[INFO] cloning repository https://github.com/darwins-challenge/moonlander-ast-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/darwins-challenge/moonlander-ast-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdarwins-challenge%2Fmoonlander-ast-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdarwins-challenge%2Fmoonlander-ast-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ea69bee6ca7132db6b057df2a46fff2438c089d3
[INFO] checking darwins-challenge/moonlander-ast-rust against try#8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8 for pr-82565
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdarwins-challenge%2Fmoonlander-ast-rust" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/darwins-challenge/moonlander-ast-rust on toolchain 8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/darwins-challenge/moonlander-ast-rust
[INFO] finished tweaking git repo https://github.com/darwins-challenge/moonlander-ast-rust
[INFO] tweaked toml for git repo https://github.com/darwins-challenge/moonlander-ast-rust written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/darwins-challenge/moonlander-ast-rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] error: the lock file /workspace/builds/worker-8/source/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] [stderr] If you want to try to generate the lock file without accessing the network, use the --offline flag.
[INFO] the lockfile is outdated, regenerating it
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded env_logger v0.8.3
[INFO] [stderr]   Downloaded humantime v2.1.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 27a16fcaf7c546d8fceba30a88ce4f44ff99e8a888c55a7c795e99fe2d56c39d
[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" "27a16fcaf7c546d8fceba30a88ce4f44ff99e8a888c55a7c795e99fe2d56c39d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "27a16fcaf7c546d8fceba30a88ce4f44ff99e8a888c55a7c795e99fe2d56c39d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "27a16fcaf7c546d8fceba30a88ce4f44ff99e8a888c55a7c795e99fe2d56c39d", kill_on_drop: false }`
[INFO] [stdout] 27a16fcaf7c546d8fceba30a88ce4f44ff99e8a888c55a7c795e99fe2d56c39d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 586779816a98cfa0c183fcae06830182d4b115ec241c1cb896fb62ff84e409ba
[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" "586779816a98cfa0c183fcae06830182d4b115ec241c1cb896fb62ff84e409ba", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.89
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking termcolor v1.1.2
[INFO] [stderr]     Checking log v0.4.14
[INFO] [stderr]     Checking aho-corasick v0.7.15
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking regex v1.4.5
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]     Checking env_logger v0.8.3
[INFO] [stderr]     Checking ast v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/copy.rs:16:29
[INFO] [stdout]    |
[INFO] [stdout] 16 |     fn copy(&self, copier: &Copier) -> Self;
[INFO] [stdout]    |                             ^^^^^^ help: use `dyn`: `dyn Copier`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/copy.rs:20:29
[INFO] [stdout]    |
[INFO] [stdout] 20 |     fn copy(&self, copier: &Copier) -> Self {
[INFO] [stdout]    |                             ^^^^^^ help: use `dyn`: `dyn Copier`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/copy.rs:26:29
[INFO] [stdout]    |
[INFO] [stdout] 26 |     fn copy(&self, copier: &Copier) -> Self {
[INFO] [stdout]    |                             ^^^^^^ help: use `dyn`: `dyn Copier`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/copy.rs:32:29
[INFO] [stdout]    |
[INFO] [stdout] 32 |     fn copy(&self, copier: &Copier) -> Self {
[INFO] [stdout]    |                             ^^^^^^ help: use `dyn`: `dyn Copier`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/copy.rs:38:29
[INFO] [stdout]    |
[INFO] [stdout] 38 |     fn copy(&self, copier: &Copier) -> Self {
[INFO] [stdout]    |                             ^^^^^^ help: use `dyn`: `dyn Copier`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/copy.rs:44:29
[INFO] [stdout]    |
[INFO] [stdout] 44 |     fn copy(&self, copier: &Copier) -> Self {
[INFO] [stdout]    |                             ^^^^^^ help: use `dyn`: `dyn Copier`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/copy.rs:123:26
[INFO] [stdout]     |
[INFO] [stdout] 123 | fn copy_program(copier: &Copier, program: &Program) -> Program {
[INFO] [stdout]     |                          ^^^^^^ help: use `dyn`: `dyn Copier`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/copy.rs:130:29
[INFO] [stdout]     |
[INFO] [stdout] 130 | fn copy_expression(copier: &Copier, expression: &Expression) -> Expression {
