rs:77:43
[INFO] [stderr]    |
[INFO] [stderr] 77 | pub fn save_score(score: &Scores, w: &mut Write) -> Result<(), Box<Error>> {
[INFO] [stderr]    |                                           ^^^^^ help: use `dyn`: `dyn Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/serialize.rs:77:68
[INFO] [stderr]    |
[INFO] [stderr] 77 | pub fn save_score(score: &Scores, w: &mut Write) -> Result<(), Box<Error>> {
[INFO] [stderr]    |                                                                    ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/visit.rs:20:38
[INFO] [stderr]    |
[INFO] [stderr] 20 |     fn visit(&'a self, visitor: &mut Visitor<'a>);
[INFO] [stderr]    |                                      ^^^^^^^^^^^ help: use `dyn`: `dyn Visitor<'a>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/visit.rs:24:35
[INFO] [stderr]    |
[INFO] [stderr] 24 |     fn visit(&'a self, visitor: &mut Visitor<'a>) {
[INFO] [stderr]    |                                      ^^^^^^^^^^^ help: use `dyn`: `dyn Visitor<'a>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/visit.rs:35:35
[INFO] [stderr]    |
[INFO] [stderr] 35 |     fn visit(&'a self, visitor: &mut Visitor<'a>) {
[INFO] [stderr]    |                                      ^^^^^^^^^^^ help: use `dyn`: `dyn Visitor<'a>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/visit.rs:53:35
[INFO] [stderr]    |
[INFO] [stderr] 53 |     fn visit(&'a self, visitor: &mut Visitor<'a>) {
[INFO] [stderr]    |                                      ^^^^^^^^^^^ help: use `dyn`: `dyn Visitor<'a>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/visit.rs:59:35
[INFO] [stderr]    |
[INFO] [stderr] 59 |     fn visit(&'a self, visitor: &mut Visitor<'a>) {
[INFO] [stderr]    |                                      ^^^^^^^^^^^ help: use `dyn`: `dyn Visitor<'a>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/visit.rs:74:35
[INFO] [stderr]    |
[INFO] [stderr] 74 |     fn visit(&'a self, visitor: &mut Visitor<'a>) {
[INFO] [stderr]    |                                      ^^^^^^^^^^^ help: use `dyn`: `dyn Visitor<'a>`
[INFO] [stderr] 
[INFO] [stderr] error: `RustcEncodable` is unstable
[INFO] [stderr]    --> src/darwin/evolve.rs:133:16
[INFO] [stderr]     |
[INFO] [stderr] 133 | #[derive(Clone,RustcEncodable)]
[INFO] [stderr]     |                ^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[deny(crater_run)] on by default
[INFO] [stderr] 
[INFO] [stderr] error: `RustcEncodable` is unstable
[INFO] [stderr]   --> src/data.rs:13:21
[INFO] [stderr]    |
[INFO] [stderr] 13 | #[derive(Copy,Clone,RustcEncodable)]
[INFO] [stderr]    |                     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: `RustcEncodable` is unstable
[INFO] [stderr]   --> src/serialize.rs:16:16
[INFO] [stderr]    |
[INFO] [stderr] 16 | #[derive(Clone,RustcEncodable)]
[INFO] [stderr]    |                ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: `RustcEncodable` is unstable
[INFO] [stderr]   --> src/serialize.rs:83:10
[INFO] [stderr]    |
[INFO] [stderr] 83 | #[derive(RustcEncodable)]
[INFO] [stderr]    |          ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: `RustcEncodable` is unstable
[INFO] [stderr]   --> src/structure.rs:30:31
[INFO] [stderr]    |
[INFO] [stderr] 30 | #[derive(Debug,RustcDecodable,RustcEncodable,Clone,PartialEq)]
[INFO] [stderr]    |                               ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: `RustcDecodable` is unstable
[INFO] [stderr]   --> src/structure.rs:30:16
[INFO] [stderr]    |
[INFO] [stderr] 30 | #[derive(Debug,RustcDecodable,RustcEncodable,Clone,PartialEq)]
[INFO] [stderr]    |                ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: `RustcEncodable` is unstable
[INFO] [stderr]   --> src/structure.rs:70:31
[INFO] [stderr]    |
[INFO] [stderr] 70 | #[derive(Debug,RustcDecodable,RustcEncodable,Clone,PartialEq)]
[INFO] [stderr]    |                               ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: `RustcDecodable` is unstable
[INFO] [stderr]   --> src/structure.rs:70:16
[INFO] [stderr]    |
[INFO] [stderr] 70 | #[derive(Debug,RustcDecodable,RustcEncodable,Clone,PartialEq)]
[INFO] [stderr]    |                ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: `RustcEncodable` is unstable
[INFO] [stderr]    --> src/structure.rs:121:31
[INFO] [stderr]     |
[INFO] [stderr] 121 | #[derive(Debug,RustcDecodable,RustcEncodable,Clone,PartialEq)]
[INFO] [stderr]     |                               ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: `RustcDecodable` is unstable
