[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] testing jjc914/cis198-homework3 against master#d98a5da813da67eb189387b8ccfb73cf481275d8+rustflags=-Copt-level=3 for pr-138759
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjjc914%2Fcis198-homework3" "/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/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-2-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/jjc914/cis198-homework3 on toolchain d98a5da813da67eb189387b8ccfb73cf481275d8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "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" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] af4329f2e4e584984086b2d7005380aeab7b49700f26b6fef65af59e57393fd4
[INFO] running `Command { std: "docker" "start" "-a" "af4329f2e4e584984086b2d7005380aeab7b49700f26b6fef65af59e57393fd4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "af4329f2e4e584984086b2d7005380aeab7b49700f26b6fef65af59e57393fd4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "af4329f2e4e584984086b2d7005380aeab7b49700f26b6fef65af59e57393fd4", kill_on_drop: false }`
[INFO] [stdout] af4329f2e4e584984086b2d7005380aeab7b49700f26b6fef65af59e57393fd4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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 -Copt-level=3" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8089b9cc6c94567afc078b1f6dd13b0f0bfa5e566546e3ab4d6258affa5ab19c
[INFO] running `Command { std: "docker" "start" "-a" "8089b9cc6c94567afc078b1f6dd13b0f0bfa5e566546e3ab4d6258affa5ab19c", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling libc v0.2.151
[INFO] [stderr]    Compiling aho-corasick v1.1.2
[INFO] [stderr]    Compiling syn v2.0.42
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling clap v2.34.0
[INFO] [stderr]    Compiling regex-automata v0.4.3
[INFO] [stderr]    Compiling serde_derive v1.0.193
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling regex v1.10.2
[INFO] [stderr]    Compiling structopt-derive v0.4.18
[INFO] [stderr]    Compiling serde v1.0.193
[INFO] [stderr]    Compiling structopt v0.3.26
[INFO] [stderr]    Compiling serde_json v1.0.108
[INFO] [stderr]    Compiling homework3 v0.1.0 (/opt/rustwide/workdir)
[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)]` 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: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/graph/mod.rs:458:30
[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 lifetimes get resolved as `'b`
[INFO] [stdout]     |                              |                |                                     |   |
[INFO] [stdout]     |                              |                |                                     |   the lifetimes get resolved as `'b`
[INFO] [stdout]     |                              |                these lifetimes flow to the output    the lifetimes get resolved as `'b`
[INFO] [stdout]     |                              these lifetimes flow to the output
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: one option is to 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 1m 40s
[INFO] running `Command { std: "docker" "inspect" "8089b9cc6c94567afc078b1f6dd13b0f0bfa5e566546e3ab4d6258affa5ab19c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8089b9cc6c94567afc078b1f6dd13b0f0bfa5e566546e3ab4d6258affa5ab19c", kill_on_drop: false }`
[INFO] [stdout] 8089b9cc6c94567afc078b1f6dd13b0f0bfa5e566546e3ab4d6258affa5ab19c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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 -Copt-level=3" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e58f6dcbcfb9279b03f222e4eeb724d99f5647064577021e86e73bbb9ac0d1bb
[INFO] running `Command { std: "docker" "start" "-a" "e58f6dcbcfb9279b03f222e4eeb724d99f5647064577021e86e73bbb9ac0d1bb", kill_on_drop: false }`
[INFO] [stderr]    Compiling homework3 v0.1.0 (/opt/rustwide/workdir)
[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)]` 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: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/graph/mod.rs:458:30
[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 lifetimes get resolved as `'b`
[INFO] [stdout]     |                              |                |                                     |   |
[INFO] [stdout]     |                              |                |                                     |   the lifetimes get resolved as `'b`
[INFO] [stdout]     |                              |                these lifetimes flow to the output    the lifetimes get resolved as `'b`
