[INFO] updating cached repository https://github.com/EdenCao/rust_learning
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune", kill_on_drop: false }`
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3b85aa524f292dd7b9939ed7d5de8b6456618f9f
[INFO] checking EdenCao/rust_learning against master#c724b67e1b474262917a5154d74e7072267593fe for pr-74315
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FEdenCao%2Frust_learning" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/EdenCao/rust_learning on toolchain c724b67e1b474262917a5154d74e7072267593fe
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c724b67e1b474262917a5154d74e7072267593fe" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/EdenCao/rust_learning
[INFO] finished tweaking git repo https://github.com/EdenCao/rust_learning
[INFO] tweaked toml for git repo https://github.com/EdenCao/rust_learning written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/EdenCao/rust_learning already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c724b67e1b474262917a5154d74e7072267593fe" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+c724b67e1b474262917a5154d74e7072267593fe" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 3763642767d72a345d4bdea7e745abe8c20e11ffc36285d5a73894fc3dae1794
[INFO] running `Command { std: "docker" "start" "-a" "3763642767d72a345d4bdea7e745abe8c20e11ffc36285d5a73894fc3dae1794", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3763642767d72a345d4bdea7e745abe8c20e11ffc36285d5a73894fc3dae1794", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3763642767d72a345d4bdea7e745abe8c20e11ffc36285d5a73894fc3dae1794", kill_on_drop: false }`
[INFO] [stdout] 3763642767d72a345d4bdea7e745abe8c20e11ffc36285d5a73894fc3dae1794
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+c724b67e1b474262917a5154d74e7072267593fe" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a28426d3c507397558ab606b4ba48b2d9f026f97007fc1f9a972f0ae6e7d72c5
[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" "a28426d3c507397558ab606b4ba48b2d9f026f97007fc1f9a972f0ae6e7d72c5", kill_on_drop: false }`
[INFO] [stderr]     Checking rand_core v0.3.0
[INFO] [stderr]     Checking libc v0.2.43
[INFO] [stderr]     Checking rand_core v0.2.2
[INFO] [stderr]     Checking rand v0.5.5
[INFO] [stderr]     Checking rust_learning v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0601]: `main` function not found in crate `refcall`
[INFO] [stdout]   --> src/refcall.rs:1:1
[INFO] [stdout]    |
[INFO] [stdout] 1  | / pub trait Messenger {
[INFO] [stdout] 2  | |     fn send(&self, msg: &str);
[INFO] [stdout] 3  | | }
[INFO] [stdout] 4  | |
[INFO] [stdout] ...  |
[INFO] [stdout] 65 | |
[INFO] [stdout] 66 | | }
[INFO] [stdout]    | |_^ consider adding a `main` function to `src/refcall.rs`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0601`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rust_learning`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: variable `count` is assigned to, but never used
[INFO] [stdout]   --> src/iflet.rs:20:7
[INFO] [stdout]    |
[INFO] [stdout] 20 |   let mut count = 0;
[INFO] [stdout]    |       ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout]    = note: consider using `_count` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::time::Duration`
[INFO] [stdout]  --> src/multiple_thread.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::time::Duration;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `count` is never read
[INFO] [stdout]   --> src/iflet.rs:25:5
[INFO] [stdout]    |
[INFO] [stdout] 25 |     count += 1;
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Penny`
[INFO] [stdout]  --> src/iflet.rs:2:3
[INFO] [stdout]   |
[INFO] [stdout] 2 |   Penny,
[INFO] [stdout]   |   ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Nickel`
[INFO] [stdout]  --> src/iflet.rs:3:3
[INFO] [stdout]   |
[INFO] [stdout] 3 |   Nickel,
[INFO] [stdout]   |   ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Dime`
[INFO] [stdout]  --> src/iflet.rs:4:3
[INFO] [stdout]   |
[INFO] [stdout] 4 |   Dime,
[INFO] [stdout]   |   ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Alabama`
[INFO] [stdout]   --> src/iflet.rs:10:3
[INFO] [stdout]    |
[INFO] [stdout] 10 |   Alabama,
[INFO] [stdout]    |   ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/blog.rs:2:21
[INFO] [stdout]   |