[INFO] [stderr]    --> src/structure.rs:121:16
[INFO] [stderr]     |
[INFO] [stderr] 121 | #[derive(Debug,RustcDecodable,RustcEncodable,Clone,PartialEq)]
[INFO] [stderr]     |                ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: `RustcEncodable` is unstable
[INFO] [stderr]    --> src/structure.rs:157:31
[INFO] [stderr]     |
[INFO] [stderr] 157 | #[derive(Debug,RustcDecodable,RustcEncodable,Clone,PartialEq,Copy)]
[INFO] [stderr]     |                               ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: `RustcDecodable` is unstable
[INFO] [stderr]    --> src/structure.rs:157:16
[INFO] [stderr]     |
[INFO] [stderr] 157 | #[derive(Debug,RustcDecodable,RustcEncodable,Clone,PartialEq,Copy)]
[INFO] [stderr]     |                ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: `RustcEncodable` is unstable
[INFO] [stderr]    --> src/structure.rs:193:31
[INFO] [stderr]     |
[INFO] [stderr] 193 | #[derive(Debug,RustcDecodable,RustcEncodable,Clone,PartialEq,Copy)]
[INFO] [stderr]     |                               ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: `RustcDecodable` is unstable
[INFO] [stderr]    --> src/structure.rs:193:16
[INFO] [stderr]     |
[INFO] [stderr] 193 | #[derive(Debug,RustcDecodable,RustcEncodable,Clone,PartialEq,Copy)]
[INFO] [stderr]     |                ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/copy.rs:16:29
[INFO] [stderr]    |
[INFO] [stderr] 16 |     fn copy(&self, copier: &Copier) -> Self;
[INFO] [stderr]    |                             ^^^^^^ help: use `dyn`: `dyn Copier`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/copy.rs:20:29
[INFO] [stderr]    |
[INFO] [stderr] 20 |     fn copy(&self, copier: &Copier) -> Self {
[INFO] [stderr]    |                             ^^^^^^ help: use `dyn`: `dyn Copier`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/copy.rs:26:29
[INFO] [stderr]    |
[INFO] [stderr] 26 |     fn copy(&self, copier: &Copier) -> Self {
[INFO] [stderr]    |                             ^^^^^^ help: use `dyn`: `dyn Copier`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/copy.rs:32:29
[INFO] [stderr]    |
[INFO] [stderr] 32 |     fn copy(&self, copier: &Copier) -> Self {
[INFO] [stderr]    |                             ^^^^^^ help: use `dyn`: `dyn Copier`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/copy.rs:38:29
[INFO] [stderr]    |
[INFO] [stderr] 38 |     fn copy(&self, copier: &Copier) -> Self {
[INFO] [stderr]    |                             ^^^^^^ help: use `dyn`: `dyn Copier`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/copy.rs:44:29
[INFO] [stderr]    |
[INFO] [stderr] 44 |     fn copy(&self, copier: &Copier) -> Self {
[INFO] [stderr]    |                             ^^^^^^ help: use `dyn`: `dyn Copier`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/copy.rs:123:26
[INFO] [stderr]     |
[INFO] [stderr] 123 | fn copy_program(copier: &Copier, program: &Program) -> Program {
[INFO] [stderr]     |                          ^^^^^^ help: use `dyn`: `dyn Copier`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/copy.rs:130:29
[INFO] [stderr]     |
[INFO] [stderr] 130 | fn copy_expression(copier: &Copier, expression: &Expression) -> Expression {
[INFO] [stderr]     |                             ^^^^^^ help: use `dyn`: `dyn Copier`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/copy.rs:141:28
[INFO] [stderr]     |
[INFO] [stderr] 141 | fn copy_condition(copier: &Copier, condition: &Condition) -> Condition {
[INFO] [stderr]     |                            ^^^^^^ help: use `dyn`: `dyn Copier`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/copy.rs:155:20
[INFO] [stderr]     |
[INFO] [stderr] 155 | fn copy_sensor(_: &Copier, sensor: &Sensor) -> Sensor {
[INFO] [stderr]     |                    ^^^^^^ help: use `dyn`: `dyn Copier`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/copy.rs:159:21
[INFO] [stderr]     |
[INFO] [stderr] 159 | fn copy_command(_: &Copier, command: &Command) -> Command {
[INFO] [stderr]     |                     ^^^^^^ help: use `dyn`: `dyn Copier`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/serialize.rs:37:32
[INFO] [stderr]    |
[INFO] [stderr] 37 |     pub fn save(&self, w: &mut Write) -> Result<(), Box<Error>> {
[INFO] [stderr]    |                                ^^^^^ help: use `dyn`: `dyn Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/serialize.rs:37:57
[INFO] [stderr]    |
[INFO] [stderr] 37 |     pub fn save(&self, w: &mut Write) -> Result<(), Box<Error>> {
