[INFO] cloning repository https://github.com/cis198-2016s/hw04
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/cis198-2016s/hw04" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcis198-2016s%2Fhw04", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcis198-2016s%2Fhw04'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8d4ff5d6004215e2b89b4a807bb4306766ec36e7
[INFO] checking cis198-2016s/hw04 against master#89a99936d9e76a50e8df622e7242190841fd871b for pr-156160-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcis198-2016s%2Fhw04" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/cis198-2016s/hw04
[INFO] finished tweaking git repo https://github.com/cis198-2016s/hw04
[INFO] tweaked toml for git repo https://github.com/cis198-2016s/hw04 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/cis198-2016s/hw04 on toolchain 89a99936d9e76a50e8df622e7242190841fd871b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+89a99936d9e76a50e8df622e7242190841fd871b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/cis198-2016s/hw04 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+89a99936d9e76a50e8df622e7242190841fd871b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: Cargo.toml: `package.edition` is unspecified, defaulting to `2015` while the latest is `2024`
[INFO] [stderr] warning: `hw04` (manifest) generated 1 warning
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:fd22e2154e7db748230f413534f3a6d034160c9d2b7c14b90fba4e9bfc1a36d4" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 428e23cd4a0b0e373fdd55e0b1dc5e48c54021590daca3142b3a4a8dde986247
[INFO] running `Command { std: "docker" "start" "428e23cd4a0b0e373fdd55e0b1dc5e48c54021590daca3142b3a4a8dde986247", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "428e23cd4a0b0e373fdd55e0b1dc5e48c54021590daca3142b3a4a8dde986247" "/opt/rustwide/cargo-home/bin/cargo" "+89a99936d9e76a50e8df622e7242190841fd871b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "428e23cd4a0b0e373fdd55e0b1dc5e48c54021590daca3142b3a4a8dde986247", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-w" "/opt/rustwide/workdir" "--user" "0:0" "428e23cd4a0b0e373fdd55e0b1dc5e48c54021590daca3142b3a4a8dde986247" "/opt/rustwide/cargo-home/bin/cargo" "+89a99936d9e76a50e8df622e7242190841fd871b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] warning: Cargo.toml: `package.edition` is unspecified, defaulting to `2015` while the latest is `2024`
[INFO] [stderr] warning: `hw04` (manifest) generated 1 warning
[INFO] [stderr]     Checking hw04 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0432]: unresolved import `rpn::Stack`
[INFO] [stdout]  --> src/parser.rs:3:17
[INFO] [stdout]   |
[INFO] [stdout] 3 | use rpn::{self, Stack};
[INFO] [stdout]   |                 ^^^^^ no `Stack` in `rpn`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `rpn::Stack`
[INFO] [stdout]  --> src/parser.rs:3:17
[INFO] [stdout]   |
[INFO] [stdout] 3 | use rpn::{self, Stack};
[INFO] [stdout]   |                 ^^^^^ no `Stack` in `rpn`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `rpn::Stack`
[INFO] [stdout]   --> src/parser.rs:31:15
[INFO] [stdout]    |
[INFO] [stdout] 31 |     use rpn::{Stack, Error, Elt};
[INFO] [stdout]    |               ^^^^^ no `Stack` in `rpn`
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider importing this unresolved item through its public re-export instead:
[INFO] [stdout]            parser::Stack
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find type `Result` in module `rpn`
[INFO] [stdout]  --> src/parser.rs:6:39
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn read_eval_print_loop() -> rpn::Result<()> {
[INFO] [stdout]   |                                       ^^^^^^ not found in `rpn`
[INFO] [stdout]   |
[INFO] [stdout] help: consider importing one of these items
[INFO] [stdout]   |
[INFO] [stdout] 1 + use std::fmt::Result;
[INFO] [stdout]   |
[INFO] [stdout] 1 + use std::result::Result;
[INFO] [stdout]   |
[INFO] [stdout] 1 + use std::thread::Result;
[INFO] [stdout]   |
[INFO] [stdout] 1 + use parser::io::Result;
[INFO] [stdout]   |
[INFO] [stdout] help: if you import `Result`, refer to it directly
[INFO] [stdout]   |
[INFO] [stdout] 6 - pub fn read_eval_print_loop() -> rpn::Result<()> {
[INFO] [stdout] 6 + pub fn read_eval_print_loop() -> Result<()> {
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find type `Result` in module `rpn`
[INFO] [stdout]   --> src/parser.rs:21:59
[INFO] [stdout]    |
