[INFO] cloning repository https://github.com/AJTJ/rust_design_patterns
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/AJTJ/rust_design_patterns" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAJTJ%2Frust_design_patterns", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAJTJ%2Frust_design_patterns'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4b6e7d7789d157833886a2ea1f7d1917d22b78ee
[INFO] checking AJTJ/rust_design_patterns against try#f77b5bc6c7c84df104f86b0dd01d9490e3923fa8 for pr-147834
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAJTJ%2Frust_design_patterns" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/AJTJ/rust_design_patterns
[INFO] finished tweaking git repo https://github.com/AJTJ/rust_design_patterns
[INFO] tweaked toml for git repo https://github.com/AJTJ/rust_design_patterns written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/AJTJ/rust_design_patterns on toolchain f77b5bc6c7c84df104f86b0dd01d9490e3923fa8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f77b5bc6c7c84df104f86b0dd01d9490e3923fa8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/AJTJ/rust_design_patterns 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" "+f77b5bc6c7c84df104f86b0dd01d9490e3923fa8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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" "+f77b5bc6c7c84df104f86b0dd01d9490e3923fa8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 96831e608efb5a8bc450f45a6710598269f204b0d1c5a23ff1426726a24bd912
[INFO] running `Command { std: "docker" "start" "-a" "96831e608efb5a8bc450f45a6710598269f204b0d1c5a23ff1426726a24bd912", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "96831e608efb5a8bc450f45a6710598269f204b0d1c5a23ff1426726a24bd912", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "96831e608efb5a8bc450f45a6710598269f204b0d1c5a23ff1426726a24bd912", kill_on_drop: false }`
[INFO] [stdout] 96831e608efb5a8bc450f45a6710598269f204b0d1c5a23ff1426726a24bd912
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+f77b5bc6c7c84df104f86b0dd01d9490e3923fa8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 31244bdfecf3e9cba19cc27b0db03ed38304ce2772b10f2a0287b9184670f684
[INFO] running `Command { std: "docker" "start" "-a" "31244bdfecf3e9cba19cc27b0db03ed38304ce2772b10f2a0287b9184670f684", kill_on_drop: false }`
[INFO] [stderr]     Checking design_patterns v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/design_patterns/raii.rs:39:28
[INFO] [stdout]    |
[INFO] [stdout] 32 | impl<T> Mutex<T> {
[INFO] [stdout]    |      - expected this type parameter
[INFO] [stdout] ...
[INFO] [stdout] 39 |         MutexGuard { data: self }
[INFO] [stdout]    |                            ^^^^ expected `&T`, found `&Mutex<T>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected reference `&T`
[INFO] [stdout]               found reference `&raii::Mutex<T>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]   --> src/design_patterns/creational_fold.rs:41:33
[INFO] [stdout]    |
[INFO] [stdout] 41 |         fn fold_expr(&mut self, e: Box<Expr>) -> Box<Expr> {
[INFO] [stdout]    |                                 ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]   --> src/design_patterns/creational_fold.rs:52:29
[INFO] [stdout]    |
[INFO] [stdout] 52 |     fn fold_name(&mut self, n: Box<Name>) -> Box<Name> {
[INFO] [stdout]    |                             ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]   --> src/design_patterns/structural_struct_composing.rs:56:9
[INFO] [stdout]    |
[INFO] [stdout] 56 |     let y = bar_2(&mut a.c);
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `time`
[INFO] [stdout]   --> src/idioms/constructors_default.rs:35:9
[INFO] [stdout]    |
[INFO] [stdout] 35 |     let time = Time::default();
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_time`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `partial_time`
[INFO] [stdout]   --> src/idioms/constructors_default.rs:37:9
[INFO] [stdout]    |
[INFO] [stdout] 37 |     let partial_time = Time {
[INFO] [stdout]    |         ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_partial_time`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/idioms/iterate_option.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 12 |     let mut just_orange = vec!["orange"];
[INFO] [stdout]    |         ----^^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `the_foo`
[INFO] [stdout]   --> src/idioms/non_exhaustive.rs:19:25
[INFO] [stdout]    |
[INFO] [stdout] 19 |     let MyMod::S { foo: the_foo } = s;
[INFO] [stdout]    |                         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_the_foo`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]   --> src/idioms/non_exhaustive.rs:26:42
[INFO] [stdout]    |
[INFO] [stdout] 26 |         MyMod::AdmitMoreVariants::VarC { a } => println!("is C"),
[INFO] [stdout]    |                                          ^ help: try ignoring the field: `a: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `closure`
[INFO] [stdout]   --> src/idioms/pass_var_closure.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 12 |     let closure = {
[INFO] [stdout]    |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_closure`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0308`.