[INFO] [stdout]     |                             ^^^^^^ help: use `dyn`: `dyn Copier`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/copy.rs:141:28
[INFO] [stdout]     |
[INFO] [stdout] 141 | fn copy_condition(copier: &Copier, condition: &Condition) -> Condition {
[INFO] [stdout]     |                            ^^^^^^ help: use `dyn`: `dyn Copier`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/copy.rs:155:20
[INFO] [stdout]     |
[INFO] [stdout] 155 | fn copy_sensor(_: &Copier, sensor: &Sensor) -> Sensor {
[INFO] [stdout]     |                    ^^^^^^ help: use `dyn`: `dyn Copier`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/copy.rs:159:21
[INFO] [stdout]     |
[INFO] [stdout] 159 | fn copy_command(_: &Copier, command: &Command) -> Command {
[INFO] [stdout]     |                     ^^^^^^ help: use `dyn`: `dyn Copier`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/serialize.rs:38:23
[INFO] [stdout]    |
[INFO] [stdout] 38 |         let encoded = try!(json::encode(&self.states));
[INFO] [stdout]    |                       ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/serialize.rs:39:9
[INFO] [stdout]    |
[INFO] [stdout] 39 |         try!(w.write_all(&encoded.as_bytes()));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serialize.rs:37:32
[INFO] [stdout]    |
[INFO] [stdout] 37 |     pub fn save(&self, w: &mut Write) -> Result<(), Box<Error>> {
[INFO] [stdout]    |                                ^^^^^ help: use `dyn`: `dyn Write`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serialize.rs:37:57
[INFO] [stdout]    |
[INFO] [stdout] 37 |     pub fn save(&self, w: &mut Write) -> Result<(), Box<Error>> {
[INFO] [stdout]    |                                                         ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/serialize.rs:44:21
[INFO] [stdout]    |
[INFO] [stdout] 44 |         let mut f = try!(File::create(path));
[INFO] [stdout]    |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serialize.rs:43:60
[INFO] [stdout]    |
[INFO] [stdout] 43 |     pub fn save_file(&self, path: &Path) -> Result<(), Box<Error>> {
[INFO] [stdout]    |                                                            ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/serialize.rs:54:19
[INFO] [stdout]    |
[INFO] [stdout] 54 |     let encoded = try!(json::encode(&x));
[INFO] [stdout]    |                   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/serialize.rs:55:5
[INFO] [stdout]    |
[INFO] [stdout] 55 |     try!(w.write_all(&encoded.as_bytes()));
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/serialize.rs:56:5
[INFO] [stdout]    |
[INFO] [stdout] 56 |     try!(w.write(&[10]));
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serialize.rs:53:45
[INFO] [stdout]    |
[INFO] [stdout] 53 | pub fn writeln<T: Encodable>(x: &T, w: &mut Write) -> Result<(), Box<Error>> {
[INFO] [stdout]    |                                             ^^^^^ help: use `dyn`: `dyn Write`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serialize.rs:53:70
[INFO] [stdout]    |
[INFO] [stdout] 53 | pub fn writeln<T: Encodable>(x: &T, w: &mut Write) -> Result<(), Box<Error>> {
[INFO] [stdout]    |                                                                      ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/serialize.rs:68:5
[INFO] [stdout]    |
[INFO] [stdout] 68 |     try!(w.write_all(&program.source().as_bytes()));
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serialize.rs:66:52
[INFO] [stdout]    |
[INFO] [stdout] 66 | pub fn save_source<P: Source>(program: &P, w: &mut Write) -> Result<(), Box<Error>> {
[INFO] [stdout]    |                                                    ^^^^^ help: use `dyn`: `dyn Write`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serialize.rs:66:77
[INFO] [stdout]    |
[INFO] [stdout] 66 | pub fn save_source<P: Source>(program: &P, w: &mut Write) -> Result<(), Box<Error>> {
[INFO] [stdout]    |                                                                             ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/serialize.rs:73:17
[INFO] [stdout]    |
[INFO] [stdout] 73 |     let mut f = try!(File::create(path));
[INFO] [stdout]    |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serialize.rs:72:80
[INFO] [stdout]    |
[INFO] [stdout] 72 | pub fn save_source_file<P: Source>(path: &Path, program: &P) -> Result<(), Box<Error>> {
[INFO] [stdout]    |                                                                                ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/serialize.rs:78:19
[INFO] [stdout]    |
[INFO] [stdout] 78 |     let encoded = try!(json::encode(&score));
