[INFO] fetching crate cotton 0.0.9...
[INFO] checking cotton-0.0.9 against master#893fadd11a52aa26fc19c67ee1b79f03d6a1bed3 for pr-77153
[INFO] extracting crate cotton 0.0.9 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate cotton 0.0.9 on toolchain 893fadd11a52aa26fc19c67ee1b79f03d6a1bed3
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+893fadd11a52aa26fc19c67ee1b79f03d6a1bed3" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate cotton 0.0.9
[INFO] finished tweaking crates.io crate cotton 0.0.9
[INFO] tweaked toml for crates.io crate cotton 0.0.9 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+893fadd11a52aa26fc19c67ee1b79f03d6a1bed3" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+893fadd11a52aa26fc19c67ee1b79f03d6a1bed3" "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-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+893fadd11a52aa26fc19c67ee1b79f03d6a1bed3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1e5df489c0ea58d8d36429ac2e0e8edb402138542ad74260e0e69ab91d851b03
[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" "1e5df489c0ea58d8d36429ac2e0e8edb402138542ad74260e0e69ab91d851b03", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1e5df489c0ea58d8d36429ac2e0e8edb402138542ad74260e0e69ab91d851b03", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1e5df489c0ea58d8d36429ac2e0e8edb402138542ad74260e0e69ab91d851b03", kill_on_drop: false }`
[INFO] [stdout] 1e5df489c0ea58d8d36429ac2e0e8edb402138542ad74260e0e69ab91d851b03
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+893fadd11a52aa26fc19c67ee1b79f03d6a1bed3" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b9ceb851c81ec267c5e2fee00e0c6545c367269442fa1e6415a4da62a9502506
[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" "b9ceb851c81ec267c5e2fee00e0c6545c367269442fa1e6415a4da62a9502506", kill_on_drop: false }`
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling getrandom v0.1.15
[INFO] [stderr]    Compiling syn v1.0.41
[INFO] [stderr]     Checking ppv-lite86 v0.2.9
[INFO] [stderr]     Checking gimli v0.22.0
[INFO] [stderr]     Checking unicode-width v0.1.8
[INFO] [stderr]     Checking adler v0.2.3
[INFO] [stderr]     Checking vec_map v0.8.2
[INFO] [stderr]     Checking object v0.20.0
[INFO] [stderr]     Checking rustc-demangle v0.1.16
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]     Checking tap v0.3.1
[INFO] [stderr]     Checking boolinator v2.4.0
[INFO] [stderr]     Checking assert_matches v1.3.0
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling miniz_oxide v0.4.2
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling num-integer v0.1.43
[INFO] [stderr]     Checking app_dirs v1.2.1
[INFO] [stderr]    Compiling proc-macro2 v1.0.21
[INFO] [stderr]     Checking log v0.4.11
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking os_pipe v0.9.2
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking shared_child v0.3.4
[INFO] [stderr]     Checking errno v0.2.6
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking itertools v0.8.2
[INFO] [stderr]     Checking duct v0.13.4
[INFO] [stderr]     Checking exec v0.3.1
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking chrono v0.4.15
[INFO] [stderr]     Checking shaman v0.1.0
[INFO] [stderr]     Checking addr2line v0.13.0
[INFO] [stderr]     Checking backtrace v0.3.50
[INFO] [stderr]     Checking problem v5.3.0
[INFO] [stderr]    Compiling structopt-derive v0.4.11
[INFO] [stderr]     Checking structopt v0.3.18
[INFO] [stderr]     Checking cotton v0.0.9 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 53.15s
[INFO] running `Command { std: "docker" "inspect" "b9ceb851c81ec267c5e2fee00e0c6545c367269442fa1e6415a4da62a9502506", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b9ceb851c81ec267c5e2fee00e0c6545c367269442fa1e6415a4da62a9502506", kill_on_drop: false }`
[INFO] [stdout] b9ceb851c81ec267c5e2fee00e0c6545c367269442fa1e6415a4da62a9502506