[INFO] fetching crate resp-async 0.0.4...
[INFO] checking resp-async-0.0.4 against master#c97b539e408ea353f4fde2f9251d598291fec421 for pr-105102
[INFO] extracting crate resp-async 0.0.4 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate resp-async 0.0.4 on toolchain c97b539e408ea353f4fde2f9251d598291fec421
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c97b539e408ea353f4fde2f9251d598291fec421" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-7/source/rust-toolchain
[INFO] started tweaking crates.io crate resp-async 0.0.4
[INFO] finished tweaking crates.io crate resp-async 0.0.4
[INFO] tweaked toml for crates.io crate resp-async 0.0.4 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate crates.io crate resp-async 0.0.4 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c97b539e408ea353f4fde2f9251d598291fec421" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded log v0.4.3
[INFO] [stderr]   Downloaded crossbeam-utils v0.3.2
[INFO] [stderr]   Downloaded tokio-threadpool v0.1.5
[INFO] [stderr]   Downloaded nodrop v0.1.12
[INFO] [stderr]   Downloaded crossbeam-epoch v0.4.3
[INFO] [stderr]   Downloaded time v0.1.40
[INFO] [stderr]   Downloaded redox_syscall v0.1.40
[INFO] [stderr]   Downloaded arrayvec v0.4.7
[INFO] [stderr]   Downloaded byteorder v1.2.4
[INFO] [stderr]   Downloaded bitflags v1.0.3
[INFO] [stderr]   Downloaded tokio-codec v0.1.0
[INFO] [stderr]   Downloaded tokio-udp v0.1.1
[INFO] [stderr]   Downloaded lazycell v0.6.0
[INFO] [stderr]   Downloaded futures v0.1.23
[INFO] [stderr]   Downloaded tokio-fs v0.1.2
[INFO] [stderr]   Downloaded lazy_static v1.1.0
[INFO] [stderr]   Downloaded crossbeam-deque v0.3.1
[INFO] [stderr]   Downloaded term v0.5.1
[INFO] [stderr]   Downloaded tokio-io v0.1.7
[INFO] [stderr]   Downloaded tokio-tcp v0.1.0
[INFO] [stderr]   Downloaded num-traits v0.2.5
[INFO] [stderr]   Downloaded num_cpus v1.8.0
[INFO] [stderr]   Downloaded chrono v0.4.5
[INFO] [stderr]   Downloaded mio v0.6.15
[INFO] [stderr]   Downloaded winapi v0.3.5
[INFO] [stderr]   Downloaded tokio-executor v0.1.2
[INFO] [stderr]   Downloaded libc v0.2.42
[INFO] [stderr]   Downloaded tokio-reactor v0.1.2
[INFO] [stderr]   Downloaded tokio-timer v0.2.4
[INFO] [stderr]   Downloaded rand v0.4.2
[INFO] [stderr]   Downloaded simplelog v0.5.2
[INFO] [stderr]   Downloaded version_check v0.1.4
[INFO] [stderr]   Downloaded slab v0.4.1
[INFO] [stderr]   Downloaded tokio v0.1.7
[INFO] [stderr]   Downloaded bytes v0.4.9
[INFO] [stderr]   Downloaded cfg-if v0.1.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:bb5b0feb4f87116a4ea905b7ff5bf5b85913db05e9f0fbc1abdd3168928d9075" "/opt/rustwide/cargo-home/bin/cargo" "+c97b539e408ea353f4fde2f9251d598291fec421" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 28c6f755de465027f52bf145d01e1cbff475e8ae925bda8b5bb0565798d1917f
[INFO] running `Command { std: "docker" "start" "-a" "28c6f755de465027f52bf145d01e1cbff475e8ae925bda8b5bb0565798d1917f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "28c6f755de465027f52bf145d01e1cbff475e8ae925bda8b5bb0565798d1917f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "28c6f755de465027f52bf145d01e1cbff475e8ae925bda8b5bb0565798d1917f", kill_on_drop: false }`