[INFO] [stdout] 21 | fn evaluate_line(stack: &mut Stack, buf: &String) -> rpn::Result<()> {
[INFO] [stdout]    |                                                           ^^^^^^ not found in `rpn`
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing one of these items
[INFO] [stdout]    |
[INFO] [stdout]  1 + use std::fmt::Result;
[INFO] [stdout]    |
[INFO] [stdout]  1 + use std::result::Result;
[INFO] [stdout]    |
[INFO] [stdout]  1 + use std::thread::Result;
[INFO] [stdout]    |
[INFO] [stdout]  1 + use parser::io::Result;
[INFO] [stdout]    |
[INFO] [stdout] help: if you import `Result`, refer to it directly
[INFO] [stdout]    |
[INFO] [stdout] 21 - fn evaluate_line(stack: &mut Stack, buf: &String) -> rpn::Result<()> {
[INFO] [stdout] 21 + fn evaluate_line(stack: &mut Stack, buf: &String) -> Result<()> {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find type `Stack` in this scope
[INFO] [stdout]   --> src/rpn.rs:47:6
[INFO] [stdout]    |
[INFO] [stdout] 47 | impl Stack {
[INFO] [stdout]    |      ^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find type `Stack` in this scope
[INFO] [stdout]   --> src/rpn.rs:49:21
[INFO] [stdout]    |
[INFO] [stdout] 49 |     pub fn new() -> Stack {
[INFO] [stdout]    |                     ^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/parser.rs:13:9
[INFO] [stdout]    |
[INFO] [stdout] 13 |         try!(io::stdout().flush().map_err(rpn::Error::IO));
[INFO] [stdout]    |         ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::result`
[INFO] [stdout]  --> src/rpn.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::result;
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0107]: enum takes 2 generic arguments but 1 generic argument was supplied
[INFO] [stdout]   --> src/rpn.rs:54:41
[INFO] [stdout]    |
[INFO] [stdout] 54 |     pub fn push(&mut self, val: Elt) -> Result<()> {
[INFO] [stdout]    |                                         ^^^^^^ -- supplied 1 generic argument
[INFO] [stdout]    |                                         |
[INFO] [stdout]    |                                         expected 2 generic arguments
[INFO] [stdout]    |
[INFO] [stdout] help: add missing generic argument
[INFO] [stdout]    |
[INFO] [stdout] 54 |     pub fn push(&mut self, val: Elt) -> Result<(), E> {
[INFO] [stdout]    |                                                  +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0107]: enum takes 2 generic arguments but 1 generic argument was supplied
[INFO] [stdout]   --> src/rpn.rs:59:30
[INFO] [stdout]    |
[INFO] [stdout] 59 |     pub fn pop(&mut self) -> Result<Elt> {
[INFO] [stdout]    |                              ^^^^^^ --- supplied 1 generic argument
[INFO] [stdout]    |                              |
[INFO] [stdout]    |                              expected 2 generic arguments
[INFO] [stdout]    |
[INFO] [stdout] help: add missing generic argument
[INFO] [stdout]    |
[INFO] [stdout] 59 |     pub fn pop(&mut self) -> Result<Elt, E> {
[INFO] [stdout]    |                                        +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0107]: enum takes 2 generic arguments but 1 generic argument was supplied
[INFO] [stdout]   --> src/rpn.rs:64:39
[INFO] [stdout]    |
[INFO] [stdout] 64 |     pub fn eval(&mut self, op: Op) -> Result<()> {
[INFO] [stdout]    |                                       ^^^^^^ -- supplied 1 generic argument
[INFO] [stdout]    |                                       |
[INFO] [stdout]    |                                       expected 2 generic arguments
[INFO] [stdout]    |
[INFO] [stdout] help: add missing generic argument
[INFO] [stdout]    |
[INFO] [stdout] 64 |     pub fn eval(&mut self, op: Op) -> Result<(), E> {
[INFO] [stdout]    |                                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find type `Result` in module `rpn`
[INFO] [stdout]  --> src/parser.rs:6:39
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn read_eval_print_loop() -> rpn::Result<()> {
[INFO] [stdout]   |                                       ^^^^^^ not found in `rpn`
[INFO] [stdout]   |
[INFO] [stdout] help: consider importing one of these items
[INFO] [stdout]   |
[INFO] [stdout] 1 + use std::fmt::Result;
[INFO] [stdout]   |
[INFO] [stdout] 1 + use std::prelude::rust_2024::Result;
[INFO] [stdout]   |
[INFO] [stdout] 1 + use std::thread::Result;
[INFO] [stdout]   |
[INFO] [stdout] help: if you import `Result`, refer to it directly