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/design_patterns/raii.rs:39:28
[INFO] [stdout]    |
[INFO] [stdout] 32 | impl<T> Mutex<T> {
[INFO] [stdout]    |      - expected this type parameter
[INFO] [stdout] ...
[INFO] [stdout] 39 |         MutexGuard { data: self }
[INFO] [stdout]    |                            ^^^^ expected `&T`, found `&Mutex<T>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected reference `&T`
[INFO] [stdout]               found reference `&raii::Mutex<T>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `design_patterns` (bin "design_patterns") due to 1 previous error; 9 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]   --> src/design_patterns/creational_fold.rs:41:33
[INFO] [stdout]    |
[INFO] [stdout] 41 |         fn fold_expr(&mut self, e: Box<Expr>) -> Box<Expr> {
[INFO] [stdout]    |                                 ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]   --> src/design_patterns/creational_fold.rs:52:29
[INFO] [stdout]    |
[INFO] [stdout] 52 |     fn fold_name(&mut self, n: Box<Name>) -> Box<Name> {
[INFO] [stdout]    |                             ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]   --> src/design_patterns/structural_struct_composing.rs:56:9
[INFO] [stdout]    |
[INFO] [stdout] 56 |     let y = bar_2(&mut a.c);
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `time`
[INFO] [stdout]   --> src/idioms/constructors_default.rs:35:9
[INFO] [stdout]    |
[INFO] [stdout] 35 |     let time = Time::default();
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_time`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `partial_time`
[INFO] [stdout]   --> src/idioms/constructors_default.rs:37:9
[INFO] [stdout]    |
[INFO] [stdout] 37 |     let partial_time = Time {
[INFO] [stdout]    |         ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_partial_time`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/idioms/iterate_option.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 12 |     let mut just_orange = vec!["orange"];
[INFO] [stdout]    |         ----^^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `the_foo`
[INFO] [stdout]   --> src/idioms/non_exhaustive.rs:19:25
[INFO] [stdout]    |
[INFO] [stdout] 19 |     let MyMod::S { foo: the_foo } = s;
[INFO] [stdout]    |                         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_the_foo`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]   --> src/idioms/non_exhaustive.rs:26:42
[INFO] [stdout]    |
[INFO] [stdout] 26 |         MyMod::AdmitMoreVariants::VarC { a } => println!("is C"),
[INFO] [stdout]    |                                          ^ help: try ignoring the field: `a: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `closure`
[INFO] [stdout]   --> src/idioms/pass_var_closure.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 12 |     let closure = {
[INFO] [stdout]    |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_closure`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0308`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `design_patterns` (bin "design_patterns" test) due to 1 previous error; 9 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "31244bdfecf3e9cba19cc27b0db03ed38304ce2772b10f2a0287b9184670f684", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "31244bdfecf3e9cba19cc27b0db03ed38304ce2772b10f2a0287b9184670f684", kill_on_drop: false }`
[INFO] [stdout] 31244bdfecf3e9cba19cc27b0db03ed38304ce2772b10f2a0287b9184670f684
