[INFO] fetching crate rvs 0.4.1...
[INFO] checking rvs-0.4.1 against try#f47dd4da3ae8c32c9e65d307bfe640b143e674df for pr-77526
[INFO] extracting crate rvs 0.4.1 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate rvs 0.4.1 on toolchain f47dd4da3ae8c32c9e65d307bfe640b143e674df
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rvs 0.4.1
[INFO] finished tweaking crates.io crate rvs 0.4.1
[INFO] tweaked toml for crates.io crate rvs 0.4.1 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] caf89ead6614c21d635d6df54db519474143bbd6db6b8b349c908da220ecf7a0
[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" "caf89ead6614c21d635d6df54db519474143bbd6db6b8b349c908da220ecf7a0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "caf89ead6614c21d635d6df54db519474143bbd6db6b8b349c908da220ecf7a0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "caf89ead6614c21d635d6df54db519474143bbd6db6b8b349c908da220ecf7a0", kill_on_drop: false }`
[INFO] [stdout] caf89ead6614c21d635d6df54db519474143bbd6db6b8b349c908da220ecf7a0
[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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b11ffcb5be89859e7e43399c81f70ce62b8b0499a0b2d0ad3344f06b41fac2a0
[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" "b11ffcb5be89859e7e43399c81f70ce62b8b0499a0b2d0ad3344f06b41fac2a0", kill_on_drop: false }`
[INFO] [stderr]    Compiling quote v0.3.15
[INFO] [stderr]     Checking linked-hash-map v0.5.3
[INFO] [stderr]    Compiling peg v0.5.7
[INFO] [stderr]    Compiling rvs-parser v0.4.0
[INFO] [stderr]     Checking rvs v0.4.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/error.rs:31:32
[INFO] [stdout]    |
[INFO] [stdout] 31 |     fn cause(&self) -> Option<&error::Error> {
[INFO] [stdout]    |                                ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[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/error.rs:78:32
[INFO] [stdout]    |
[INFO] [stdout] 78 |     fn cause(&self) -> Option<&error::Error> {
[INFO] [stdout]    |                                ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/transform/transform.rs:114:30
[INFO] [stdout]     |
[INFO] [stdout] 114 |     ) -> TransformResult<Box<Expr>> {
[INFO] [stdout]     |                              ^^^^ help: use `dyn`: `dyn Expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/transform/transform.rs:168:30
[INFO] [stdout]     |
[INFO] [stdout] 168 |     ) -> TransformResult<Box<Expr>> {
[INFO] [stdout]     |                              ^^^^ help: use `dyn`: `dyn Expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/transform/transform.rs:191:34
[INFO] [stdout]     |
[INFO] [stdout] 191 |     ) -> TransformResult<Vec<Box<Expr>>> {
[INFO] [stdout]     |                                  ^^^^ help: use `dyn`: `dyn Expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/transform/transform.rs:192:36
[INFO] [stdout]     |
[INFO] [stdout] 192 |         let mut arg_exprs: Vec<Box<Expr>> = Vec::new();
[INFO] [stdout]     |                                    ^^^^ help: use `dyn`: `dyn Expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/transform/transform.rs:206:30
[INFO] [stdout]     |
[INFO] [stdout] 206 |     ) -> TransformResult<Box<Expr>> {
[INFO] [stdout]     |                              ^^^^ help: use `dyn`: `dyn Expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/transform/transform.rs:208:35
[INFO] [stdout]     |
[INFO] [stdout] 208 |         let mut children: Vec<Box<Expr>> = Vec::new();
[INFO] [stdout]     |                                   ^^^^ help: use `dyn`: `dyn Expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/transform/transform.rs:256:30
[INFO] [stdout]     |
[INFO] [stdout] 256 |     ) -> TransformResult<Box<Expr>> {
