[INFO] cloning repository https://github.com/jjc914/cis198-homework3
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jjc914/cis198-homework3" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjjc914%2Fcis198-homework3", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjjc914%2Fcis198-homework3'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 53ee92c6323b2a899a68bdf76a2f39a29c75f109
[INFO] checking jjc914/cis198-homework3 against master#bca37a20bd376ce3fd138e7cdee7fe704e0f8814 for pr-139493-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjjc914%2Fcis198-homework3" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/jjc914/cis198-homework3
[INFO] finished tweaking git repo https://github.com/jjc914/cis198-homework3
[INFO] tweaked toml for git repo https://github.com/jjc914/cis198-homework3 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/jjc914/cis198-homework3 on toolchain bca37a20bd376ce3fd138e7cdee7fe704e0f8814
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/jjc914/cis198-homework3 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" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 273e278ff76074a5f0eead1ab400afe0ffb24601f7292b9d6e97b762064bd71a
[INFO] running `Command { std: "docker" "start" "-a" "273e278ff76074a5f0eead1ab400afe0ffb24601f7292b9d6e97b762064bd71a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "273e278ff76074a5f0eead1ab400afe0ffb24601f7292b9d6e97b762064bd71a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "273e278ff76074a5f0eead1ab400afe0ffb24601f7292b9d6e97b762064bd71a", kill_on_drop: false }`
[INFO] [stdout] 273e278ff76074a5f0eead1ab400afe0ffb24601f7292b9d6e97b762064bd71a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] eb951d498b3ee57865a76481cc97a648182f2314419c074f38f5b934951b04d5
[INFO] running `Command { std: "docker" "start" "-a" "eb951d498b3ee57865a76481cc97a648182f2314419c074f38f5b934951b04d5", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.71
[INFO] [stderr]    Compiling serde v1.0.193
[INFO] [stderr]    Compiling libc v0.2.151
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking clap v2.34.0
[INFO] [stderr]    Compiling quote v1.0.33
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling syn v2.0.42
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling serde_derive v1.0.193
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling structopt-derive v0.4.18
[INFO] [stderr]     Checking structopt v0.3.26
[INFO] [stderr]     Checking serde_json v1.0.108
[INFO] [stderr]     Checking homework3 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around closure body
[INFO] [stdout]    --> src/graph/mod.rs:550:28
[INFO] [stdout]     |
[INFO] [stdout] 550 |         dfs.map(|(vid, _)| (self.id_to_vertex(&vid).unwrap()))
[INFO] [stdout]     |                            ^                                ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 550 -         dfs.map(|(vid, _)| (self.id_to_vertex(&vid).unwrap()))
[INFO] [stdout] 550 +         dfs.map(|(vid, _)| self.id_to_vertex(&vid).unwrap() )
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around closure body
[INFO] [stdout]    --> src/graph/mod.rs:588:28
[INFO] [stdout]     |
[INFO] [stdout] 588 |         dfs.map(|(vid, _)| (self.id_to_vertex(&vid).unwrap()))
[INFO] [stdout]     |                            ^                                ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 588 -         dfs.map(|(vid, _)| (self.id_to_vertex(&vid).unwrap()))
[INFO] [stdout] 588 +         dfs.map(|(vid, _)| self.id_to_vertex(&vid).unwrap() )
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around closure body
[INFO] [stdout]    --> src/graph/mod.rs:629:28
[INFO] [stdout]     |
[INFO] [stdout] 629 |         bfs.map(|(vid, _)| (self.id_to_vertex(&vid).unwrap()))
[INFO] [stdout]     |                            ^                                ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 629 -         bfs.map(|(vid, _)| (self.id_to_vertex(&vid).unwrap()))
[INFO] [stdout] 629 +         bfs.map(|(vid, _)| self.id_to_vertex(&vid).unwrap() )
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around closure body
[INFO] [stdout]    --> src/graph/mod.rs:667:28
[INFO] [stdout]     |