[INFO] [stdout]   |
[INFO] [stdout] 6 - pub fn read_eval_print_loop() -> rpn::Result<()> {
[INFO] [stdout] 6 + pub fn read_eval_print_loop() -> Result<()> {
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find type `Result` in module `rpn`
[INFO] [stdout]   --> src/parser.rs:21:59
[INFO] [stdout]    |
[INFO] [stdout] 21 | fn evaluate_line(stack: &mut Stack, buf: &String) -> rpn::Result<()> {
[INFO] [stdout]    |                                                           ^^^^^^ not found in `rpn`
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing one of these items
[INFO] [stdout]    |
[INFO] [stdout]  1 + use std::fmt::Result;
[INFO] [stdout]    |
[INFO] [stdout]  1 + use std::prelude::rust_2024::Result;
[INFO] [stdout]    |
[INFO] [stdout]  1 + use std::thread::Result;
[INFO] [stdout]    |
[INFO] [stdout] help: if you import `Result`, refer to it directly
[INFO] [stdout]    |
[INFO] [stdout] 21 - fn evaluate_line(stack: &mut Stack, buf: &String) -> rpn::Result<()> {
[INFO] [stdout] 21 + fn evaluate_line(stack: &mut Stack, buf: &String) -> Result<()> {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find type `Stack` in this scope
[INFO] [stdout]   --> src/rpn.rs:47:6
[INFO] [stdout]    |
[INFO] [stdout] 47 | impl Stack {
[INFO] [stdout]    |      ^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find type `Stack` in this scope
[INFO] [stdout]   --> src/rpn.rs:49:21
[INFO] [stdout]    |
[INFO] [stdout] 49 |     pub fn new() -> Stack {
[INFO] [stdout]    |                     ^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/parser.rs:13:9
[INFO] [stdout]    |
[INFO] [stdout] 13 |         try!(io::stdout().flush().map_err(rpn::Error::IO));
[INFO] [stdout]    |         ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::result`
[INFO] [stdout]  --> src/rpn.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::result;
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0107, E0425, E0432.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0107`.
[INFO] [stdout] 
[INFO] [stdout] error[E0107]: enum takes 2 generic arguments but 1 generic argument was supplied
[INFO] [stdout]   --> src/rpn.rs:54:41
[INFO] [stdout]    |
[INFO] [stdout] 54 |     pub fn push(&mut self, val: Elt) -> Result<()> {
[INFO] [stdout]    |                                         ^^^^^^ -- supplied 1 generic argument
[INFO] [stdout]    |                                         |
[INFO] [stdout]    |                                         expected 2 generic arguments
[INFO] [stdout]    |
[INFO] [stdout] help: add missing generic argument
[INFO] [stdout]    |
[INFO] [stdout] 54 |     pub fn push(&mut self, val: Elt) -> Result<(), E> {
[INFO] [stdout]    |                                                  +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0107]: enum takes 2 generic arguments but 1 generic argument was supplied
[INFO] [stdout]   --> src/rpn.rs:59:30
[INFO] [stdout]    |
[INFO] [stdout] 59 |     pub fn pop(&mut self) -> Result<Elt> {
[INFO] [stdout]    |                              ^^^^^^ --- supplied 1 generic argument
[INFO] [stdout]    |                              |
[INFO] [stdout]    |                              expected 2 generic arguments
[INFO] [stdout]    |
[INFO] [stdout] help: add missing generic argument
[INFO] [stdout]    |
[INFO] [stdout] 59 |     pub fn pop(&mut self) -> Result<Elt, E> {
[INFO] [stdout]    |                                        +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0107]: enum takes 2 generic arguments but 1 generic argument was supplied
[INFO] [stdout]   --> src/rpn.rs:64:39
[INFO] [stdout]    |
[INFO] [stdout] 64 |     pub fn eval(&mut self, op: Op) -> Result<()> {
[INFO] [stdout]    |                                       ^^^^^^ -- supplied 1 generic argument
[INFO] [stdout]    |                                       |
[INFO] [stdout]    |                                       expected 2 generic arguments
[INFO] [stdout]    |
[INFO] [stdout] help: add missing generic argument
[INFO] [stdout]    |
[INFO] [stdout] 64 |     pub fn eval(&mut self, op: Op) -> Result<(), E> {
[INFO] [stdout]    |                                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `hw04` (bin "hw04") due to 8 previous errors; 2 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error[E0433]: cannot find type `Stack` in this scope
[INFO] [stdout]   --> src/rpn.rs:75:21
[INFO] [stdout]    |
