[INFO] cloning repository https://github.com/aidanhs/slow-ref-stdweb-example
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/aidanhs/slow-ref-stdweb-example" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faidanhs%2Fslow-ref-stdweb-example", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faidanhs%2Fslow-ref-stdweb-example'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3fe6f72f6dd92ca0027a4334e1f00124fee9a74f
[INFO] checking aidanhs/slow-ref-stdweb-example against beta for pr-78714
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faidanhs%2Fslow-ref-stdweb-example" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/aidanhs/slow-ref-stdweb-example on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/aidanhs/slow-ref-stdweb-example
[INFO] finished tweaking git repo https://github.com/aidanhs/slow-ref-stdweb-example
[INFO] tweaked toml for git repo https://github.com/aidanhs/slow-ref-stdweb-example written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/aidanhs/slow-ref-stdweb-example already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 91a77576e95af0bdd8e93f5640007c003fb2268068b283527d40d754365db0ff
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "91a77576e95af0bdd8e93f5640007c003fb2268068b283527d40d754365db0ff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "91a77576e95af0bdd8e93f5640007c003fb2268068b283527d40d754365db0ff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "91a77576e95af0bdd8e93f5640007c003fb2268068b283527d40d754365db0ff", kill_on_drop: false }`
[INFO] [stdout] 91a77576e95af0bdd8e93f5640007c003fb2268068b283527d40d754365db0ff
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 241add6b91230d0ce26c2e24e652fbafd0e1c504b541b63a2e48c72c209b56a9
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "241add6b91230d0ce26c2e24e652fbafd0e1c504b541b63a2e48c72c209b56a9", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.59
[INFO] [stderr]     Checking libc v0.2.41
[INFO] [stderr]    Compiling stdweb v0.4.6
[INFO] [stderr]     Checking itoa v0.4.1
[INFO] [stderr]     Checking discard v1.0.3
[INFO] [stderr]     Checking byteorder v1.2.3
[INFO] [stderr]    Compiling proc-macro2 v0.4.3
[INFO] [stderr]    Compiling proc-macro2 v0.2.3
[INFO] [stderr]     Checking log v0.4.1
[INFO] [stderr]    Compiling synstructure v0.6.1
[INFO] [stderr]    Compiling quote v0.4.2
[INFO] [stderr]    Compiling quote v0.6.2
[INFO] [stderr]    Compiling syn v0.12.15
[INFO] [stderr]    Compiling syn v0.14.0
[INFO] [stderr]     Checking backtrace-sys v0.1.16
[INFO] [stderr]     Checking iovec v0.1.2
[INFO] [stderr]    Compiling failure_derive v0.1.1
[INFO] [stderr]     Checking backtrace v0.3.7
[INFO] [stderr]     Checking bytes v0.4.7
[INFO] [stderr]     Checking http v0.1.5
[INFO] [stderr]     Checking failure v0.1.1
[INFO] [stderr]    Compiling serde_derive v1.0.59
[INFO] [stderr]     Checking serde_json v1.0.17
[INFO] [stderr]    Compiling stdweb-derive v0.4.0
[INFO] [stderr]     Checking web_logger v0.1.0
[INFO] [stderr]     Checking yew v0.4.0 (https://github.com/DenisKolodin/yew.git?rev=f392d7e#f392d7ef)
[INFO] [stderr]     Checking logobble-dataflow-page v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `env`
[INFO] [stdout]   --> src/main.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |     let env = app.mount(elt);
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_env`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `env`
[INFO] [stdout]   --> src/main.rs:78:46
[INFO] [stdout]    |
[INFO] [stdout] 78 |     fn update(&mut self, msg: Self::Message, env: &mut Env<CTX, Self>) -> ShouldRender {
[INFO] [stdout]    |                                              ^^^ help: if this is intentional, prefix it with an underscore: `_env`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `env`
[INFO] [stdout]   --> src/main.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |     let env = app.mount(elt);
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_env`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `env`
[INFO] [stdout]   --> src/main.rs:78:46
[INFO] [stdout]    |
[INFO] [stdout] 78 |     fn update(&mut self, msg: Self::Message, env: &mut Env<CTX, Self>) -> ShouldRender {
[INFO] [stdout]    |                                              ^^^ help: if this is intentional, prefix it with an underscore: `_env`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 54.86s
[INFO] running `Command { std: "docker" "inspect" "241add6b91230d0ce26c2e24e652fbafd0e1c504b541b63a2e48c72c209b56a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "241add6b91230d0ce26c2e24e652fbafd0e1c504b541b63a2e48c72c209b56a9", kill_on_drop: false }`
[INFO] [stdout] 241add6b91230d0ce26c2e24e652fbafd0e1c504b541b63a2e48c72c209b56a9