[INFO] [stdout] 667 |         bfs.map(|(vid, _)| (self.id_to_vertex(&vid).unwrap()))
[INFO] [stdout]     |                            ^                                ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 667 -         bfs.map(|(vid, _)| (self.id_to_vertex(&vid).unwrap()))
[INFO] [stdout] 667 +         bfs.map(|(vid, _)| self.id_to_vertex(&vid).unwrap() )
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around closure body
[INFO] [stdout]    --> src/graph/mod.rs:550:28
[INFO] [stdout]     |
[INFO] [stdout] 550 |         dfs.map(|(vid, _)| (self.id_to_vertex(&vid).unwrap()))
[INFO] [stdout]     |                            ^                                ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 550 -         dfs.map(|(vid, _)| (self.id_to_vertex(&vid).unwrap()))
[INFO] [stdout] 550 +         dfs.map(|(vid, _)| self.id_to_vertex(&vid).unwrap() )
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around closure body
[INFO] [stdout]    --> src/graph/mod.rs:588:28
[INFO] [stdout]     |
[INFO] [stdout] 588 |         dfs.map(|(vid, _)| (self.id_to_vertex(&vid).unwrap()))
[INFO] [stdout]     |                            ^                                ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 588 -         dfs.map(|(vid, _)| (self.id_to_vertex(&vid).unwrap()))
[INFO] [stdout] 588 +         dfs.map(|(vid, _)| self.id_to_vertex(&vid).unwrap() )
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around closure body
[INFO] [stdout]    --> src/graph/mod.rs:629:28
[INFO] [stdout]     |
[INFO] [stdout] 629 |         bfs.map(|(vid, _)| (self.id_to_vertex(&vid).unwrap()))
[INFO] [stdout]     |                            ^                                ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 629 -         bfs.map(|(vid, _)| (self.id_to_vertex(&vid).unwrap()))
[INFO] [stdout] 629 +         bfs.map(|(vid, _)| self.id_to_vertex(&vid).unwrap() )
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around closure body
[INFO] [stdout]    --> src/graph/mod.rs:667:28
[INFO] [stdout]     |
[INFO] [stdout] 667 |         bfs.map(|(vid, _)| (self.id_to_vertex(&vid).unwrap()))
[INFO] [stdout]     |                            ^                                ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 667 -         bfs.map(|(vid, _)| (self.id_to_vertex(&vid).unwrap()))
[INFO] [stdout] 667 +         bfs.map(|(vid, _)| self.id_to_vertex(&vid).unwrap() )
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `token`
[INFO] [stdout]    --> src/compiler/mod.rs:382:11
[INFO] [stdout]     |
[INFO] [stdout] 382 |                         let token = tokens.pop_front().unwrap();
[INFO] [stdout]     |                             ^^^^^ help: if this is intentional, prefix it with an underscore: `_token`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `token`
[INFO] [stdout]    --> src/compiler/mod.rs:392:11
[INFO] [stdout]     |
[INFO] [stdout] 392 |                         let token = tokens.pop_front().unwrap();
[INFO] [stdout]     |                             ^^^^^ help: if this is intentional, prefix it with an underscore: `_token`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `assembly`
[INFO] [stdout]    --> src/compiler/mod.rs:647:29
[INFO] [stdout]     |
[INFO] [stdout] 647 |     fn generate_decl_statement(assembly: &mut String, variable_offsets: &mut HashMap<String, usize>) {
[INFO] [stdout]     |                                ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_assembly`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `variable_offsets`
[INFO] [stdout]    --> src/compiler/mod.rs:647:52
[INFO] [stdout]     |
[INFO] [stdout] 647 |     fn generate_decl_statement(assembly: &mut String, variable_offsets: &mut HashMap<String, usize>) {
[INFO] [stdout]     |                                                       ^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_variable_offsets`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: eliding a lifetime that's named elsewhere is confusing
[INFO] [stdout]    --> src/graph/mod.rs:458:85
[INFO] [stdout]     |
[INFO] [stdout] 458 |     pub fn iter_sources<'b>(&'b self, label: &'b V) -> Result<impl Iterator<Item = (&E, &V)> + 'b, VertexMissingError> {
