[INFO] cloning repository https://github.com/otdavies/rust_shared_utilties
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/otdavies/rust_shared_utilties" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fotdavies%2Frust_shared_utilties", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fotdavies%2Frust_shared_utilties'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ebadd6a142c4566e849462e5002d4422b7c08b8e
[INFO] testing otdavies/rust_shared_utilties against master#c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38 for pr-146098-7
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fotdavies%2Frust_shared_utilties" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/otdavies/rust_shared_utilties
[INFO] finished tweaking git repo https://github.com/otdavies/rust_shared_utilties
[INFO] tweaked toml for git repo https://github.com/otdavies/rust_shared_utilties written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/otdavies/rust_shared_utilties 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 git repo https://github.com/otdavies/rust_shared_utilties 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] f6a03ebdda677ee2c100b0d3b94f77bacc26903e81052ea599e6263392188fb7
[INFO] running `Command { std: "docker" "start" "-a" "f6a03ebdda677ee2c100b0d3b94f77bacc26903e81052ea599e6263392188fb7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f6a03ebdda677ee2c100b0d3b94f77bacc26903e81052ea599e6263392188fb7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f6a03ebdda677ee2c100b0d3b94f77bacc26903e81052ea599e6263392188fb7", kill_on_drop: false }`
[INFO] [stdout] f6a03ebdda677ee2c100b0d3b94f77bacc26903e81052ea599e6263392188fb7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] d161e64a5a6719c451503e798a485cc08819caab25d97e24235393a62ebac8e4
[INFO] running `Command { std: "docker" "start" "-a" "d161e64a5a6719c451503e798a485cc08819caab25d97e24235393a62ebac8e4", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust_shared_utilities v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: method `unsubscribe` is never used
[INFO] [stdout]   --> src/patterns/observer.rs:21:8
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub trait IListen<'a, T> {
[INFO] [stdout]    |           ------- method in this trait
[INFO] [stdout] 20 |     fn subscribe(&mut self, observer: impl IObserve<T> + 'a);
[INFO] [stdout] 21 |     fn unsubscribe(&mut self, observer: impl IObserve<T> + 'a);
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.17s
[INFO] running `Command { std: "docker" "inspect" "d161e64a5a6719c451503e798a485cc08819caab25d97e24235393a62ebac8e4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d161e64a5a6719c451503e798a485cc08819caab25d97e24235393a62ebac8e4", kill_on_drop: false }`
[INFO] [stdout] d161e64a5a6719c451503e798a485cc08819caab25d97e24235393a62ebac8e4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] da242957104bbade14e0809b8a28179575206fabf022b75e9c91c5ada993f4a3
[INFO] running `Command { std: "docker" "start" "-a" "da242957104bbade14e0809b8a28179575206fabf022b75e9c91c5ada993f4a3", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust_shared_utilities v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: method `unsubscribe` is never used
[INFO] [stdout]   --> src/patterns/observer.rs:21:8
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub trait IListen<'a, T> {
[INFO] [stdout]    |           ------- method in this trait
[INFO] [stdout] 20 |     fn subscribe(&mut self, observer: impl IObserve<T> + 'a);
[INFO] [stdout] 21 |     fn unsubscribe(&mut self, observer: impl IObserve<T> + 'a);
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.11s
[INFO] running `Command { std: "docker" "inspect" "da242957104bbade14e0809b8a28179575206fabf022b75e9c91c5ada993f4a3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "da242957104bbade14e0809b8a28179575206fabf022b75e9c91c5ada993f4a3", kill_on_drop: false }`
[INFO] [stdout] da242957104bbade14e0809b8a28179575206fabf022b75e9c91c5ada993f4a3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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", kill_on_drop: false }`
[INFO] [stdout] 2b7c9bc7a472c2387948f8cd86b98c676d9aca46d239c3c2cb80089a0084b145
[INFO] running `Command { std: "docker" "start" "-a" "2b7c9bc7a472c2387948f8cd86b98c676d9aca46d239c3c2cb80089a0084b145", kill_on_drop: false }`
[INFO] [stderr] warning: method `unsubscribe` is never used
[INFO] [stderr]   --> src/patterns/observer.rs:21:8
[INFO] [stderr]    |
[INFO] [stderr] 19 | pub trait IListen<'a, T> {
[INFO] [stderr]    |           ------- method in this trait
[INFO] [stderr] 20 |     fn subscribe(&mut self, observer: impl IObserve<T> + 'a);
[INFO] [stderr] 21 |     fn unsubscribe(&mut self, observer: impl IObserve<T> + 'a);
[INFO] [stderr]    |        ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `rust_shared_utilities` (bin "rust_shared_utilities" test) generated 1 warning
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/rust_shared_utilities-374a404cc32b0ee8)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "2b7c9bc7a472c2387948f8cd86b98c676d9aca46d239c3c2cb80089a0084b145", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2b7c9bc7a472c2387948f8cd86b98c676d9aca46d239c3c2cb80089a0084b145", kill_on_drop: false }`
[INFO] [stdout] 2b7c9bc7a472c2387948f8cd86b98c676d9aca46d239c3c2cb80089a0084b145