[INFO] [stdout]     |                              these lifetimes flow to the output
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: one option is to 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)]` 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: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/graph/mod.rs:458:30
[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 lifetimes get resolved as `'b`
[INFO] [stdout]     |                              |                |                                     |   |
[INFO] [stdout]     |                              |                |                                     |   the lifetimes get resolved as `'b`
[INFO] [stdout]     |                              |                these lifetimes flow to the output    the lifetimes get resolved as `'b`
[INFO] [stdout]     |                              these lifetimes flow to the output
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: one option is to 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 `test` profile [unoptimized + debuginfo] target(s) in 3.34s
[INFO] running `Command { std: "docker" "inspect" "e58f6dcbcfb9279b03f222e4eeb724d99f5647064577021e86e73bbb9ac0d1bb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e58f6dcbcfb9279b03f222e4eeb724d99f5647064577021e86e73bbb9ac0d1bb", kill_on_drop: false }`
[INFO] [stdout] e58f6dcbcfb9279b03f222e4eeb724d99f5647064577021e86e73bbb9ac0d1bb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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 -Copt-level=3" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 93728e08c532b3046de12111455ae3b1a1cf5400d4573ca79a453395ee2e3b15
[INFO] running `Command { std: "docker" "start" "-a" "93728e08c532b3046de12111455ae3b1a1cf5400d4573ca79a453395ee2e3b15", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `token`
[INFO] [stderr]    --> src/compiler/mod.rs:382:11
[INFO] [stderr]     |
[INFO] [stderr] 382 |                         let token = tokens.pop_front().unwrap();
[INFO] [stderr]     |                             ^^^^^ help: if this is intentional, prefix it with an underscore: `_token`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `token`
[INFO] [stderr]    --> src/compiler/mod.rs:392:11
[INFO] [stderr]     |
[INFO] [stderr] 392 |                         let token = tokens.pop_front().unwrap();
[INFO] [stderr]     |                             ^^^^^ help: if this is intentional, prefix it with an underscore: `_token`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `assembly`
[INFO] [stderr]    --> src/compiler/mod.rs:647:29
[INFO] [stderr]     |
[INFO] [stderr] 647 |     fn generate_decl_statement(assembly: &mut String, variable_offsets: &mut HashMap<String, usize>) {
[INFO] [stderr]     |                                ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_assembly`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `variable_offsets`
[INFO] [stderr]    --> src/compiler/mod.rs:647:52
[INFO] [stderr]     |
[INFO] [stderr] 647 |     fn generate_decl_statement(assembly: &mut String, variable_offsets: &mut HashMap<String, usize>) {
[INFO] [stderr]     |                                                       ^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_variable_offsets`
[INFO] [stderr] 
[INFO] [stderr] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stderr]    --> src/graph/mod.rs:458:30
[INFO] [stderr]     |
[INFO] [stderr] 458 |     pub fn iter_sources<'b>(&'b self, label: &'b V) -> Result<impl Iterator<Item = (&E, &V)> + 'b, VertexMissingError> {
[INFO] [stderr]     |                              ^^               ^^                                    --  --     -- the lifetimes get resolved as `'b`
[INFO] [stderr]     |                              |                |                                     |   |
[INFO] [stderr]     |                              |                |                                     |   the lifetimes get resolved as `'b`
[INFO] [stderr]     |                              |                these lifetimes flow to the output    the lifetimes get resolved as `'b`
[INFO] [stderr]     |                              these lifetimes flow to the output
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stderr] help: one option is to consistently use `'b`
[INFO] [stderr]     |
[INFO] [stderr] 458 |     pub fn iter_sources<'b>(&'b self, label: &'b V) -> Result<impl Iterator<Item = (&'b E, &'b V)> + 'b, VertexMissingError> {
