[INFO] fetching crate ptags 0.3.2...
[INFO] checking ptags-0.3.2 against master#31ee872db5aae4750e3da1ca4ed1523c4356947f for pr-78461
[INFO] extracting crate ptags 0.3.2 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate ptags 0.3.2 on toolchain 31ee872db5aae4750e3da1ca4ed1523c4356947f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+31ee872db5aae4750e3da1ca4ed1523c4356947f" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-8/source/.cargo/config
[INFO] started tweaking crates.io crate ptags 0.3.2
[INFO] finished tweaking crates.io crate ptags 0.3.2
[INFO] tweaked toml for crates.io crate ptags 0.3.2 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate crates.io crate ptags 0.3.2 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+31ee872db5aae4750e3da1ca4ed1523c4356947f" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded vec_map v0.8.0
[INFO] [stderr]   Downloaded quote v0.4.2
[INFO] [stderr]   Downloaded skeptic v0.13.4
[INFO] [stderr]   Downloaded unicode-width v0.1.4
[INFO] [stderr]   Downloaded nodrop v0.1.12
[INFO] [stderr]   Downloaded time v0.1.39
[INFO] [stderr]   Downloaded serde_json v1.0.34
[INFO] [stderr]   Downloaded bytecount v0.4.0
[INFO] [stderr]   Downloaded serde_derive v1.0.84
[INFO] [stderr]   Downloaded error-chain v0.12.0
[INFO] [stderr]   Downloaded atty v0.2.8
[INFO] [stderr]   Downloaded gcc v0.3.54
[INFO] [stderr]   Downloaded cfg-if v0.1.2
[INFO] [stderr]   Downloaded bytes v0.4.6
[INFO] [stderr]   Downloaded backtrace-sys v0.1.16
[INFO] [stderr]   Downloaded rustc-demangle v0.1.7
[INFO] [stderr]   Downloaded syn v0.15.24
[INFO] [stderr]   Downloaded bitflags v1.0.1
[INFO] [stderr]   Downloaded serde v1.0.84
[INFO] [stderr]   Downloaded byteorder v1.2.1
[INFO] [stderr]   Downloaded backtrace v0.3.5
[INFO] [stderr]   Downloaded libc v0.2.39
[INFO] [stderr]   Downloaded dirs v1.0.4
[INFO] [stderr]   Downloaded clap v2.31.1
[INFO] [stderr]   Downloaded toml v0.4.6
[INFO] [stderr]   Downloaded quote v0.6.8
[INFO] [stderr]   Downloaded rand v0.3.22
[INFO] [stderr]   Downloaded cargo_metadata v0.6.4
[INFO] [stderr]   Downloaded proc-macro2 v0.4.20
[INFO] [stderr]   Downloaded rand v0.4.2
[INFO] [stderr]   Downloaded winapi v0.3.4
[INFO] [stderr]   Downloaded arrayvec v0.4.7
[INFO] [stderr]   Downloaded structopt-derive v0.2.5
[INFO] [stderr]   Downloaded structopt-toml-derive v0.4.0
[INFO] [stderr]   Downloaded syn v0.12.14
[INFO] [stderr]   Downloaded redox_syscall v0.1.37
[INFO] [stderr]   Downloaded structopt v0.2.5
[INFO] [stderr]   Downloaded structopt-toml v0.4.0
[INFO] [stderr]   Downloaded cc v1.0.6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "+31ee872db5aae4750e3da1ca4ed1523c4356947f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a6b81bea5719faf8b718c20c4eb5b39945d1e3693a6ed5fa212b0e0d9518dbad
[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" "a6b81bea5719faf8b718c20c4eb5b39945d1e3693a6ed5fa212b0e0d9518dbad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a6b81bea5719faf8b718c20c4eb5b39945d1e3693a6ed5fa212b0e0d9518dbad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a6b81bea5719faf8b718c20c4eb5b39945d1e3693a6ed5fa212b0e0d9518dbad", kill_on_drop: false }`
[INFO] [stdout] a6b81bea5719faf8b718c20c4eb5b39945d1e3693a6ed5fa212b0e0d9518dbad