[INFO] [stdout] 75 |         let mut s = Stack::new();
[INFO] [stdout]    |                     ^^^^^ use of undeclared type `Stack`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: cannot find type `Stack` in this scope
[INFO] [stdout]   --> src/rpn.rs:84:21
[INFO] [stdout]    |
[INFO] [stdout] 84 |         let mut s = Stack::new();
[INFO] [stdout]    |                     ^^^^^ use of undeclared type `Stack`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: cannot find type `Stack` in this scope
[INFO] [stdout]   --> src/rpn.rs:97:21
[INFO] [stdout]    |
[INFO] [stdout] 97 |         let mut s = Stack::new();
[INFO] [stdout]    |                     ^^^^^ use of undeclared type `Stack`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: cannot find type `Stack` in this scope
[INFO] [stdout]    --> src/rpn.rs:107:21
[INFO] [stdout]     |
[INFO] [stdout] 107 |         let mut s = Stack::new();
[INFO] [stdout]     |                     ^^^^^ use of undeclared type `Stack`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: cannot find type `Stack` in this scope
[INFO] [stdout]    --> src/rpn.rs:118:21
[INFO] [stdout]     |
[INFO] [stdout] 118 |         let mut s = Stack::new();
[INFO] [stdout]     |                     ^^^^^ use of undeclared type `Stack`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: cannot find type `Stack` in this scope
[INFO] [stdout]    --> src/rpn.rs:129:21
[INFO] [stdout]     |
[INFO] [stdout] 129 |         let mut s = Stack::new();
[INFO] [stdout]     |                     ^^^^^ use of undeclared type `Stack`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: cannot find type `Stack` in this scope
[INFO] [stdout]    --> src/rpn.rs:139:21
[INFO] [stdout]     |
[INFO] [stdout] 139 |         let mut s = Stack::new();
[INFO] [stdout]     |                     ^^^^^ use of undeclared type `Stack`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: cannot find type `Stack` in this scope
[INFO] [stdout]    --> src/rpn.rs:150:21
[INFO] [stdout]     |
[INFO] [stdout] 150 |         let mut s = Stack::new();
[INFO] [stdout]     |                     ^^^^^ use of undeclared type `Stack`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: cannot find type `Stack` in this scope
[INFO] [stdout]    --> src/rpn.rs:158:21
[INFO] [stdout]     |
[INFO] [stdout] 158 |         let mut s = Stack::new();
[INFO] [stdout]     |                     ^^^^^ use of undeclared type `Stack`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: cannot find type `Stack` in this scope
[INFO] [stdout]    --> src/rpn.rs:166:21
[INFO] [stdout]     |
[INFO] [stdout] 166 |         let mut s = Stack::new();
[INFO] [stdout]     |                     ^^^^^ use of undeclared type `Stack`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: cannot find type `Stack` in this scope
[INFO] [stdout]    --> src/rpn.rs:181:21
[INFO] [stdout]     |
[INFO] [stdout] 181 |         let mut s = Stack::new();
[INFO] [stdout]     |                     ^^^^^ use of undeclared type `Stack`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: cannot find type `Stack` in this scope
[INFO] [stdout]    --> src/rpn.rs:191:21
[INFO] [stdout]     |
[INFO] [stdout] 191 |         let mut s = Stack::new();
[INFO] [stdout]     |                     ^^^^^ use of undeclared type `Stack`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: cannot find type `Stack` in this scope
[INFO] [stdout]    --> src/rpn.rs:204:21
[INFO] [stdout]     |
[INFO] [stdout] 204 |         let mut s = Stack::new();
[INFO] [stdout]     |                     ^^^^^ use of undeclared type `Stack`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: cannot find type `Stack` in this scope
[INFO] [stdout]    --> src/rpn.rs:214:21
[INFO] [stdout]     |
[INFO] [stdout] 214 |         let mut s = Stack::new();
[INFO] [stdout]     |                     ^^^^^ use of undeclared type `Stack`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0107, E0425, E0432, E0433.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0107`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `hw04` (bin "hw04" test) due to 23 previous errors; 2 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "428e23cd4a0b0e373fdd55e0b1dc5e48c54021590daca3142b3a4a8dde986247", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "428e23cd4a0b0e373fdd55e0b1dc5e48c54021590daca3142b3a4a8dde986247", kill_on_drop: false }`
[INFO] [stdout] 428e23cd4a0b0e373fdd55e0b1dc5e48c54021590daca3142b3a4a8dde986247
