[INFO] fetching crate ra_vfs 0.6.1...
[INFO] checking ra_vfs-0.6.1 against try#6f8a6450478f69b8510c8976ab6c2a70b3b0e47c for pr-84920
[INFO] extracting crate ra_vfs 0.6.1 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate ra_vfs 0.6.1 on toolchain 6f8a6450478f69b8510c8976ab6c2a70b3b0e47c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate ra_vfs 0.6.1
[INFO] finished tweaking crates.io crate ra_vfs 0.6.1
[INFO] tweaked toml for crates.io crate ra_vfs 0.6.1 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded jod-thread v0.1.2
[INFO] [stderr]   Downloaded relative-path v1.4.0
[INFO] [stderr]   Downloaded flexi_logger v0.15.12
[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" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 954fd935c756ce9e2077cd465beff23d41c03f0efc2c74fad2a2d77c23d46fc2
[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" "954fd935c756ce9e2077cd465beff23d41c03f0efc2c74fad2a2d77c23d46fc2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "954fd935c756ce9e2077cd465beff23d41c03f0efc2c74fad2a2d77c23d46fc2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "954fd935c756ce9e2077cd465beff23d41c03f0efc2c74fad2a2d77c23d46fc2", kill_on_drop: false }`
[INFO] [stdout] 954fd935c756ce9e2077cd465beff23d41c03f0efc2c74fad2a2d77c23d46fc2
[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" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 045f33ec17c6697b298f6aa02a5aca5e4642d64e8fc5d560f50c761e330061a3
[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" "045f33ec17c6697b298f6aa02a5aca5e4642d64e8fc5d560f50c761e330061a3", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]     Checking same-file v1.0.6
[INFO] [stderr]     Checking smallvec v1.6.1
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]     Checking jod-thread v0.1.2
[INFO] [stderr]     Checking relative-path v1.4.0
[INFO] [stderr]     Checking glob v0.3.0
[INFO] [stderr]     Checking yansi v0.5.0
[INFO] [stderr]     Checking remove_dir_all v0.5.3
[INFO] [stderr]     Checking rustc-hash v1.1.0
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]     Checking lock_api v0.3.4
[INFO] [stderr]     Checking net2 v0.2.37
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking inotify-sys v0.1.5
[INFO] [stderr]     Checking time v0.1.43
[INFO] [stderr]     Checking filetime v0.2.14
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]     Checking walkdir v2.3.2
[INFO] [stderr]    Compiling thiserror-impl v1.0.24
[INFO] [stderr]     Checking inotify v0.7.1
[INFO] [stderr]     Checking tempfile v3.2.0
[INFO] [stderr]     Checking parking_lot_core v0.7.2
[INFO] [stderr]     Checking parking_lot v0.10.2
[INFO] [stderr]     Checking mio v0.6.23
[INFO] [stderr]     Checking crossbeam-channel v0.4.4
[INFO] [stderr]     Checking mio-extras v2.0.6
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking notify v4.0.16
[INFO] [stderr]     Checking ra_vfs v0.6.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking thiserror v1.0.24
[INFO] [stderr]     Checking regex v1.5.4
[INFO] [stderr]     Checking flexi_logger v0.15.12
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 26.54s
[INFO] running `Command { std: "docker" "inspect" "045f33ec17c6697b298f6aa02a5aca5e4642d64e8fc5d560f50c761e330061a3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "045f33ec17c6697b298f6aa02a5aca5e4642d64e8fc5d560f50c761e330061a3", kill_on_drop: false }`
[INFO] [stdout] 045f33ec17c6697b298f6aa02a5aca5e4642d64e8fc5d560f50c761e330061a3