[INFO] fetching crate acts-next 0.15.7...
[INFO] checking acts-next-0.15.7 against master#bbe853615821442ef11d6cd42a30a73432b38d89 for pr-154205
[INFO] extracting crate acts-next 0.15.7 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate acts-next 0.15.7
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate acts-next 0.15.7
[INFO] tweaked toml for crates.io crate acts-next 0.15.7 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate acts-next 0.15.7 on toolchain bbe853615821442ef11d6cd42a30a73432b38d89
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bbe853615821442ef11d6cd42a30a73432b38d89" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate acts-next 0.15.7 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" "+bbe853615821442ef11d6cd42a30a73432b38d89" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+bbe853615821442ef11d6cd42a30a73432b38d89" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d6f1a2ce73804c9e38bc0a6d3f804f92972362e84165c3e31ae144ad1aa12cd9
[INFO] running `Command { std: "docker" "start" "-a" "d6f1a2ce73804c9e38bc0a6d3f804f92972362e84165c3e31ae144ad1aa12cd9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d6f1a2ce73804c9e38bc0a6d3f804f92972362e84165c3e31ae144ad1aa12cd9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d6f1a2ce73804c9e38bc0a6d3f804f92972362e84165c3e31ae144ad1aa12cd9", kill_on_drop: false }`
[INFO] [stdout] d6f1a2ce73804c9e38bc0a6d3f804f92972362e84165c3e31ae144ad1aa12cd9
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+bbe853615821442ef11d6cd42a30a73432b38d89" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 030c286fcf86000b561c147769a5ee205383e2787fe56e6a01c83afebac93cd3
[INFO] running `Command { std: "docker" "start" "-a" "030c286fcf86000b561c147769a5ee205383e2787fe56e6a01c83afebac93cd3", kill_on_drop: false }`
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[INFO] [stderr]     Checking acts-next v0.15.7 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `Iter` is never constructed
[INFO] [stdout]   --> src/model/vars.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub struct Iter<'a> {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Iter` is never constructed
[INFO] [stdout]   --> src/model/vars.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub struct Iter<'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 1m 48s
[INFO] running `Command { std: "docker" "inspect" "030c286fcf86000b561c147769a5ee205383e2787fe56e6a01c83afebac93cd3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "030c286fcf86000b561c147769a5ee205383e2787fe56e6a01c83afebac93cd3", kill_on_drop: false }`
[INFO] [stdout] 030c286fcf86000b561c147769a5ee205383e2787fe56e6a01c83afebac93cd3