[INFO] [stdout] 2 |   state: Option<Box<State>>,
[INFO] [stdout]   |                     ^^^^^ help: use `dyn`: `dyn State`
[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/blog.rs:33:45
[INFO] [stdout]    |
[INFO] [stdout] 33 |   fn request_review(self: Box<Self>) -> Box<State>;
[INFO] [stdout]    |                                             ^^^^^ help: use `dyn`: `dyn State`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `six`
[INFO] [stdout]   --> src/match.rs:25:7
[INFO] [stdout]    |
[INFO] [stdout] 25 |   let six = plus_one(five);
[INFO] [stdout]    |       ^^^ help: if this is intentional, prefix it with an underscore: `_six`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/blog.rs:34:38
[INFO] [stdout]    |
[INFO] [stdout] 34 |   fn approve(self: Box<Self>) -> Box<State>;
[INFO] [stdout]    |                                      ^^^^^ help: use `dyn`: `dyn State`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `none`
[INFO] [stdout]   --> src/match.rs:26:7
[INFO] [stdout]    |
[INFO] [stdout] 26 |   let none = plus_one(None);
[INFO] [stdout]    |       ^^^^ help: if this is intentional, prefix it with an underscore: `_none`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/blog.rs:40:45
[INFO] [stdout]    |
[INFO] [stdout] 40 |   fn request_review(self: Box<Self>) -> Box<State> {
[INFO] [stdout]    |                                             ^^^^^ help: use `dyn`: `dyn State`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/blog.rs:44:38
[INFO] [stdout]    |
[INFO] [stdout] 44 |   fn approve(self: Box<Self>) -> Box<State> {
[INFO] [stdout]    |                                      ^^^^^ help: use `dyn`: `dyn State`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/blog.rs:52:45
[INFO] [stdout]    |
[INFO] [stdout] 52 |   fn request_review(self: Box<Self>) -> Box<State> {
[INFO] [stdout]    |                                             ^^^^^ help: use `dyn`: `dyn State`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/blog.rs:56:38
[INFO] [stdout]    |
[INFO] [stdout] 56 |   fn approve(self: Box<Self>) -> Box<State> {
[INFO] [stdout]    |                                      ^^^^^ help: use `dyn`: `dyn State`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/blog.rs:64:45
[INFO] [stdout]    |
[INFO] [stdout] 64 |   fn request_review(self: Box<Self>) -> Box<State> {
[INFO] [stdout]    |                                             ^^^^^ help: use `dyn`: `dyn State`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/blog.rs:68:38
[INFO] [stdout]    |
[INFO] [stdout] 68 |   fn approve(self: Box<Self>) -> Box<State> {
[INFO] [stdout]    |                                      ^^^^^ help: use `dyn`: `dyn State`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Penny`
[INFO] [stdout]  --> src/match.rs:2:3
[INFO] [stdout]   |
[INFO] [stdout] 2 |   Penny,
[INFO] [stdout]   |   ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Nickel`
[INFO] [stdout]  --> src/match.rs:3:3
[INFO] [stdout]   |
[INFO] [stdout] 3 |   Nickel,
[INFO] [stdout]   |   ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Dime`
[INFO] [stdout]  --> src/match.rs:4:3
[INFO] [stdout]   |
[INFO] [stdout] 4 |   Dime,
[INFO] [stdout]   |   ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Alabama`
[INFO] [stdout]   --> src/match.rs:10:3
[INFO] [stdout]    |
[INFO] [stdout] 10 |   Alabama,
[INFO] [stdout]    |   ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/slice.rs:2:7
[INFO] [stdout]   |
[INFO] [stdout] 2 |   let mut s = String::from("hello world");
[INFO] [stdout]   |       ----^
[INFO] [stdout]   |       |
[INFO] [stdout]   |       help: remove this `mut`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `post`
[INFO] [stdout]   --> src/blog.rs:30:25
[INFO] [stdout]    |
[INFO] [stdout] 30 |   fn content<'a>(&self, post: &'a Post) -> &'a str {
[INFO] [stdout]    |                         ^^^^ help: if this is intentional, prefix it with an underscore: `_post`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/blog.rs:2:21
[INFO] [stdout]   |
[INFO] [stdout] 2 |   state: Option<Box<State>>,
[INFO] [stdout]   |                     ^^^^^ help: use `dyn`: `dyn State`
[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/blog.rs:33:45
[INFO] [stdout]    |
[INFO] [stdout] 33 |   fn request_review(self: Box<Self>) -> Box<State>;
