[INFO] fetching crate pier 0.1.5...
[INFO] checking pier-0.1.5 against master#a5f164faad4a2fed606b8160fd7ecd2d5cbba381 for pr-84920
[INFO] extracting crate pier 0.1.5 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate pier 0.1.5 on toolchain a5f164faad4a2fed606b8160fd7ecd2d5cbba381
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-7/source/rust-toolchain
[INFO] started tweaking crates.io crate pier 0.1.5
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate pier 0.1.5
[INFO] tweaked toml for crates.io crate pier 0.1.5 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate crates.io crate pier 0.1.5 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "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-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 348d8e5dab13fb67fd26babe6a7fc8c003f78b15b3b7fabb66b06e2ee1eada8b
[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" "348d8e5dab13fb67fd26babe6a7fc8c003f78b15b3b7fabb66b06e2ee1eada8b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "348d8e5dab13fb67fd26babe6a7fc8c003f78b15b3b7fabb66b06e2ee1eada8b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "348d8e5dab13fb67fd26babe6a7fc8c003f78b15b3b7fabb66b06e2ee1eada8b", kill_on_drop: false }`
[INFO] [stdout] 348d8e5dab13fb67fd26babe6a7fc8c003f78b15b3b7fabb66b06e2ee1eada8b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 624b62d9a370c2d5fb2c8561a51a609689117ed0020cbd496c9d1badd191cf73
[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" "624b62d9a370c2d5fb2c8561a51a609689117ed0020cbd496c9d1badd191cf73", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.65
[INFO] [stderr]     Checking cfg-if v0.1.7
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling proc-macro2 v0.4.27
[INFO] [stderr]     Checking lazy_static v1.3.0
[INFO] [stderr]    Compiling syn v0.15.29
[INFO] [stderr]    Compiling proc-macro2 v1.0.6
[INFO] [stderr]    Compiling regex v1.1.9
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling cc v1.0.37
[INFO] [stderr]     Checking ppv-lite86 v0.2.6
[INFO] [stderr]    Compiling syn v1.0.11
[INFO] [stderr]    Compiling byteorder v1.3.1
[INFO] [stderr]    Compiling unicode-segmentation v1.6.0
[INFO] [stderr]    Compiling ryu v1.0.2
[INFO] [stderr]    Compiling doc-comment v0.3.1
[INFO] [stderr]     Checking bitflags v1.0.4
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking fnv v1.0.6
[INFO] [stderr]     Checking predicates-core v1.0.0
[INFO] [stderr]     Checking rustc-demangle v0.1.14
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking difference v2.0.0
[INFO] [stderr]     Checking encode_unicode v0.3.5
[INFO] [stderr]    Compiling escargot v0.4.0
[INFO] [stderr]     Checking treeline v0.1.0
[INFO] [stderr]     Checking scrawl v1.1.0
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]    Compiling backtrace v0.3.16
[INFO] [stderr]    Compiling proc-macro2 v0.2.3
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]     Checking crossbeam-utils v0.6.6
[INFO] [stderr]     Checking c2-chacha v0.2.3
[INFO] [stderr]     Checking log v0.4.8
[INFO] [stderr]    Compiling heck v0.3.1
[INFO] [stderr]     Checking predicates-tree v1.0.0
[INFO] [stderr]     Checking crossbeam-channel v0.3.9
[INFO] [stderr]    Compiling quote v0.4.2
[INFO] [stderr]    Compiling backtrace-sys v0.1.28
[INFO] [stderr]    Compiling syn v0.12.15
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]    Compiling quote v0.6.11
[INFO] [stderr]     Checking memchr v2.2.0
[INFO] [stderr]     Checking getrandom v0.1.13
[INFO] [stderr]     Checking atty v0.2.11
[INFO] [stderr]     Checking dirs v1.0.5
[INFO] [stderr]     Checking dirs-sys v0.3.4
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking term v0.5.2
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking dirs v2.0.2
[INFO] [stderr]     Checking aho-corasick v0.7.6
[INFO] [stderr]     Checking bstr v0.2.8
[INFO] [stderr]     Checking csv-core v0.1.5
[INFO] [stderr]     Checking float-cmp v0.4.0
[INFO] [stderr]     Checking rand_chacha v0.2.1
[INFO] [stderr]     Checking rand v0.7.2
[INFO] [stderr]     Checking tempfile v3.1.0
[INFO] [stderr]    Compiling enum-kinds v0.4.1
[INFO] [stderr]     Checking globset v0.4.4
[INFO] [stderr]     Checking predicates v1.0.1
[INFO] [stderr]     Checking ignore v0.4.10
[INFO] [stderr]    Compiling proc-macro-error v0.2.6
[INFO] [stderr]     Checking globwalk v0.5.0
[INFO] [stderr]     Checking assert_fs v0.11.3
[INFO] [stderr]    Compiling structopt-derive v0.3.5
[INFO] [stderr]     Checking structopt v0.3.5
[INFO] [stderr]    Compiling serde_derive v1.0.89
[INFO] [stderr]    Compiling snafu-derive v0.5.0
[INFO] [stderr]     Checking snafu v0.5.0
[INFO] [stderr]     Checking serde v1.0.89
[INFO] [stderr]     Checking csv v1.0.7
[INFO] [stderr]     Checking toml v0.4.10
[INFO] [stderr]     Checking serde_json v1.0.41
[INFO] [stderr]     Checking prettytable-rs v0.8.0
[INFO] [stderr]     Checking pier v0.1.5 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking assert_cmd v0.11.1
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 32s
[INFO] running `Command { std: "docker" "inspect" "624b62d9a370c2d5fb2c8561a51a609689117ed0020cbd496c9d1badd191cf73", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "624b62d9a370c2d5fb2c8561a51a609689117ed0020cbd496c9d1badd191cf73", kill_on_drop: false }`
[INFO] [stdout] 624b62d9a370c2d5fb2c8561a51a609689117ed0020cbd496c9d1badd191cf73