[INFO] cloning repository https://github.com/Swiiz/simple_observable
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Swiiz/simple_observable" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSwiiz%2Fsimple_observable", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSwiiz%2Fsimple_observable'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3adfaab62df7a657bf0dab9674637ac1a6d119b9
[INFO] checking Swiiz/simple_observable against master#035b01b794602d5861daa43ac792f372f8981ed7 for 152214-denied-retry-0
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSwiiz%2Fsimple_observable" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Swiiz/simple_observable
[INFO] finished tweaking git repo https://github.com/Swiiz/simple_observable
[INFO] tweaked toml for git repo https://github.com/Swiiz/simple_observable written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Swiiz/simple_observable on toolchain 035b01b794602d5861daa43ac792f372f8981ed7
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+035b01b794602d5861daa43ac792f372f8981ed7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Swiiz/simple_observable 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" "+035b01b794602d5861daa43ac792f372f8981ed7" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded syn v2.0.101
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:61361fe0aef631f17e9d025a70c5a647956f8c671dd02950a60ad3f5cc5526d7" "/opt/rustwide/cargo-home/bin/cargo" "+035b01b794602d5861daa43ac792f372f8981ed7" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e8559f6d68c01935b984aa107c2bf12af043c2fbba27a3a671c6a0beaeb4f8fa
[INFO] running `Command { std: "docker" "start" "-a" "e8559f6d68c01935b984aa107c2bf12af043c2fbba27a3a671c6a0beaeb4f8fa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e8559f6d68c01935b984aa107c2bf12af043c2fbba27a3a671c6a0beaeb4f8fa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e8559f6d68c01935b984aa107c2bf12af043c2fbba27a3a671c6a0beaeb4f8fa", kill_on_drop: false }`
[INFO] [stdout] e8559f6d68c01935b984aa107c2bf12af043c2fbba27a3a671c6a0beaeb4f8fa
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:61361fe0aef631f17e9d025a70c5a647956f8c671dd02950a60ad3f5cc5526d7" "/opt/rustwide/cargo-home/bin/cargo" "+035b01b794602d5861daa43ac792f372f8981ed7" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0675204f47d343ba7216da37903e6cd9e2886a17f775ee46423f2bbd14a92177
[INFO] running `Command { std: "docker" "start" "-a" "0675204f47d343ba7216da37903e6cd9e2886a17f775ee46423f2bbd14a92177", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.95
[INFO] [stderr]    Compiling quote v1.0.40
[INFO] [stderr]    Compiling syn v2.0.101
[INFO] [stderr]    Compiling proc_macro v0.1.0 (/opt/rustwide/workdir/proc_macro)
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]   --> proc_macro/src/lib.rs:49:44
[INFO] [stdout]    |
[INFO] [stdout] 49 |     let opt_lt = fields.iter().next().map(|f| quote! { <'a> });
[INFO] [stdout]    |                                            ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking simple-observable v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `IterObserver` and `MaybeObservable`
[INFO] [stdout]  --> examples/atomic.rs:4:43
[INFO] [stdout]   |
[INFO] [stdout] 4 |     Atomic, ChangeFilter, FilterObserver, IterObserver, MaybeObservable, Observable, Observer,
[INFO] [stdout]   |                                           ^^^^^^^^^^^^  ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.36s
[INFO] running `Command { std: "docker" "inspect" "0675204f47d343ba7216da37903e6cd9e2886a17f775ee46423f2bbd14a92177", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0675204f47d343ba7216da37903e6cd9e2886a17f775ee46423f2bbd14a92177", kill_on_drop: false }`
[INFO] [stdout] 0675204f47d343ba7216da37903e6cd9e2886a17f775ee46423f2bbd14a92177