[INFO] fetching crate btrfsutil 0.1.0...
[INFO] checking btrfsutil-0.1.0 against master#a836d9b6413d9d593be6c09463ff8c4c70e56599 for pr-84037
[INFO] extracting crate btrfsutil 0.1.0 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate btrfsutil 0.1.0 on toolchain a836d9b6413d9d593be6c09463ff8c4c70e56599
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a836d9b6413d9d593be6c09463ff8c4c70e56599" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate btrfsutil 0.1.0
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate btrfsutil 0.1.0
[INFO] tweaked toml for crates.io crate btrfsutil 0.1.0 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate crates.io crate btrfsutil 0.1.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a836d9b6413d9d593be6c09463ff8c4c70e56599" "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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+a836d9b6413d9d593be6c09463ff8c4c70e56599" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3eea6c2cd27b8d7b918c4929ff84de6b1d8f259065bfbf9931ef76eff98e69ae
[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" "3eea6c2cd27b8d7b918c4929ff84de6b1d8f259065bfbf9931ef76eff98e69ae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3eea6c2cd27b8d7b918c4929ff84de6b1d8f259065bfbf9931ef76eff98e69ae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3eea6c2cd27b8d7b918c4929ff84de6b1d8f259065bfbf9931ef76eff98e69ae", kill_on_drop: false }`
[INFO] [stdout] 3eea6c2cd27b8d7b918c4929ff84de6b1d8f259065bfbf9931ef76eff98e69ae
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+a836d9b6413d9d593be6c09463ff8c4c70e56599" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7e6d0eabd64a6d4805371c22d9151c32247c90b2a58f299913b8f45706d986ca
[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" "7e6d0eabd64a6d4805371c22d9151c32247c90b2a58f299913b8f45706d986ca", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.10
[INFO] [stderr]    Compiling syn v1.0.18
[INFO] [stderr]    Compiling cc v1.0.52
[INFO] [stderr]    Compiling unicode-width v0.1.7
[INFO] [stderr]    Compiling termcolor v1.1.0
[INFO] [stderr]    Compiling vec_map v0.8.1
[INFO] [stderr]    Compiling bindgen v0.53.2
[INFO] [stderr]    Compiling lazycell v1.2.1
[INFO] [stderr]     Checking uuid v0.8.1
[INFO] [stderr]    Compiling nom v5.1.1
[INFO] [stderr]    Compiling thread_local v1.0.1
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling which v3.1.1
[INFO] [stderr]     Checking time v0.1.43
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling regex v1.3.7
[INFO] [stderr]    Compiling clap v2.33.0
[INFO] [stderr]     Checking chrono v0.4.11
[INFO] [stderr]    Compiling quote v1.0.3
[INFO] [stderr]    Compiling libloading v0.5.2
[INFO] [stderr]    Compiling env_logger v0.7.1
[INFO] [stderr]    Compiling clang-sys v0.29.3
[INFO] [stderr]    Compiling cexpr v0.4.0
[INFO] [stderr]    Compiling serde_derive v1.0.106
[INFO] [stderr]    Compiling thiserror-impl v1.0.16
[INFO] [stderr]     Checking thiserror v1.0.16
[INFO] [stderr]    Compiling serde v1.0.106
[INFO] [stderr]    Compiling toml v0.5.6
[INFO] [stderr]    Compiling btrfsutil v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 15s
[INFO] running `Command { std: "docker" "inspect" "7e6d0eabd64a6d4805371c22d9151c32247c90b2a58f299913b8f45706d986ca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7e6d0eabd64a6d4805371c22d9151c32247c90b2a58f299913b8f45706d986ca", kill_on_drop: false }`
[INFO] [stdout] 7e6d0eabd64a6d4805371c22d9151c32247c90b2a58f299913b8f45706d986ca