[INFO] fetching crate task 0.0.1...
[INFO] checking task-0.0.1 against try#f47dd4da3ae8c32c9e65d307bfe640b143e674df for pr-77526
[INFO] extracting crate task 0.0.1 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate task 0.0.1 on toolchain f47dd4da3ae8c32c9e65d307bfe640b143e674df
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate task 0.0.1
[INFO] finished tweaking crates.io crate task 0.0.1
[INFO] tweaked toml for crates.io crate task 0.0.1 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "fetch" "--locked" "--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/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5a6d4ba614d4449606e50a0be1987f391d03da5c2ae0eb13775d69e9d6916541
[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" "5a6d4ba614d4449606e50a0be1987f391d03da5c2ae0eb13775d69e9d6916541", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5a6d4ba614d4449606e50a0be1987f391d03da5c2ae0eb13775d69e9d6916541", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5a6d4ba614d4449606e50a0be1987f391d03da5c2ae0eb13775d69e9d6916541", kill_on_drop: false }`
[INFO] [stdout] 5a6d4ba614d4449606e50a0be1987f391d03da5c2ae0eb13775d69e9d6916541
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] c30854ccc105c8f216851ceb07defc9cd6b9bf4ef6a01cd2b9dee0665775bcf7
[INFO] running `Command { std: "docker" "start" "-a" "c30854ccc105c8f216851ceb07defc9cd6b9bf4ef6a01cd2b9dee0665775bcf7", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.79
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling regex v0.2.11
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]     Checking log v0.3.9
[INFO] [stderr]     Checking aho-corasick v0.6.10
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking threadpool v1.7.1
[INFO] [stderr]     Checking crontab v0.1.0
[INFO] [stderr]     Checking task v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/task.rs:12:19
[INFO] [stdout]    |
[INFO] [stdout] 12 |   pub handle: Box<FnMut() + Send + Sync>, // TODO: Drop 'Sync' ?
[INFO] [stdout]    |                   ^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut() + Send + Sync`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/task.rs:12:19
[INFO] [stdout]    |
[INFO] [stdout] 12 |   pub handle: Box<FnMut() + Send + Sync>, // TODO: Drop 'Sync' ?
[INFO] [stdout]    |                   ^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut() + Send + Sync`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.21s
[INFO] running `Command { std: "docker" "inspect" "c30854ccc105c8f216851ceb07defc9cd6b9bf4ef6a01cd2b9dee0665775bcf7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c30854ccc105c8f216851ceb07defc9cd6b9bf4ef6a01cd2b9dee0665775bcf7", kill_on_drop: false }`
[INFO] [stdout] c30854ccc105c8f216851ceb07defc9cd6b9bf4ef6a01cd2b9dee0665775bcf7