[INFO] fetching crate pkg-version 1.0.0...
[INFO] checking pkg-version-1.0.0 against master#a874956d940ecb3ed524b6176a171219ac4787ea for pr-76104
[INFO] extracting crate pkg-version 1.0.0 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate pkg-version 1.0.0 on toolchain a874956d940ecb3ed524b6176a171219ac4787ea
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a874956d940ecb3ed524b6176a171219ac4787ea" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate pkg-version 1.0.0
[INFO] finished tweaking crates.io crate pkg-version 1.0.0
[INFO] tweaked toml for crates.io crate pkg-version 1.0.0 written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a874956d940ecb3ed524b6176a171219ac4787ea" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a874956d940ecb3ed524b6176a171219ac4787ea" "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-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "+a874956d940ecb3ed524b6176a171219ac4787ea" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 16dd7a2ca318380c738d5277e821c372bba47872bf17ecfc751be751ebcff32c
[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" "16dd7a2ca318380c738d5277e821c372bba47872bf17ecfc751be751ebcff32c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "16dd7a2ca318380c738d5277e821c372bba47872bf17ecfc751be751ebcff32c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "16dd7a2ca318380c738d5277e821c372bba47872bf17ecfc751be751ebcff32c", kill_on_drop: false }`
[INFO] [stdout] 16dd7a2ca318380c738d5277e821c372bba47872bf17ecfc751be751ebcff32c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "+a874956d940ecb3ed524b6176a171219ac4787ea" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7b14d37beb0874eb86b7f9c4f9c6b35d1fdb91380ad1bb2d14195586fbd6a93a
[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" "7b14d37beb0874eb86b7f9c4f9c6b35d1fdb91380ad1bb2d14195586fbd6a93a", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]     Checking unicode-xid v0.1.0
[INFO] [stderr]    Compiling serde v1.0.116
[INFO] [stderr]    Compiling proc-macro-hack v0.5.18
[INFO] [stderr]     Checking proc-macro2 v0.4.30
[INFO] [stderr]     Checking aho-corasick v0.7.13
[INFO] [stderr]     Checking pulldown-cmark v0.4.1
[INFO] [stderr]     Checking quote v0.6.13
[INFO] [stderr]     Checking syn v0.15.44
[INFO] [stderr]    Compiling pkg-version-impl v0.1.1
[INFO] [stderr]     Checking regex v1.3.9
[INFO] [stderr]     Checking pkg-version v1.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking toml v0.5.6
[INFO] [stderr]     Checking version-sync v0.8.1
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 22.21s
[INFO] running `Command { std: "docker" "inspect" "7b14d37beb0874eb86b7f9c4f9c6b35d1fdb91380ad1bb2d14195586fbd6a93a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7b14d37beb0874eb86b7f9c4f9c6b35d1fdb91380ad1bb2d14195586fbd6a93a", kill_on_drop: false }`
[INFO] [stdout] 7b14d37beb0874eb86b7f9c4f9c6b35d1fdb91380ad1bb2d14195586fbd6a93a