[INFO] [stdout]    |                                             ^^^^^ help: use `dyn`: `dyn State`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/blog.rs:34:38
[INFO] [stdout]    |
[INFO] [stdout] 34 |   fn approve(self: Box<Self>) -> Box<State>;
[INFO] [stdout]    |                                      ^^^^^ help: use `dyn`: `dyn State`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/blog.rs:40:45
[INFO] [stdout]    |
[INFO] [stdout] 40 |   fn request_review(self: Box<Self>) -> Box<State> {
[INFO] [stdout]    |                                             ^^^^^ help: use `dyn`: `dyn State`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/blog.rs:44:38
[INFO] [stdout]    |
[INFO] [stdout] 44 |   fn approve(self: Box<Self>) -> Box<State> {
[INFO] [stdout]    |                                      ^^^^^ help: use `dyn`: `dyn State`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/blog.rs:52:45
[INFO] [stdout]    |
[INFO] [stdout] 52 |   fn request_review(self: Box<Self>) -> Box<State> {
[INFO] [stdout]    |                                             ^^^^^ help: use `dyn`: `dyn State`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/blog.rs:56:38
[INFO] [stdout]    |
[INFO] [stdout] 56 |   fn approve(self: Box<Self>) -> Box<State> {
[INFO] [stdout]    |                                      ^^^^^ help: use `dyn`: `dyn State`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/blog.rs:64:45
[INFO] [stdout]    |
[INFO] [stdout] 64 |   fn request_review(self: Box<Self>) -> Box<State> {
[INFO] [stdout]    |                                             ^^^^^ help: use `dyn`: `dyn State`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/blog.rs:68:38
[INFO] [stdout]    |
[INFO] [stdout] 68 |   fn approve(self: Box<Self>) -> Box<State> {
[INFO] [stdout]    |                                      ^^^^^ help: use `dyn`: `dyn State`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::rc::Rc`
[INFO] [stdout]  --> src/shared_mem.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::rc::Rc;
[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: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `post`
[INFO] [stdout]   --> src/blog.rs:30:25
[INFO] [stdout]    |
[INFO] [stdout] 30 |   fn content<'a>(&self, post: &'a Post) -> &'a str {
[INFO] [stdout]    |                         ^^^^ help: if this is intentional, prefix it with an underscore: `_post`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `integer`
[INFO] [stdout]   --> src/generics.rs:14:7
[INFO] [stdout]    |
[INFO] [stdout] 14 |   let integer = Point {
[INFO] [stdout]    |       ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_integer`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `six`
[INFO] [stdout]   --> src/match.rs:25:7
[INFO] [stdout]    |
[INFO] [stdout] 25 |   let six = plus_one(five);
[INFO] [stdout]    |       ^^^ help: if this is intentional, prefix it with an underscore: `_six`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `none`
[INFO] [stdout]   --> src/match.rs:26:7
[INFO] [stdout]    |
[INFO] [stdout] 26 |   let none = plus_one(None);
[INFO] [stdout]    |       ^^^^ help: if this is intentional, prefix it with an underscore: `_none`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `y`
[INFO] [stdout]  --> src/generics.rs:3:3
[INFO] [stdout]   |
[INFO] [stdout] 3 |   y: T
[INFO] [stdout]   |   ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Penny`
[INFO] [stdout]  --> src/match.rs:2:3
[INFO] [stdout]   |
[INFO] [stdout] 2 |   Penny,
[INFO] [stdout]   |   ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Nickel`
[INFO] [stdout]  --> src/match.rs:3:3
[INFO] [stdout]   |
[INFO] [stdout] 3 |   Nickel,
[INFO] [stdout]   |   ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Dime`
[INFO] [stdout]  --> src/match.rs:4:3
[INFO] [stdout]   |
[INFO] [stdout] 4 |   Dime,
[INFO] [stdout]   |   ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Alabama`
[INFO] [stdout]   --> src/match.rs:10:3
[INFO] [stdout]    |
[INFO] [stdout] 10 |   Alabama,
[INFO] [stdout]    |   ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "a28426d3c507397558ab606b4ba48b2d9f026f97007fc1f9a972f0ae6e7d72c5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a28426d3c507397558ab606b4ba48b2d9f026f97007fc1f9a972f0ae6e7d72c5", kill_on_drop: false }`
[INFO] [stdout] a28426d3c507397558ab606b4ba48b2d9f026f97007fc1f9a972f0ae6e7d72c5