[INFO] [stdout]     |                              ^^^^ help: use `dyn`: `dyn Expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/model/expr.rs:38:32
[INFO] [stdout]    |
[INFO] [stdout] 38 |     fn clone_box(&self) -> Box<Expr>;
[INFO] [stdout]    |                                ^^^^ help: use `dyn`: `dyn Expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/model/expr.rs:45:32
[INFO] [stdout]    |
[INFO] [stdout] 45 |     fn clone_box(&self) -> Box<Expr> {
[INFO] [stdout]    |                                ^^^^ help: use `dyn`: `dyn Expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/model/expr.rs:50:20
[INFO] [stdout]    |
[INFO] [stdout] 50 | impl Clone for Box<Expr> {
[INFO] [stdout]    |                    ^^^^ help: use `dyn`: `dyn Expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/model/expr.rs:51:28
[INFO] [stdout]    |
[INFO] [stdout] 51 |     fn clone(&self) -> Box<Expr> {
[INFO] [stdout]    |                            ^^^^ help: use `dyn`: `dyn Expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/model/variable.rs:9:15
[INFO] [stdout]   |
[INFO] [stdout] 9 |     expr: Box<Expr>,
[INFO] [stdout]   |               ^^^^ help: use `dyn`: `dyn Expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/model/variable.rs:17:26
[INFO] [stdout]    |
[INFO] [stdout] 17 |     pub fn new(expr: Box<Expr>, rng: CrateRng) -> Variable {
[INFO] [stdout]    |                          ^^^^ help: use `dyn`: `dyn Expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/model/variable.rs:21:37
[INFO] [stdout]    |
[INFO] [stdout] 21 |     pub fn clone_expr(&self) -> Box<Expr> {
[INFO] [stdout]    |                                     ^^^^ help: use `dyn`: `dyn Expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/types/operation.rs:12:20
[INFO] [stdout]    |
[INFO] [stdout] 12 |     operands: (Box<Expr>, Box<Expr>),
[INFO] [stdout]    |                    ^^^^ help: use `dyn`: `dyn Expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/types/operation.rs:12:31
[INFO] [stdout]    |
[INFO] [stdout] 12 |     operands: (Box<Expr>, Box<Expr>),
[INFO] [stdout]    |                               ^^^^ help: use `dyn`: `dyn Expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/types/operation.rs:20:18
[INFO] [stdout]    |
[INFO] [stdout] 20 |     operand: Box<Expr>,
[INFO] [stdout]    |                  ^^^^ help: use `dyn`: `dyn Expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/error.rs:31:32
[INFO] [stdout]    |
[INFO] [stdout] 31 |     fn cause(&self) -> Option<&error::Error> {
[INFO] [stdout]    |                                ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[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/types/operation.rs:24:23
[INFO] [stdout]    |
[INFO] [stdout] 24 |     pub fn new(l: Box<Expr>, operation: ast::BinaryOpcode, r: Box<Expr>) -> Binary {
[INFO] [stdout]    |                       ^^^^ help: use `dyn`: `dyn Expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/error.rs:78:32
[INFO] [stdout]    |
[INFO] [stdout] 78 |     fn cause(&self) -> Option<&error::Error> {
[INFO] [stdout]    |                                ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/transform/transform.rs:114:30
[INFO] [stdout]     |
[INFO] [stdout] 114 |     ) -> TransformResult<Box<Expr>> {
[INFO] [stdout]     |                              ^^^^ help: use `dyn`: `dyn Expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/transform/transform.rs:168:30
[INFO] [stdout]     |
[INFO] [stdout] 168 |     ) -> TransformResult<Box<Expr>> {
[INFO] [stdout]     |                              ^^^^ help: use `dyn`: `dyn Expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/types/operation.rs:24:67
[INFO] [stdout]    |
[INFO] [stdout] 24 |     pub fn new(l: Box<Expr>, operation: ast::BinaryOpcode, r: Box<Expr>) -> Binary {