[INFO] [stdout]    |                   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/serialize.rs:79:5
[INFO] [stdout]    |
[INFO] [stdout] 79 |     try!(w.write_all(&encoded.as_bytes()));
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serialize.rs:77:43
[INFO] [stdout]    |
[INFO] [stdout] 77 | pub fn save_score(score: &Scores, w: &mut Write) -> Result<(), Box<Error>> {
[INFO] [stdout]    |                                           ^^^^^ help: use `dyn`: `dyn Write`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serialize.rs:77:68
[INFO] [stdout]    |
[INFO] [stdout] 77 | pub fn save_score(score: &Scores, w: &mut Write) -> Result<(), Box<Error>> {
[INFO] [stdout]    |                                                                    ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/visit.rs:20:38
[INFO] [stdout]    |
[INFO] [stdout] 20 |     fn visit(&'a self, visitor: &mut Visitor<'a>);
[INFO] [stdout]    |                                      ^^^^^^^^^^^ help: use `dyn`: `dyn Visitor<'a>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/visit.rs:24:35
[INFO] [stdout]    |
[INFO] [stdout] 24 |     fn visit(&'a self, visitor: &mut Visitor<'a>) {
[INFO] [stdout]    |                                      ^^^^^^^^^^^ help: use `dyn`: `dyn Visitor<'a>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/visit.rs:35:35
[INFO] [stdout]    |
[INFO] [stdout] 35 |     fn visit(&'a self, visitor: &mut Visitor<'a>) {
[INFO] [stdout]    |                                      ^^^^^^^^^^^ help: use `dyn`: `dyn Visitor<'a>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/visit.rs:53:35
[INFO] [stdout]    |
[INFO] [stdout] 53 |     fn visit(&'a self, visitor: &mut Visitor<'a>) {
[INFO] [stdout]    |                                      ^^^^^^^^^^^ help: use `dyn`: `dyn Visitor<'a>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/visit.rs:59:35
[INFO] [stdout]    |
[INFO] [stdout] 59 |     fn visit(&'a self, visitor: &mut Visitor<'a>) {
[INFO] [stdout]    |                                      ^^^^^^^^^^^ help: use `dyn`: `dyn Visitor<'a>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/visit.rs:74:35
[INFO] [stdout]    |
[INFO] [stdout] 74 |     fn visit(&'a self, visitor: &mut Visitor<'a>) {
[INFO] [stdout]    |                                      ^^^^^^^^^^^ help: use `dyn`: `dyn Visitor<'a>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/copy.rs:16:29
[INFO] [stdout]    |
[INFO] [stdout] 16 |     fn copy(&self, copier: &Copier) -> Self;
[INFO] [stdout]    |                             ^^^^^^ help: use `dyn`: `dyn Copier`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/copy.rs:20:29
[INFO] [stdout]    |
[INFO] [stdout] 20 |     fn copy(&self, copier: &Copier) -> Self {
[INFO] [stdout]    |                             ^^^^^^ help: use `dyn`: `dyn Copier`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/copy.rs:26:29
[INFO] [stdout]    |
[INFO] [stdout] 26 |     fn copy(&self, copier: &Copier) -> Self {
[INFO] [stdout]    |                             ^^^^^^ help: use `dyn`: `dyn Copier`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/copy.rs:32:29
[INFO] [stdout]    |
[INFO] [stdout] 32 |     fn copy(&self, copier: &Copier) -> Self {
[INFO] [stdout]    |                             ^^^^^^ help: use `dyn`: `dyn Copier`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/copy.rs:38:29
[INFO] [stdout]    |
[INFO] [stdout] 38 |     fn copy(&self, copier: &Copier) -> Self {
[INFO] [stdout]    |                             ^^^^^^ help: use `dyn`: `dyn Copier`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/copy.rs:44:29
[INFO] [stdout]    |
[INFO] [stdout] 44 |     fn copy(&self, copier: &Copier) -> Self {
[INFO] [stdout]    |                             ^^^^^^ help: use `dyn`: `dyn Copier`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/copy.rs:123:26
[INFO] [stdout]     |
[INFO] [stdout] 123 | fn copy_program(copier: &Copier, program: &Program) -> Program {
[INFO] [stdout]     |                          ^^^^^^ help: use `dyn`: `dyn Copier`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/copy.rs:130:29
[INFO] [stdout]     |
[INFO] [stdout] 130 | fn copy_expression(copier: &Copier, expression: &Expression) -> Expression {
[INFO] [stdout]     |                             ^^^^^^ help: use `dyn`: `dyn Copier`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/copy.rs:141:28
[INFO] [stdout]     |
[INFO] [stdout] 141 | fn copy_condition(copier: &Copier, condition: &Condition) -> Condition {
[INFO] [stdout]     |                            ^^^^^^ help: use `dyn`: `dyn Copier`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/copy.rs:155:20
[INFO] [stdout]     |
[INFO] [stdout] 155 | fn copy_sensor(_: &Copier, sensor: &Sensor) -> Sensor {
