[INFO] fetching crate thruster-middleware 0.9.0-alpha.2...
[INFO] checking thruster-middleware-0.9.0-alpha.2 against try#f47dd4da3ae8c32c9e65d307bfe640b143e674df for pr-77526
[INFO] extracting crate thruster-middleware 0.9.0-alpha.2 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate thruster-middleware 0.9.0-alpha.2 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 thruster-middleware 0.9.0-alpha.2
[INFO] finished tweaking crates.io crate thruster-middleware 0.9.0-alpha.2
[INFO] tweaked toml for crates.io crate thruster-middleware 0.9.0-alpha.2 written to /workspace/builds/worker-4/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-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] 214a0b71b9fea445b81683f2887439876055f607f5f6373ca7a071c043b62f42
[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" "214a0b71b9fea445b81683f2887439876055f607f5f6373ca7a071c043b62f42", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "214a0b71b9fea445b81683f2887439876055f607f5f6373ca7a071c043b62f42", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "214a0b71b9fea445b81683f2887439876055f607f5f6373ca7a071c043b62f42", kill_on_drop: false }`
[INFO] [stdout] 214a0b71b9fea445b81683f2887439876055f607f5f6373ca7a071c043b62f42
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] [stdout] 27ab00ce1eacd49dcbbfc83b1cae407104a94d89d56beeb5e4a710e4fd5475f7
[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" "27ab00ce1eacd49dcbbfc83b1cae407104a94d89d56beeb5e4a710e4fd5475f7", kill_on_drop: false }`
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]    Compiling syn v1.0.42
[INFO] [stderr]     Checking slab v0.4.2
[INFO] [stderr]    Compiling serde_json v1.0.58
[INFO] [stderr]    Compiling serde_derive v1.0.116
[INFO] [stderr]     Checking bytes v0.5.6
[INFO] [stderr]     Checking futures-sink v0.3.6
[INFO] [stderr]     Checking regex-syntax v0.6.18
[INFO] [stderr]     Checking fnv v1.0.7
[INFO] [stderr]     Checking thruster-core-async-await v0.9.0-alpha.2
[INFO] [stderr]     Checking memchr v2.3.3
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking net2 v0.2.35
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]     Checking aho-corasick v0.7.13
[INFO] [stderr]     Checking smallvec v0.6.13
[INFO] [stderr]     Checking mio v0.6.22
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]     Checking bytes v0.4.12
[INFO] [stderr]     Checking tokio v0.2.22
[INFO] [stderr]     Checking templatify v0.2.3
[INFO] [stderr]     Checking http v0.1.21
[INFO] [stderr]     Checking tokio-util v0.2.0
[INFO] [stderr]     Checking regex v1.3.9
[INFO] [stderr]     Checking thruster-core v0.9.0-alpha.2
[INFO] [stderr]     Checking thruster-middleware v0.9.0-alpha.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 47.36s
[INFO] running `Command { std: "docker" "inspect" "27ab00ce1eacd49dcbbfc83b1cae407104a94d89d56beeb5e4a710e4fd5475f7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "27ab00ce1eacd49dcbbfc83b1cae407104a94d89d56beeb5e4a710e4fd5475f7", kill_on_drop: false }`
[INFO] [stdout] 27ab00ce1eacd49dcbbfc83b1cae407104a94d89d56beeb5e4a710e4fd5475f7