[INFO] [stdout]    |                                                                   ^^^^ help: use `dyn`: `dyn Expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/transform/transform.rs:191:34
[INFO] [stdout]     |
[INFO] [stdout] 191 |     ) -> TransformResult<Vec<Box<Expr>>> {
[INFO] [stdout]     |                                  ^^^^ help: use `dyn`: `dyn Expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/transform/transform.rs:192:36
[INFO] [stdout]     |
[INFO] [stdout] 192 |         let mut arg_exprs: Vec<Box<Expr>> = Vec::new();
[INFO] [stdout]     |                                    ^^^^ help: use `dyn`: `dyn Expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/types/operation.rs:77:58
[INFO] [stdout]    |
[INFO] [stdout] 77 |     pub fn new(operation: ast::UnaryOpcode, operand: Box<Expr>) -> Unary {
[INFO] [stdout]    |                                                          ^^^^ help: use `dyn`: `dyn Expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/transform/transform.rs:206:30
[INFO] [stdout]     |
[INFO] [stdout] 206 |     ) -> TransformResult<Box<Expr>> {
[INFO] [stdout]     |                              ^^^^ help: use `dyn`: `dyn Expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/transform/transform.rs:208:35
[INFO] [stdout]     |
[INFO] [stdout] 208 |         let mut children: Vec<Box<Expr>> = Vec::new();
[INFO] [stdout]     |                                   ^^^^ help: use `dyn`: `dyn Expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/types/pattern.rs:9:23
[INFO] [stdout]   |
[INFO] [stdout] 9 |     children: Vec<Box<Expr>>,
[INFO] [stdout]   |                       ^^^^ help: use `dyn`: `dyn Expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/transform/transform.rs:256:30
[INFO] [stdout]     |
[INFO] [stdout] 256 |     ) -> TransformResult<Box<Expr>> {
[INFO] [stdout]     |                              ^^^^ help: use `dyn`: `dyn Expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/model/expr.rs:38:32
[INFO] [stdout]    |
[INFO] [stdout] 38 |     fn clone_box(&self) -> Box<Expr>;
[INFO] [stdout]    |                                ^^^^ help: use `dyn`: `dyn Expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/types/pattern.rs:14:34
[INFO] [stdout]    |
[INFO] [stdout] 14 |     pub fn new(children: Vec<Box<Expr>>) -> Pattern {
[INFO] [stdout]    |                                  ^^^^ help: use `dyn`: `dyn Expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/model/expr.rs:45:32
[INFO] [stdout]    |
[INFO] [stdout] 45 |     fn clone_box(&self) -> Box<Expr> {
[INFO] [stdout]    |                                ^^^^ help: use `dyn`: `dyn Expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/model/expr.rs:50:20
[INFO] [stdout]    |
[INFO] [stdout] 50 | impl Clone for Box<Expr> {
[INFO] [stdout]    |                    ^^^^ help: use `dyn`: `dyn Expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/model/expr.rs:51:28
[INFO] [stdout]    |
[INFO] [stdout] 51 |     fn clone(&self) -> Box<Expr> {
[INFO] [stdout]    |                            ^^^^ help: use `dyn`: `dyn Expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/types/sequence.rs:12:16
[INFO] [stdout]    |
[INFO] [stdout] 12 |     first: Box<Expr>,
[INFO] [stdout]    |                ^^^^ help: use `dyn`: `dyn Expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/model/variable.rs:9:15
[INFO] [stdout]   |
[INFO] [stdout] 9 |     expr: Box<Expr>,
[INFO] [stdout]   |               ^^^^ help: use `dyn`: `dyn Expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/model/variable.rs:17:26
[INFO] [stdout]    |
[INFO] [stdout] 17 |     pub fn new(expr: Box<Expr>, rng: CrateRng) -> Variable {
[INFO] [stdout]    |                          ^^^^ help: use `dyn`: `dyn Expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/types/sequence.rs:13:15
[INFO] [stdout]    |