[INFO] [stderr]     |                                                                                      ++     ++
[INFO] [stderr] 
[INFO] [stderr] warning: `homework3` (lib) generated 5 warnings
[INFO] [stderr] warning: `homework3` (lib test) generated 5 warnings (5 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/homework3-ebf4327dfbe02a71)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test graph::test_graph ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- graph::test_graph stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'graph::test_graph' panicked at src/graph/mod.rs:881:77:
[INFO] [stdout] called `Result::unwrap()` on an `Err` value: Os { code: 2, kind: NotFound, message: "No such file or directory" }
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x6029c8785f92 - std::backtrace_rs::backtrace::libunwind::trace::hd39b1f53d3cf9745
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x6029c8785f92 - std::backtrace_rs::backtrace::trace_unsynchronized::he91d9a75d4e3972b
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x6029c8785f92 - std::sys::backtrace::_print_fmt::hca46938f8c6e22cf
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/sys/backtrace.rs:66:9
[INFO] [stdout]    3:     0x6029c8785f92 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::ha499add612cccf8e
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/sys/backtrace.rs:39:26
[INFO] [stdout]    4:     0x6029c87ab4f3 - core::fmt::rt::Argument::fmt::hd21145b75a833b7a
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/core/src/fmt/rt.rs:173:76
[INFO] [stdout]    5:     0x6029c87ab4f3 - core::fmt::write::hb10c956f5235c8a4
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/core/src/fmt/mod.rs:1465:25
[INFO] [stdout]    6:     0x6029c87830c3 - std::io::default_write_fmt::hdb7615052be2ba4d
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x6029c87830c3 - std::io::Write::write_fmt::he1bcd251ec6e4153
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/io/mod.rs:1954:13
[INFO] [stdout]    8:     0x6029c8785de2 - std::sys::backtrace::BacktraceLock::print::hb47c770ef659fd10
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/sys/backtrace.rs:42:9
[INFO] [stdout]    9:     0x6029c87875ac - std::panicking::default_hook::{{closure}}::hdda8afb9d457a22c
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/panicking.rs:300:27
[INFO] [stdout]   10:     0x6029c8787402 - std::panicking::default_hook::h7c46b44874fe5c9a
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/panicking.rs:324:9
[INFO] [stdout]   11:     0x6029c874e864 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h178a5fcedee41e2f
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/alloc/src/boxed.rs:1985:9
[INFO] [stdout]   12:     0x6029c874e864 - test::test_main_with_exit_callback::{{closure}}::h951a41e0149d6d5d
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x6029c8787f8b - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h13602080f5b63276
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/alloc/src/boxed.rs:1985:9
[INFO] [stdout]   14:     0x6029c8787f8b - std::panicking::rust_panic_with_hook::ha6cb99ed099eb1c5
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/panicking.rs:841:13
[INFO] [stdout]   15:     0x6029c8787d5a - std::panicking::begin_panic_handler::{{closure}}::he11808bc797ee921
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/panicking.rs:706:13
[INFO] [stdout]   16:     0x6029c8786489 - std::sys::backtrace::__rust_end_short_backtrace::h9418807cb7346258
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/sys/backtrace.rs:168:18
[INFO] [stdout]   17:     0x6029c87879ed - __rustc[18fb429eef004894]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/panicking.rs:697:5
[INFO] [stdout]   18:     0x6029c87a9d70 - core::panicking::panic_fmt::hd890aeb12c3a3fc3
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/core/src/panicking.rs:75:14
[INFO] [stdout]   19:     0x6029c87aa116 - core::result::unwrap_failed::h31c9775ec1a50121
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/core/src/result.rs:1761:5
[INFO] [stdout]   20:     0x6029c870ca73 - core::result::Result<T,E>::unwrap::h7153d6f8d884e146
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/core/src/result.rs:1167:23
[INFO] [stdout]   21:     0x6029c870ca73 - homework3::graph::test_graph::h8397bf1db61ba3bb
[INFO] [stdout]                                at /opt/rustwide/workdir/src/graph/mod.rs:881:77
[INFO] [stdout]   22:     0x6029c87114a9 - homework3::graph::test_graph::{{closure}}::h3ebdd1a045503345