[INFO] [stdout]     |                    ^^^^^^ help: use `dyn`: `dyn Copier`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/copy.rs:159:21
[INFO] [stdout]     |
[INFO] [stdout] 159 | fn copy_command(_: &Copier, command: &Command) -> Command {
[INFO] [stdout]     |                     ^^^^^^ help: use `dyn`: `dyn Copier`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/serialize.rs:38:23
[INFO] [stdout]    |
[INFO] [stdout] 38 |         let encoded = try!(json::encode(&self.states));
[INFO] [stdout]    |                       ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/serialize.rs:39:9
[INFO] [stdout]    |
[INFO] [stdout] 39 |         try!(w.write_all(&encoded.as_bytes()));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serialize.rs:37:32
[INFO] [stdout]    |
[INFO] [stdout] 37 |     pub fn save(&self, w: &mut Write) -> Result<(), Box<Error>> {
[INFO] [stdout]    |                                ^^^^^ help: use `dyn`: `dyn Write`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serialize.rs:37:57
[INFO] [stdout]    |
[INFO] [stdout] 37 |     pub fn save(&self, w: &mut Write) -> Result<(), Box<Error>> {
[INFO] [stdout]    |                                                         ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/serialize.rs:44:21
[INFO] [stdout]    |
[INFO] [stdout] 44 |         let mut f = try!(File::create(path));
[INFO] [stdout]    |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serialize.rs:43:60
[INFO] [stdout]    |
[INFO] [stdout] 43 |     pub fn save_file(&self, path: &Path) -> Result<(), Box<Error>> {
[INFO] [stdout]    |                                                            ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/serialize.rs:54:19
[INFO] [stdout]    |
[INFO] [stdout] 54 |     let encoded = try!(json::encode(&x));
[INFO] [stdout]    |                   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/serialize.rs:55:5
[INFO] [stdout]    |
[INFO] [stdout] 55 |     try!(w.write_all(&encoded.as_bytes()));
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/serialize.rs:56:5
[INFO] [stdout]    |
[INFO] [stdout] 56 |     try!(w.write(&[10]));
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serialize.rs:53:45
[INFO] [stdout]    |
[INFO] [stdout] 53 | pub fn writeln<T: Encodable>(x: &T, w: &mut Write) -> Result<(), Box<Error>> {
[INFO] [stdout]    |                                             ^^^^^ help: use `dyn`: `dyn Write`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serialize.rs:53:70
[INFO] [stdout]    |
[INFO] [stdout] 53 | pub fn writeln<T: Encodable>(x: &T, w: &mut Write) -> Result<(), Box<Error>> {
[INFO] [stdout]    |                                                                      ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/serialize.rs:68:5
[INFO] [stdout]    |
[INFO] [stdout] 68 |     try!(w.write_all(&program.source().as_bytes()));
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serialize.rs:66:52
[INFO] [stdout]    |
[INFO] [stdout] 66 | pub fn save_source<P: Source>(program: &P, w: &mut Write) -> Result<(), Box<Error>> {
[INFO] [stdout]    |                                                    ^^^^^ help: use `dyn`: `dyn Write`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serialize.rs:66:77
[INFO] [stdout]    |
[INFO] [stdout] 66 | pub fn save_source<P: Source>(program: &P, w: &mut Write) -> Result<(), Box<Error>> {
[INFO] [stdout]    |                                                                             ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/serialize.rs:73:17
[INFO] [stdout]    |
[INFO] [stdout] 73 |     let mut f = try!(File::create(path));
[INFO] [stdout]    |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serialize.rs:72:80
[INFO] [stdout]    |
[INFO] [stdout] 72 | pub fn save_source_file<P: Source>(path: &Path, program: &P) -> Result<(), Box<Error>> {
[INFO] [stdout]    |                                                                                ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/serialize.rs:78:19
[INFO] [stdout]    |
[INFO] [stdout] 78 |     let encoded = try!(json::encode(&score));
[INFO] [stdout]    |                   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/serialize.rs:79:5
[INFO] [stdout]    |
[INFO] [stdout] 79 |     try!(w.write_all(&encoded.as_bytes()));
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serialize.rs:77:43
[INFO] [stdout]    |
[INFO] [stdout] 77 | pub fn save_score(score: &Scores, w: &mut Write) -> Result<(), Box<Error>> {
[INFO] [stdout]    |                                           ^^^^^ help: use `dyn`: `dyn Write`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serialize.rs:77:68
