[INFO] crate async-coap 0.1.0 is already in cache
[INFO] checking async-coap-0.1.0 against master#f834695781d00daa61d04e11720403ff32cb0e78 for pr-63831
[INFO] extracting crate async-coap 0.1.0 into work/builds/worker-3/source
[INFO] validating manifest of crates.io crate async-coap 0.1.0 on toolchain f834695781d00daa61d04e11720403ff32cb0e78
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+f834695781d00daa61d04e11720403ff32cb0e78" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate async-coap 0.1.0
[INFO] finished tweaking crates.io crate async-coap 0.1.0
[INFO] tweaked toml for crates.io crate async-coap 0.1.0 written to work/builds/worker-3/source/Cargo.toml
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+f834695781d00daa61d04e11720403ff32cb0e78" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+f834695781d00daa61d04e11720403ff32cb0e78" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/mnt/big/crater/work/builds/worker-3/source:/opt/rustwide/workdir:ro,Z" "-v" "/mnt/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+f834695781d00daa61d04e11720403ff32cb0e78" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] d984d99a4d82e9ed5b8abb2df2bce2911577489afb404addd9b1a88c55689c68
[INFO] running `"docker" "start" "-a" "d984d99a4d82e9ed5b8abb2df2bce2911577489afb404addd9b1a88c55689c68"`
[INFO] [stderr]    Compiling syn v1.0.5
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]     Checking futures-core-preview v0.3.0-alpha.18
[INFO] [stderr]    Compiling proc-macro-nested v0.1.3
[INFO] [stderr]     Checking futures-io-preview v0.3.0-alpha.18
[INFO] [stderr]     Checking pin-utils v0.1.0-alpha.4
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]    Compiling num-bigint v0.2.3
[INFO] [stderr]    Compiling num-iter v0.1.39
[INFO] [stderr]    Compiling num-rational v0.2.2
[INFO] [stderr]    Compiling num-complex v0.2.3
[INFO] [stderr]     Checking futures-sink-preview v0.3.0-alpha.18
[INFO] [stderr]     Checking futures-channel-preview v0.3.0-alpha.18
[INFO] [stderr]     Checking num v0.2.0
[INFO] [stderr]    Compiling proc-macro-hack v0.5.10
[INFO] [stderr]    Compiling futures-join-macro-preview v0.3.0-alpha.18
[INFO] [stderr]    Compiling futures-select-macro-preview v0.3.0-alpha.18
[INFO] [stderr]    Compiling async-coap-uri-macros v0.1.0
[INFO] [stderr]     Checking futures-util-preview v0.3.0-alpha.18
[INFO] [stderr]     Checking async-coap-uri v0.1.0
[INFO] [stderr]     Checking futures-executor-preview v0.3.0-alpha.18
[INFO] [stderr]     Checking futures-preview v0.3.0-alpha.18
[INFO] [stderr]     Checking futures-timer v0.3.0
[INFO] [stderr]     Checking async-coap v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: the feature `async_await` has been stable since 1.39.0 and no longer requires an attribute to enable
[INFO] [stderr]    --> src/lib.rs:317:12
[INFO] [stderr]     |
[INFO] [stderr] 317 | #![feature(async_await)]
[INFO] [stderr]     |            ^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(stable_features)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: the feature `async_await` has been stable since 1.39.0 and no longer requires an attribute to enable
[INFO] [stderr]    --> src/lib.rs:317:12
[INFO] [stderr]     |
[INFO] [stderr] 317 | #![feature(async_await)]
[INFO] [stderr]     |            ^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(stable_features)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 48.73s
[INFO] running `"docker" "inspect" "d984d99a4d82e9ed5b8abb2df2bce2911577489afb404addd9b1a88c55689c68"`
[INFO] running `"docker" "rm" "-f" "d984d99a4d82e9ed5b8abb2df2bce2911577489afb404addd9b1a88c55689c68"`
[INFO] [stdout] d984d99a4d82e9ed5b8abb2df2bce2911577489afb404addd9b1a88c55689c68