[INFO] [stdout] 13 |     last: Box<Expr>,
[INFO] [stdout]    |               ^^^^ help: use `dyn`: `dyn Expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/model/variable.rs:21:37
[INFO] [stdout]    |
[INFO] [stdout] 21 |     pub fn clone_expr(&self) -> Box<Expr> {
[INFO] [stdout]    |                                     ^^^^ help: use `dyn`: `dyn Expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/types/operation.rs:12:20
[INFO] [stdout]    |
[INFO] [stdout] 12 |     operands: (Box<Expr>, Box<Expr>),
[INFO] [stdout]    |                    ^^^^ help: use `dyn`: `dyn Expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/types/sequence.rs:14:20
[INFO] [stdout]    |
[INFO] [stdout] 14 |     increment: Box<Expr>,
[INFO] [stdout]    |                    ^^^^ help: use `dyn`: `dyn Expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/types/operation.rs:12:31
[INFO] [stdout]    |
[INFO] [stdout] 12 |     operands: (Box<Expr>, Box<Expr>),
[INFO] [stdout]    |                               ^^^^ help: use `dyn`: `dyn Expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/types/operation.rs:20:18
[INFO] [stdout]    |
[INFO] [stdout] 20 |     operand: Box<Expr>,
[INFO] [stdout]    |                  ^^^^ help: use `dyn`: `dyn Expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/types/operation.rs:24:23
[INFO] [stdout]    |
[INFO] [stdout] 24 |     pub fn new(l: Box<Expr>, operation: ast::BinaryOpcode, r: Box<Expr>) -> Binary {
[INFO] [stdout]    |                       ^^^^ help: use `dyn`: `dyn Expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/types/sequence.rs:23:34
[INFO] [stdout]    |
[INFO] [stdout] 23 |     pub fn new(mut args: Vec<Box<Expr>>, rng: &mut CrateRng) -> Sequence {
[INFO] [stdout]    |                                  ^^^^ help: use `dyn`: `dyn Expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/types/operation.rs:24:67
[INFO] [stdout]    |
[INFO] [stdout] 24 |     pub fn new(l: Box<Expr>, operation: ast::BinaryOpcode, r: Box<Expr>) -> Binary {
[INFO] [stdout]    |                                                                   ^^^^ help: use `dyn`: `dyn Expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/types/operation.rs:77:58
[INFO] [stdout]    |
[INFO] [stdout] 77 |     pub fn new(operation: ast::UnaryOpcode, operand: Box<Expr>) -> Unary {
[INFO] [stdout]    |                                                          ^^^^ help: use `dyn`: `dyn Expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/types/sequence.rs:26:44
[INFO] [stdout]    |
[INFO] [stdout] 26 |         let (first, last, increment): (Box<Expr>, Box<Expr>, Box<Expr>) = match len {
[INFO] [stdout]    |                                            ^^^^ help: use `dyn`: `dyn Expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/types/pattern.rs:9:23
[INFO] [stdout]   |
[INFO] [stdout] 9 |     children: Vec<Box<Expr>>,
[INFO] [stdout]   |                       ^^^^ help: use `dyn`: `dyn Expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/types/pattern.rs:14:34
[INFO] [stdout]    |
[INFO] [stdout] 14 |     pub fn new(children: Vec<Box<Expr>>) -> Pattern {
[INFO] [stdout]    |                                  ^^^^ help: use `dyn`: `dyn Expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/types/sequence.rs:26:55
[INFO] [stdout]    |
[INFO] [stdout] 26 |         let (first, last, increment): (Box<Expr>, Box<Expr>, Box<Expr>) = match len {
[INFO] [stdout]    |                                                       ^^^^ help: use `dyn`: `dyn Expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/types/sequence.rs:12:16
[INFO] [stdout]    |
[INFO] [stdout] 12 |     first: Box<Expr>,
[INFO] [stdout]    |                ^^^^ help: use `dyn`: `dyn Expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/types/sequence.rs:13:15
[INFO] [stdout]    |