[INFO] [stdout]                                at /opt/rustwide/workdir/src/graph/mod.rs:780:16
[INFO] [stdout]   23:     0x6029c87114a9 - core::ops::function::FnOnce::call_once::hd260ff644d8a775c
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   24:     0x6029c8753feb - core::ops::function::FnOnce::call_once::h2869fb5b0a2b0bdc
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   25:     0x6029c8753feb - test::__rust_begin_short_backtrace::h7dd7142bd62fa711
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/test/src/lib.rs:648:18
[INFO] [stdout]   26:     0x6029c87531de - test::run_test_in_process::{{closure}}::h43a753f038d36b3f
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/test/src/lib.rs:671:74
[INFO] [stdout]   27:     0x6029c87531de - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h0ca95dd3e12d1e16
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   28:     0x6029c87531de - std::panicking::catch_unwind::do_call::he308587d70ac34ba
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/panicking.rs:589:40
[INFO] [stdout]   29:     0x6029c87531de - std::panicking::catch_unwind::h30dcba31973e8fb0
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/panicking.rs:552:19
[INFO] [stdout]   30:     0x6029c87531de - std::panic::catch_unwind::hfb68364e5621fbee
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/panic.rs:359:14
[INFO] [stdout]   31:     0x6029c87531de - test::run_test_in_process::hcdcc2977903b998a
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/test/src/lib.rs:671:27
[INFO] [stdout]   32:     0x6029c87531de - test::run_test::{{closure}}::h544a6550958c5d14
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/test/src/lib.rs:592:43
[INFO] [stdout]   33:     0x6029c8716d54 - test::run_test::{{closure}}::hb172e48ebe2b92c7
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/test/src/lib.rs:622:41
[INFO] [stdout]   34:     0x6029c8716d54 - std::sys::backtrace::__rust_begin_short_backtrace::h7e79d8706638bea0
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/sys/backtrace.rs:152:18
[INFO] [stdout]   35:     0x6029c871a72a - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::hc4a275f1e71b8ab0
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/thread/mod.rs:559:17
[INFO] [stdout]   36:     0x6029c871a72a - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h01ed0d242df78cfd
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   37:     0x6029c871a72a - std::panicking::catch_unwind::do_call::h052f373fb905fee0
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/panicking.rs:589:40
[INFO] [stdout]   38:     0x6029c871a72a - std::panicking::catch_unwind::hb425d20c8ffb09c8
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/panicking.rs:552:19
[INFO] [stdout]   39:     0x6029c871a72a - std::panic::catch_unwind::ha0d5dfbf18fdeda5
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/panic.rs:359:14
[INFO] [stdout]   40:     0x6029c871a72a - std::thread::Builder::spawn_unchecked_::{{closure}}::hbe79182bd37949c7
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/thread/mod.rs:557:30
[INFO] [stdout]   41:     0x6029c871a72a - core::ops::function::FnOnce::call_once{{vtable.shim}}::hc096c4a06972fde5
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   42:     0x6029c878aee7 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h47377e27fb938a26
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/alloc/src/boxed.rs:1971:9
[INFO] [stdout]   43:     0x6029c878aee7 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h72f1fe5d095abf57
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/alloc/src/boxed.rs:1971:9
[INFO] [stdout]   44:     0x6029c878aee7 - std::sys::pal::unix::thread::Thread::new::thread_start::h0a4d8e1b9c0d38cf
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/sys/pal/unix/thread.rs:97:17
[INFO] [stdout]   45:     0x7abb678b3aa4 - <unknown>
[INFO] [stdout]   46:     0x7abb67940a34 - clone
[INFO] [stdout]   47:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     graph::test_graph
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 0 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.04s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass `--lib`
[INFO] running `Command { std: "docker" "inspect" "93728e08c532b3046de12111455ae3b1a1cf5400d4573ca79a453395ee2e3b15", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "93728e08c532b3046de12111455ae3b1a1cf5400d4573ca79a453395ee2e3b15", kill_on_drop: false }`
[INFO] [stdout] 93728e08c532b3046de12111455ae3b1a1cf5400d4573ca79a453395ee2e3b15