[INFO] [stderr]    |                                                         ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/serialize.rs:43:60
[INFO] [stderr]    |
[INFO] [stderr] 43 |     pub fn save_file(&self, path: &Path) -> Result<(), Box<Error>> {
[INFO] [stderr]    |                                                            ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/serialize.rs:53:45
[INFO] [stderr]    |
[INFO] [stderr] 53 | pub fn writeln<T: Encodable>(x: &T, w: &mut Write) -> Result<(), Box<Error>> {
[INFO] [stderr]    |                                             ^^^^^ help: use `dyn`: `dyn Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/serialize.rs:53:70
[INFO] [stderr]    |
[INFO] [stderr] 53 | pub fn writeln<T: Encodable>(x: &T, w: &mut Write) -> Result<(), Box<Error>> {
[INFO] [stderr]    |                                                                      ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/serialize.rs:66:52
[INFO] [stderr]    |
[INFO] [stderr] 66 | pub fn save_source<P: Source>(program: &P, w: &mut Write) -> Result<(), Box<Error>> {
[INFO] [stderr]    |                                                    ^^^^^ help: use `dyn`: `dyn Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/serialize.rs:66:77
[INFO] [stderr]    |
[INFO] [stderr] 66 | pub fn save_source<P: Source>(program: &P, w: &mut Write) -> Result<(), Box<Error>> {
[INFO] [stderr]    |                                                                             ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/serialize.rs:72:80
[INFO] [stderr]    |
[INFO] [stderr] 72 | pub fn save_source_file<P: Source>(path: &Path, program: &P) -> Result<(), Box<Error>> {
[INFO] [stderr]    |                                                                                ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/serialize.rs:77:43
[INFO] [stderr]    |
[INFO] [stderr] 77 | pub fn save_score(score: &Scores, w: &mut Write) -> Result<(), Box<Error>> {
[INFO] [stderr]    |                                           ^^^^^ help: use `dyn`: `dyn Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/serialize.rs:77:68
[INFO] [stderr]    |
[INFO] [stderr] 77 | pub fn save_score(score: &Scores, w: &mut Write) -> Result<(), Box<Error>> {
[INFO] [stderr]    |                                                                    ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/visit.rs:20:38
[INFO] [stderr]    |
[INFO] [stderr] 20 |     fn visit(&'a self, visitor: &mut Visitor<'a>);
[INFO] [stderr]    |                                      ^^^^^^^^^^^ help: use `dyn`: `dyn Visitor<'a>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/visit.rs:24:35
[INFO] [stderr]    |
[INFO] [stderr] 24 |     fn visit(&'a self, visitor: &mut Visitor<'a>) {
[INFO] [stderr]    |                                      ^^^^^^^^^^^ help: use `dyn`: `dyn Visitor<'a>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/visit.rs:35:35
[INFO] [stderr]    |
[INFO] [stderr] 35 |     fn visit(&'a self, visitor: &mut Visitor<'a>) {
[INFO] [stderr]    |                                      ^^^^^^^^^^^ help: use `dyn`: `dyn Visitor<'a>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/visit.rs:53:35
[INFO] [stderr]    |
[INFO] [stderr] 53 |     fn visit(&'a self, visitor: &mut Visitor<'a>) {
[INFO] [stderr]    |                                      ^^^^^^^^^^^ help: use `dyn`: `dyn Visitor<'a>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/visit.rs:59:35
[INFO] [stderr]    |
[INFO] [stderr] 59 |     fn visit(&'a self, visitor: &mut Visitor<'a>) {
[INFO] [stderr]    |                                      ^^^^^^^^^^^ help: use `dyn`: `dyn Visitor<'a>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/visit.rs:74:35
[INFO] [stderr]    |
[INFO] [stderr] 74 |     fn visit(&'a self, visitor: &mut Visitor<'a>) {
[INFO] [stderr]    |                                      ^^^^^^^^^^^ help: use `dyn`: `dyn Visitor<'a>`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 14 previous errors
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `ast`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: aborting due to 14 previous errors
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `ast`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "e0ab1fac17ad8a9bff61890b57dd7a7eacaa37d2230fcbaa0cac201acdd1413c"`
[INFO] running `"docker" "rm" "-f" "e0ab1fac17ad8a9bff61890b57dd7a7eacaa37d2230fcbaa0cac201acdd1413c"`
[INFO] [stdout] e0ab1fac17ad8a9bff61890b57dd7a7eacaa37d2230fcbaa0cac201acdd1413c