[INFO] [stdout] 13 |     last: Box<Expr>,
[INFO] [stdout]    |               ^^^^ help: use `dyn`: `dyn Expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/types/sequence.rs:26:66
[INFO] [stdout]    |
[INFO] [stdout] 26 |         let (first, last, increment): (Box<Expr>, Box<Expr>, Box<Expr>) = match len {
[INFO] [stdout]    |                                                                  ^^^^ help: use `dyn`: `dyn Expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/types/sequence.rs:14:20
[INFO] [stdout]    |
[INFO] [stdout] 14 |     increment: Box<Expr>,
[INFO] [stdout]    |                    ^^^^ help: use `dyn`: `dyn Expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/types/sequence.rs:23:34
[INFO] [stdout]    |
[INFO] [stdout] 23 |     pub fn new(mut args: Vec<Box<Expr>>, rng: &mut CrateRng) -> Sequence {
[INFO] [stdout]    |                                  ^^^^ help: use `dyn`: `dyn Expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/types/sequence.rs:26:44
[INFO] [stdout]    |
[INFO] [stdout] 26 |         let (first, last, increment): (Box<Expr>, Box<Expr>, Box<Expr>) = match len {
[INFO] [stdout]    |                                            ^^^^ help: use `dyn`: `dyn Expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/types/sequence.rs:26:55
[INFO] [stdout]    |
[INFO] [stdout] 26 |         let (first, last, increment): (Box<Expr>, Box<Expr>, Box<Expr>) = match len {
[INFO] [stdout]    |                                                       ^^^^ help: use `dyn`: `dyn Expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/types/weighted.rs:12:23
[INFO] [stdout]    |
[INFO] [stdout] 12 |     children: Vec<Box<Expr>>,
[INFO] [stdout]    |                       ^^^^ help: use `dyn`: `dyn Expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/types/sequence.rs:26:66
[INFO] [stdout]    |
[INFO] [stdout] 26 |         let (first, last, increment): (Box<Expr>, Box<Expr>, Box<Expr>) = match len {
[INFO] [stdout]    |                                                                  ^^^^ help: use `dyn`: `dyn Expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/types/weighted.rs:19:53
[INFO] [stdout]    |
[INFO] [stdout] 19 |     pub fn new(weights: Vec<u32>, children: Vec<Box<Expr>>) -> WeightedWithReplacement {
[INFO] [stdout]    |                                                     ^^^^ help: use `dyn`: `dyn Expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/types/weighted.rs:71:23
[INFO] [stdout]    |
[INFO] [stdout] 71 |     children: Vec<Box<Expr>>,
[INFO] [stdout]    |                       ^^^^ help: use `dyn`: `dyn Expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/types/weighted.rs:79:27
[INFO] [stdout]    |
[INFO] [stdout] 79 |         children: Vec<Box<Expr>>,
[INFO] [stdout]    |                           ^^^^ help: use `dyn`: `dyn Expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/types/done.rs:9:15
[INFO] [stdout]   |
[INFO] [stdout] 9 |     expr: Box<Expr>,
[INFO] [stdout]   |               ^^^^ help: use `dyn`: `dyn Expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/types/done.rs:13:26
[INFO] [stdout]    |
[INFO] [stdout] 13 |     pub fn new(expr: Box<Expr>) -> Done {
[INFO] [stdout]    |                          ^^^^ help: use `dyn`: `dyn Expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/types/once.rs:9:15
[INFO] [stdout]   |
[INFO] [stdout] 9 |     expr: Box<Expr>,
[INFO] [stdout]   |               ^^^^ help: use `dyn`: `dyn Expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/types/once.rs:13:26
[INFO] [stdout]    |
[INFO] [stdout] 13 |     pub fn new(expr: Box<Expr>) -> Once {
[INFO] [stdout]    |                          ^^^^ help: use `dyn`: `dyn Expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/types/weighted.rs:12:23
[INFO] [stdout]    |