[INFO] [stdout] 28c6f755de465027f52bf145d01e1cbff475e8ae925bda8b5bb0565798d1917f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:bb5b0feb4f87116a4ea905b7ff5bf5b85913db05e9f0fbc1abdd3168928d9075" "/opt/rustwide/cargo-home/bin/cargo" "+c97b539e408ea353f4fde2f9251d598291fec421" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5652336d1ef0f8b382f37ed33f3a18a456b7f038a5f5f18d5ede221b95079cf0
[INFO] running `Command { std: "docker" "start" "-a" "5652336d1ef0f8b382f37ed33f3a18a456b7f038a5f5f18d5ede221b95079cf0", kill_on_drop: false }`
[INFO] [stderr]     Checking libc v0.2.42
[INFO] [stderr]     Checking cfg-if v0.1.4
[INFO] [stderr]     Checking futures v0.1.23
[INFO] [stderr]     Checking byteorder v1.2.4
[INFO] [stderr]    Compiling version_check v0.1.4
[INFO] [stderr]     Checking nodrop v0.1.12
[INFO] [stderr]     Checking slab v0.4.1
[INFO] [stderr]     Checking memoffset v0.2.1
[INFO] [stderr]     Checking scopeguard v0.3.3
[INFO] [stderr]     Checking lazycell v0.6.0
[INFO] [stderr]    Compiling num-traits v0.2.5
[INFO] [stderr]    Compiling num-integer v0.1.39
[INFO] [stderr]     Checking log v0.4.3
[INFO] [stderr]     Checking crossbeam-utils v0.3.2
[INFO] [stderr]     Checking arrayvec v0.4.7
[INFO] [stderr]     Checking term v0.5.1
[INFO] [stderr]    Compiling lazy_static v1.1.0
[INFO] [stderr]     Checking iovec v0.1.2
[INFO] [stderr]     Checking net2 v0.2.33
[INFO] [stderr]     Checking rand v0.4.2
[INFO] [stderr]     Checking num_cpus v1.8.0
[INFO] [stderr]     Checking time v0.1.40
[INFO] [stderr]     Checking bytes v0.4.9
[INFO] [stderr]     Checking mio v0.6.15
[INFO] [stderr]     Checking crossbeam-epoch v0.4.3
[INFO] [stderr]     Checking crossbeam-deque v0.3.1
[INFO] [stderr]     Checking tokio-executor v0.1.2
[INFO] [stderr]     Checking tokio-io v0.1.7
[INFO] [stderr]     Checking tokio-threadpool v0.1.5
[INFO] [stderr]     Checking tokio-timer v0.2.4
[INFO] [stderr]     Checking chrono v0.4.5
[INFO] [stderr]     Checking tokio-reactor v0.1.2
[INFO] [stderr]     Checking tokio-codec v0.1.0
[INFO] [stderr]     Checking tokio-fs v0.1.2
[INFO] [stderr]     Checking tokio-udp v0.1.1
[INFO] [stderr]     Checking tokio-tcp v0.1.0
[INFO] [stderr]     Checking tokio v0.1.7
[INFO] [stderr]     Checking simplelog v0.5.2
[INFO] [stderr]     Checking resp-async v0.0.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]   --> src/io.rs:35:13
[INFO] [stdout]    |
[INFO] [stdout] 35 |             mem::replace(&mut self.decoder, decoder);
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]   --> src/io.rs:35:13
[INFO] [stdout]    |
[INFO] [stdout] 35 |             mem::replace(&mut self.decoder, decoder);
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.32s
[INFO] running `Command { std: "docker" "inspect" "5652336d1ef0f8b382f37ed33f3a18a456b7f038a5f5f18d5ede221b95079cf0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5652336d1ef0f8b382f37ed33f3a18a456b7f038a5f5f18d5ede221b95079cf0", kill_on_drop: false }`
[INFO] [stdout] 5652336d1ef0f8b382f37ed33f3a18a456b7f038a5f5f18d5ede221b95079cf0