[INFO] [stdout]     |                              --               --                                    ^^  ^^     -- the same lifetime is named here
[INFO] [stdout]     |                              |                |                                     |   |
[INFO] [stdout]     |                              |                |                                     |   the same lifetime is elided here
[INFO] [stdout]     |                              |                the lifetime is named here            the same lifetime is elided here
[INFO] [stdout]     |                              the lifetime is named here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: consistently use `'b`
[INFO] [stdout]     |
[INFO] [stdout] 458 |     pub fn iter_sources<'b>(&'b self, label: &'b V) -> Result<impl Iterator<Item = (&'b E, &'b V)> + 'b, VertexMissingError> {
[INFO] [stdout]     |                                                                                      ++     ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `token`
[INFO] [stdout]    --> src/compiler/mod.rs:382:11
[INFO] [stdout]     |
[INFO] [stdout] 382 |                         let token = tokens.pop_front().unwrap();
[INFO] [stdout]     |                             ^^^^^ help: if this is intentional, prefix it with an underscore: `_token`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `token`
[INFO] [stdout]    --> src/compiler/mod.rs:392:11
[INFO] [stdout]     |
[INFO] [stdout] 392 |                         let token = tokens.pop_front().unwrap();
[INFO] [stdout]     |                             ^^^^^ help: if this is intentional, prefix it with an underscore: `_token`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `assembly`
[INFO] [stdout]    --> src/compiler/mod.rs:647:29
[INFO] [stdout]     |
[INFO] [stdout] 647 |     fn generate_decl_statement(assembly: &mut String, variable_offsets: &mut HashMap<String, usize>) {
[INFO] [stdout]     |                                ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_assembly`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `variable_offsets`
[INFO] [stdout]    --> src/compiler/mod.rs:647:52
[INFO] [stdout]     |
[INFO] [stdout] 647 |     fn generate_decl_statement(assembly: &mut String, variable_offsets: &mut HashMap<String, usize>) {
[INFO] [stdout]     |                                                       ^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_variable_offsets`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: eliding a lifetime that's named elsewhere is confusing
[INFO] [stdout]    --> src/graph/mod.rs:458:85
[INFO] [stdout]     |
[INFO] [stdout] 458 |     pub fn iter_sources<'b>(&'b self, label: &'b V) -> Result<impl Iterator<Item = (&E, &V)> + 'b, VertexMissingError> {
[INFO] [stdout]     |                              --               --                                    ^^  ^^     -- the same lifetime is named here
[INFO] [stdout]     |                              |                |                                     |   |
[INFO] [stdout]     |                              |                |                                     |   the same lifetime is elided here
[INFO] [stdout]     |                              |                the lifetime is named here            the same lifetime is elided here
[INFO] [stdout]     |                              the lifetime is named here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: consistently use `'b`
[INFO] [stdout]     |
[INFO] [stdout] 458 |     pub fn iter_sources<'b>(&'b self, label: &'b V) -> Result<impl Iterator<Item = (&'b E, &'b V)> + 'b, VertexMissingError> {
[INFO] [stdout]     |                                                                                      ++     ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 14.48s
[INFO] running `Command { std: "docker" "inspect" "eb951d498b3ee57865a76481cc97a648182f2314419c074f38f5b934951b04d5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eb951d498b3ee57865a76481cc97a648182f2314419c074f38f5b934951b04d5", kill_on_drop: false }`
[INFO] [stdout] eb951d498b3ee57865a76481cc97a648182f2314419c074f38f5b934951b04d5
