[INFO] fetching crate proc-macro2-next 1.0.0-rc4...
[INFO] checking proc-macro2-next-1.0.0-rc4 against try#f47dd4da3ae8c32c9e65d307bfe640b143e674df for pr-77526
[INFO] extracting crate proc-macro2-next 1.0.0-rc4 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate proc-macro2-next 1.0.0-rc4 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 proc-macro2-next 1.0.0-rc4
[INFO] finished tweaking crates.io crate proc-macro2-next 1.0.0-rc4
[INFO] tweaked toml for crates.io crate proc-macro2-next 1.0.0-rc4 written to /workspace/builds/worker-12/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]  Downloading crates ...
[INFO] [stderr]   Downloaded proc-macro2-next v1.0.0-rc4
[INFO] [stderr]   Downloaded quote-next v1.0.0-rc3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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] 9f9a204fbe1a59cdf5762e6939f574ab45482bd1cbc0abf505087efd1bc9583c
[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" "9f9a204fbe1a59cdf5762e6939f574ab45482bd1cbc0abf505087efd1bc9583c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9f9a204fbe1a59cdf5762e6939f574ab45482bd1cbc0abf505087efd1bc9583c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9f9a204fbe1a59cdf5762e6939f574ab45482bd1cbc0abf505087efd1bc9583c", kill_on_drop: false }`
[INFO] [stdout] 9f9a204fbe1a59cdf5762e6939f574ab45482bd1cbc0abf505087efd1bc9583c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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] 7251010c75744f1e570184398b9977e02fb135e399566225d8fc0f562cb5273e
[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" "7251010c75744f1e570184398b9977e02fb135e399566225d8fc0f562cb5273e", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2-next v1.0.0-rc4
[INFO] [stderr]     Checking unicode-xid v0.2.1
[INFO] [stderr]    Compiling proc-macro2-next v1.0.0-rc4 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking quote-next v1.0.0-rc3
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.64s
[INFO] running `Command { std: "docker" "inspect" "7251010c75744f1e570184398b9977e02fb135e399566225d8fc0f562cb5273e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7251010c75744f1e570184398b9977e02fb135e399566225d8fc0f562cb5273e", kill_on_drop: false }`
[INFO] [stdout] 7251010c75744f1e570184398b9977e02fb135e399566225d8fc0f562cb5273e