[INFO] fetching crate async_cell 0.2.2...
[INFO] checking async_cell-0.2.2 against try#306c6aded24f02440063be828ebe601fe5eb8323 for pr-133502-3
[INFO] extracting crate async_cell 0.2.2 into /workspace/builds/worker-4-tc2/source
[INFO] validating manifest of crates.io crate async_cell 0.2.2 on toolchain 306c6aded24f02440063be828ebe601fe5eb8323
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+306c6aded24f02440063be828ebe601fe5eb8323" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate async_cell 0.2.2
[INFO] finished tweaking crates.io crate async_cell 0.2.2
[INFO] tweaked toml for crates.io crate async_cell 0.2.2 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+306c6aded24f02440063be828ebe601fe5eb8323" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 76 packages to latest compatible versions
[INFO] [stderr]       Adding loom v0.5.6 (available: v0.7.2)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+306c6aded24f02440063be828ebe601fe5eb8323" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+306c6aded24f02440063be828ebe601fe5eb8323" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 81cf94444f6661eb6941147de684cee660344e94940a27d78431a1cd389e0408
[INFO] running `Command { std: "docker" "start" "-a" "81cf94444f6661eb6941147de684cee660344e94940a27d78431a1cd389e0408", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "81cf94444f6661eb6941147de684cee660344e94940a27d78431a1cd389e0408", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "81cf94444f6661eb6941147de684cee660344e94940a27d78431a1cd389e0408", kill_on_drop: false }`
[INFO] [stdout] 81cf94444f6661eb6941147de684cee660344e94940a27d78431a1cd389e0408
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+306c6aded24f02440063be828ebe601fe5eb8323" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7e61c4ae53f8e0b00fb42d46896022858e2a2d962ac75955bb2fbe2673fa0f0d
[INFO] running `Command { std: "docker" "start" "-a" "7e61c4ae53f8e0b00fb42d46896022858e2a2d962ac75955bb2fbe2673fa0f0d", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v2.0.100
[INFO] [stderr]     Checking regex-syntax v0.8.5
[INFO] [stderr]    Compiling generator v0.7.5
[INFO] [stderr]     Checking scoped-tls v1.0.1
[INFO] [stderr]     Checking async_cell v0.2.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking matchers v0.1.0
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/internal.rs:77:8
[INFO] [stdout]    |
[INFO] [stdout] 74 | pub trait CellInner {
[INFO] [stdout]    |           --------- associated function in this trait
[INFO] [stdout] ...
[INFO] [stdout] 77 |     fn new(value: State<Self::Value>) -> Self;
[INFO] [stdout]    |        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking regex-automata v0.4.9
[INFO] [stderr]     Checking regex v1.11.1
[INFO] [stderr]    Compiling tracing-attributes v0.1.28
[INFO] [stderr]     Checking tracing v0.1.41
[INFO] [stderr]     Checking tracing-subscriber v0.3.19
[INFO] [stderr]     Checking loom v0.5.6
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/internal.rs:77:8
[INFO] [stdout]    |
[INFO] [stdout] 74 | pub trait CellInner {
[INFO] [stdout]    |           --------- associated function in this trait
[INFO] [stdout] ...
[INFO] [stdout] 77 |     fn new(value: State<Self::Value>) -> Self;
[INFO] [stdout]    |        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 16.47s
[INFO] running `Command { std: "docker" "inspect" "7e61c4ae53f8e0b00fb42d46896022858e2a2d962ac75955bb2fbe2673fa0f0d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7e61c4ae53f8e0b00fb42d46896022858e2a2d962ac75955bb2fbe2673fa0f0d", kill_on_drop: false }`
[INFO] [stdout] 7e61c4ae53f8e0b00fb42d46896022858e2a2d962ac75955bb2fbe2673fa0f0d