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "+31ee872db5aae4750e3da1ca4ed1523c4356947f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7345b29302287c9cab578aa072c27c117fcadd834038b5bb38ff31d4920a22e1
[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" "7345b29302287c9cab578aa072c27c117fcadd834038b5bb38ff31d4920a22e1", kill_on_drop: false }`
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]     Checking libc v0.2.39
[INFO] [stderr]    Compiling cc v1.0.6
[INFO] [stderr]    Compiling proc-macro2 v0.4.20
[INFO] [stderr]    Compiling serde v1.0.84
[INFO] [stderr]    Compiling ryu v0.2.7
[INFO] [stderr]    Compiling rustc-demangle v0.1.7
[INFO] [stderr]    Compiling cfg-if v0.1.2
[INFO] [stderr]    Compiling pulldown-cmark v0.2.0
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling itoa v0.4.3
[INFO] [stderr]    Compiling same-file v1.0.4
[INFO] [stderr]    Compiling bitflags v1.0.1
[INFO] [stderr]    Compiling remove_dir_all v0.5.1
[INFO] [stderr]    Compiling bytecount v0.4.0
[INFO] [stderr]     Checking unicode-width v0.1.4
[INFO] [stderr]    Compiling failure_derive v0.1.5
[INFO] [stderr]    Compiling glob v0.2.11
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking strsim v0.7.0
[INFO] [stderr]     Checking vec_map v0.8.0
[INFO] [stderr]    Compiling nix v0.10.0
[INFO] [stderr]     Checking byteorder v1.2.1
[INFO] [stderr]     Checking bencher v0.1.5
[INFO] [stderr]    Compiling walkdir v2.2.7
[INFO] [stderr]    Compiling proc-macro2 v0.2.3
[INFO] [stderr]     Checking textwrap v0.9.0
[INFO] [stderr]     Checking atty v0.2.8
[INFO] [stderr]     Checking iovec v0.1.2
[INFO] [stderr]     Checking rand v0.4.2
[INFO] [stderr]     Checking dirs v1.0.4
[INFO] [stderr]     Checking time v0.1.39
[INFO] [stderr]     Checking clap v2.31.1
[INFO] [stderr]     Checking bytes v0.4.6
[INFO] [stderr]    Compiling quote v0.4.2
[INFO] [stderr]    Compiling syn v0.12.14
[INFO] [stderr]    Compiling quote v0.6.8
[INFO] [stderr]    Compiling backtrace-sys v0.1.16
[INFO] [stderr]     Checking rand v0.3.22
[INFO] [stderr]    Compiling tempdir v0.3.7
[INFO] [stderr]    Compiling syn v0.15.24
[INFO] [stderr]     Checking tempfile v2.2.0
[INFO] [stderr]    Compiling structopt-derive v0.2.5
[INFO] [stderr]    Compiling structopt-toml-derive v0.4.0
[INFO] [stderr]     Checking toml v0.4.6
[INFO] [stderr]     Checking structopt v0.2.5
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling serde_json v1.0.34
[INFO] [stderr]    Compiling synstructure v0.10.1
[INFO] [stderr]    Compiling serde_derive v1.0.84
[INFO] [stderr]    Compiling backtrace v0.3.5
[INFO] [stderr]    Compiling error-chain v0.12.0
[INFO] [stderr]     Checking failure v0.1.5
[INFO] [stderr]    Compiling cargo_metadata v0.6.4
[INFO] [stderr]    Compiling skeptic v0.13.4
[INFO] [stderr]    Compiling structopt-toml v0.4.0
[INFO] [stderr]     Checking ptags v0.3.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 20s
[INFO] running `Command { std: "docker" "inspect" "7345b29302287c9cab578aa072c27c117fcadd834038b5bb38ff31d4920a22e1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7345b29302287c9cab578aa072c27c117fcadd834038b5bb38ff31d4920a22e1", kill_on_drop: false }`
[INFO] [stdout] 7345b29302287c9cab578aa072c27c117fcadd834038b5bb38ff31d4920a22e1