[INFO] [stdout] 12 |     children: Vec<Box<Expr>>,
[INFO] [stdout]    |                       ^^^^ help: use `dyn`: `dyn Expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/types/weighted.rs:19:53
[INFO] [stdout]    |
[INFO] [stdout] 19 |     pub fn new(weights: Vec<u32>, children: Vec<Box<Expr>>) -> WeightedWithReplacement {
[INFO] [stdout]    |                                                     ^^^^ help: use `dyn`: `dyn Expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/types/weighted.rs:71:23
[INFO] [stdout]    |
[INFO] [stdout] 71 |     children: Vec<Box<Expr>>,
[INFO] [stdout]    |                       ^^^^ help: use `dyn`: `dyn Expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/types/weighted.rs:79:27
[INFO] [stdout]    |
[INFO] [stdout] 79 |         children: Vec<Box<Expr>>,
[INFO] [stdout]    |                           ^^^^ help: use `dyn`: `dyn Expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/types/done.rs:9:15
[INFO] [stdout]   |
[INFO] [stdout] 9 |     expr: Box<Expr>,
[INFO] [stdout]   |               ^^^^ help: use `dyn`: `dyn Expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/types/done.rs:13:26
[INFO] [stdout]    |
[INFO] [stdout] 13 |     pub fn new(expr: Box<Expr>) -> Done {
[INFO] [stdout]    |                          ^^^^ help: use `dyn`: `dyn Expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/types/once.rs:9:15
[INFO] [stdout]   |
[INFO] [stdout] 9 |     expr: Box<Expr>,
[INFO] [stdout]   |               ^^^^ help: use `dyn`: `dyn Expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/types/once.rs:13:26
[INFO] [stdout]    |
[INFO] [stdout] 13 |     pub fn new(expr: Box<Expr>) -> Once {
[INFO] [stdout]    |                          ^^^^ help: use `dyn`: `dyn Expr`
[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]   --> src/error.rs:25:42
[INFO] [stdout]    |
[INFO] [stdout] 25 |             Error::Parse(ref err) => err.description(),
[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]   --> src/error.rs:26:46
[INFO] [stdout]    |
[INFO] [stdout] 26 |             Error::Transform(ref err) => err.description(),
[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]   --> src/error.rs:27:39
[INFO] [stdout]    |
[INFO] [stdout] 27 |             Error::Io(ref err) => err.description(),
[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]   --> src/error.rs:25:42
[INFO] [stdout]    |
[INFO] [stdout] 25 |             Error::Parse(ref err) => err.description(),
[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]   --> src/error.rs:26:46
[INFO] [stdout]    |
[INFO] [stdout] 26 |             Error::Transform(ref err) => err.description(),
[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]   --> src/error.rs:27:39
[INFO] [stdout]    |
[INFO] [stdout] 27 |             Error::Io(ref err) => err.description(),
[INFO] [stdout]    |                                       ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 42 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 42 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]   --> tests/readme.rs:24:21
[INFO] [stdout]    |
[INFO] [stdout] 24 |         *entry += 1;;
[INFO] [stdout]    |                     ^ help: remove this semicolon
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]   --> tests/readme.rs:36:21
[INFO] [stdout]    |
[INFO] [stdout] 36 |         *entry += 1;;
[INFO] [stdout]    |                     ^ help: remove this semicolon
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.86s
[INFO] running `Command { std: "docker" "inspect" "b11ffcb5be89859e7e43399c81f70ce62b8b0499a0b2d0ad3344f06b41fac2a0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b11ffcb5be89859e7e43399c81f70ce62b8b0499a0b2d0ad3344f06b41fac2a0", kill_on_drop: false }`
[INFO] [stdout] b11ffcb5be89859e7e43399c81f70ce62b8b0499a0b2d0ad3344f06b41fac2a0