[INFO] [stdout]    |
[INFO] [stdout] 77 | pub fn save_score(score: &Scores, w: &mut Write) -> Result<(), Box<Error>> {
[INFO] [stdout]    |                                                                    ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/visit.rs:20:38
[INFO] [stdout]    |
[INFO] [stdout] 20 |     fn visit(&'a self, visitor: &mut Visitor<'a>);
[INFO] [stdout]    |                                      ^^^^^^^^^^^ help: use `dyn`: `dyn Visitor<'a>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/visit.rs:24:35
[INFO] [stdout]    |
[INFO] [stdout] 24 |     fn visit(&'a self, visitor: &mut Visitor<'a>) {
[INFO] [stdout]    |                                      ^^^^^^^^^^^ help: use `dyn`: `dyn Visitor<'a>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/visit.rs:35:35
[INFO] [stdout]    |
[INFO] [stdout] 35 |     fn visit(&'a self, visitor: &mut Visitor<'a>) {
[INFO] [stdout]    |                                      ^^^^^^^^^^^ help: use `dyn`: `dyn Visitor<'a>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/visit.rs:53:35
[INFO] [stdout]    |
[INFO] [stdout] 53 |     fn visit(&'a self, visitor: &mut Visitor<'a>) {
[INFO] [stdout]    |                                      ^^^^^^^^^^^ help: use `dyn`: `dyn Visitor<'a>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/visit.rs:59:35
[INFO] [stdout]    |
[INFO] [stdout] 59 |     fn visit(&'a self, visitor: &mut Visitor<'a>) {
[INFO] [stdout]    |                                      ^^^^^^^^^^^ help: use `dyn`: `dyn Visitor<'a>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/visit.rs:74:35
[INFO] [stdout]    |
[INFO] [stdout] 74 |     fn visit(&'a self, visitor: &mut Visitor<'a>) {
[INFO] [stdout]    |                                      ^^^^^^^^^^^ help: use `dyn`: `dyn Visitor<'a>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `best_program`
[INFO] [stdout]    --> src/darwin/evolve.rs:285:5
[INFO] [stdout]     |
[INFO] [stdout] 285 |     best_program: Option<P>,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `best_program`
[INFO] [stdout]    --> src/darwin/evolve.rs:285:5
[INFO] [stdout]     |
[INFO] [stdout] 285 |     best_program: Option<P>,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `best_generation`
[INFO] [stdout]    --> src/darwin/evolve.rs:287:5
[INFO] [stdout]     |
[INFO] [stdout] 287 |     best_generation: u32
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `best_generation`
[INFO] [stdout]    --> src/darwin/evolve.rs:287:5
[INFO] [stdout]     |
[INFO] [stdout] 287 |     best_generation: u32
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 39 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 39 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]  --> examples/generate.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #[macro_use]
[INFO] [stdout]   | ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::stdout`
[INFO] [stdout]  --> examples/simple-evolve.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use std::io::stdout;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `partial_max`, `partial_min`
[INFO] [stdout]   --> examples/simple-evolve.rs:18:24
[INFO] [stdout]    |
[INFO] [stdout] 18 | use ast::num::{square, partial_max, partial_min};
[INFO] [stdout]    |                        ^^^^^^^^^^^  ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> examples/json_decode.rs:17:61
[INFO] [stdout]    |
[INFO] [stdout] 17 |         Err(why) => panic!("couldn't open {}: {}", display, Error::description(&why)),
[INFO] [stdout]    |                                                             ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> examples/json_decode.rs:23:61
[INFO] [stdout]    |
[INFO] [stdout] 23 |         Err(why) => panic!("couldn't read {}: {}", display, Error::description(&why)),
[INFO] [stdout]    |                                                             ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `expect` found for unit type `()` in the current scope
[INFO] [stdout]   --> examples/simple-evolve.rs:96:24
[INFO] [stdout]    |
[INFO] [stdout] 96 |     env_logger::init().expect("Error initializing logger");
[INFO] [stdout]    |                        ^^^^^^ method not found in `()`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0599`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `ast`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "586779816a98cfa0c183fcae06830182d4b115ec241c1cb896fb62ff84e409ba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "586779816a98cfa0c183fcae06830182d4b115ec241c1cb896fb62ff84e409ba", kill_on_drop: false }`
[INFO] [stdout] 586779816a98cfa0c183fcae06830182d4b115ec241c1cb896fb62ff84e409ba