[INFO] fetching crate blackboard 1.1.0...
[INFO] testing blackboard-1.1.0 against master#c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38 for pr-146098-7
[INFO] extracting crate blackboard 1.1.0 into /workspace/builds/worker-3-tc1/source
[INFO] started tweaking crates.io crate blackboard 1.1.0
[INFO] finished tweaking crates.io crate blackboard 1.1.0
[INFO] tweaked toml for crates.io crate blackboard 1.1.0 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate blackboard 1.1.0 on toolchain c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate blackboard 1.1.0 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" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d060c546bbb247daf61f3254020ecbed084a0862a544d7bc7addc49a529bdf30
[INFO] running `Command { std: "docker" "start" "-a" "d060c546bbb247daf61f3254020ecbed084a0862a544d7bc7addc49a529bdf30", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d060c546bbb247daf61f3254020ecbed084a0862a544d7bc7addc49a529bdf30", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d060c546bbb247daf61f3254020ecbed084a0862a544d7bc7addc49a529bdf30", kill_on_drop: false }`
[INFO] [stdout] d060c546bbb247daf61f3254020ecbed084a0862a544d7bc7addc49a529bdf30
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d890a243bafc428b3a2177cbaa952b2a5adb1e2fd8e1b6200e9e0c31ff6add8a
[INFO] running `Command { std: "docker" "start" "-a" "d890a243bafc428b3a2177cbaa952b2a5adb1e2fd8e1b6200e9e0c31ff6add8a", kill_on_drop: false }`
[INFO] [stderr]    Compiling blackboard v1.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `Kitchen` is never constructed
[INFO] [stdout]  --> src/main.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | struct Kitchen { 
[INFO] [stdout]   |        ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `roast` and `bake` are never used
[INFO] [stdout]   --> src/main.rs:8:8
[INFO] [stdout]    |
[INFO] [stdout]  7 | impl Kitchen {
[INFO] [stdout]    | ------------ methods in this implementation
[INFO] [stdout]  8 |     fn roast(&mut self, food: &mut &str) {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 16 |     fn bake(&mut self, food: &mut &str) {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.57s
[INFO] running `Command { std: "docker" "inspect" "d890a243bafc428b3a2177cbaa952b2a5adb1e2fd8e1b6200e9e0c31ff6add8a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d890a243bafc428b3a2177cbaa952b2a5adb1e2fd8e1b6200e9e0c31ff6add8a", kill_on_drop: false }`
[INFO] [stdout] d890a243bafc428b3a2177cbaa952b2a5adb1e2fd8e1b6200e9e0c31ff6add8a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b5b82eb3adafd872234d2495c8a636d52ff918e8b2a5210361404b4ee08b746e
[INFO] running `Command { std: "docker" "start" "-a" "b5b82eb3adafd872234d2495c8a636d52ff918e8b2a5210361404b4ee08b746e", kill_on_drop: false }`
[INFO] [stderr]    Compiling blackboard v1.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0631]: type mismatch in function arguments
[INFO] [stdout]    --> src/lib.rs:159:30
[INFO] [stdout]     |
[INFO] [stdout] 155 |         fn change(_: &&str) {
[INFO] [stdout]     |         ------------------- found signature defined here
[INFO] [stdout] ...
[INFO] [stdout] 159 |         bb.subscribe("Park", change);
[INFO] [stdout]     |            ---------         ^^^^^^ expected due to this
[INFO] [stdout]     |            |
[INFO] [stdout]     |            required by a bound introduced by this call
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected function signature `for<'a> fn(&'a mut &_) -> _`
[INFO] [stdout]                found function signature `fn(&&_) -> _`
[INFO] [stdout] note: required for `for<'a, 'b> fn(&'a &'b str) {change}` to implement `Subscriptor<&str>`
[INFO] [stdout]    --> src/lib.rs:10:12
[INFO] [stdout]     |
[INFO] [stdout]  10 | impl<T, F> Subscriptor<T> for F 
[INFO] [stdout]     |            ^^^^^^^^^^^^^^     ^
[INFO] [stdout]  11 |     where F: FnMut(&mut T)
[INFO] [stdout]     |              ------------- unsatisfied trait bound introduced here
[INFO] [stdout] note: required by a bound in `BlackBoard::<'a, Section, Type>::subscribe`
[INFO] [stdout]    --> src/lib.rs:70:27
[INFO] [stdout]     |
[INFO] [stdout]  67 |     pub fn subscribe(
[INFO] [stdout]     |            --------- required by a bound in this associated function
[INFO] [stdout] ...
[INFO] [stdout]  70 |         subscriptor: impl Subscriptor<Type> + 'a
[INFO] [stdout]     |                           ^^^^^^^^^^^^^^^^^ required by this bound in `BlackBoard::<'a, Section, Type>::subscribe`
[INFO] [stdout] help: consider wrapping the function in a closure
[INFO] [stdout]     |
[INFO] [stdout] 159 |         bb.subscribe("Park", |arg0: &mut &str| change(&&**arg0));
[INFO] [stdout]     |                              +++++++++++++++++       ++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0631`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `blackboard` (lib test) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: struct `Kitchen` is never constructed
[INFO] [stdout]  --> src/main.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | struct Kitchen { 
[INFO] [stdout]   |        ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `roast` and `bake` are never used
[INFO] [stdout]   --> src/main.rs:8:8
[INFO] [stdout]    |
[INFO] [stdout]  7 | impl Kitchen {
[INFO] [stdout]    | ------------ methods in this implementation
[INFO] [stdout]  8 |     fn roast(&mut self, food: &mut &str) {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 16 |     fn bake(&mut self, food: &mut &str) {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "b5b82eb3adafd872234d2495c8a636d52ff918e8b2a5210361404b4ee08b746e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b5b82eb3adafd872234d2495c8a636d52ff918e8b2a5210361404b4ee08b746e", kill_on_drop: false }`
[INFO] [stdout] b5b82eb3adafd872234d2495c8a636d52ff918e8b2a5210361404b4ee08b746e
