[INFO] cloning repository https://github.com/dmichiels/RustFBP
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/dmichiels/RustFBP" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdmichiels%2FRustFBP", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdmichiels%2FRustFBP'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 88859ff8361765c5fd3d28b2a5771bdbf12fa035
[INFO] checking dmichiels/RustFBP against master#db1fb85cff63ad5fffe435e17128f99f9e1d970c for pr-89056
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdmichiels%2FRustFBP" "/workspace/builds/worker-70/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-70/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/dmichiels/RustFBP on toolchain db1fb85cff63ad5fffe435e17128f99f9e1d970c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/dmichiels/RustFBP
[INFO] finished tweaking git repo https://github.com/dmichiels/RustFBP
[INFO] tweaked toml for git repo https://github.com/dmichiels/RustFBP written to /workspace/builds/worker-70/source/Cargo.toml
[INFO] crate git repo https://github.com/dmichiels/RustFBP already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "fetch" "--manifest-path" "Cargo.toml", 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]  Downloading crates ...
[INFO] [stderr]   Downloaded capnpc v0.5.1
[INFO] [stderr]   Downloaded libloading v0.2.0
[INFO] [stderr]   Downloaded capnp v0.5.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-70/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-70/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 21eb0b0564babc5c6c3def6edee39ce6cd7bbfc3ca38bcea1596a1219c225297
[INFO] running `Command { std: "docker" "start" "-a" "21eb0b0564babc5c6c3def6edee39ce6cd7bbfc3ca38bcea1596a1219c225297", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "21eb0b0564babc5c6c3def6edee39ce6cd7bbfc3ca38bcea1596a1219c225297", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "21eb0b0564babc5c6c3def6edee39ce6cd7bbfc3ca38bcea1596a1219c225297", kill_on_drop: false }`
[INFO] [stdout] 21eb0b0564babc5c6c3def6edee39ce6cd7bbfc3ca38bcea1596a1219c225297
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-70/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-70/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 64e0018dc6b5f3a0b4a32d55c91ec9d8b50eb7788f45ba2ceacf2f9d257ba8bd
[INFO] running `Command { std: "docker" "start" "-a" "64e0018dc6b5f3a0b4a32d55c91ec9d8b50eb7788f45ba2ceacf2f9d257ba8bd", kill_on_drop: false }`
[INFO] [stderr]    Compiling winapi-build v0.1.1
[INFO] [stderr]     Checking byteorder v0.3.13
[INFO] [stderr]     Checking winapi v0.2.5
[INFO] [stderr]    Compiling libloading v0.2.0
[INFO] [stderr]     Checking lazy_static v0.1.15
[INFO] [stderr]     Checking capnp v0.5.2
[INFO] [stderr]    Compiling kernel32-sys v0.2.1
[INFO] [stdout] error[E0502]: cannot borrow `*reff` as immutable because it is also borrowed as mutable
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/capnp-0.5.2/src/private/layout.rs:630:47
[INFO] [stdout]     |
[INFO] [stdout] 630 |         let ptr = try!(follow_fars(&mut reff, (*reff).target(), &mut segment));
[INFO] [stdout]     |                        ----------- ---------  ^^^^^^^ immutable borrow occurs here
[INFO] [stdout]     |                        |           |
[INFO] [stdout]     |                        |           mutable borrow occurs here
[INFO] [stdout]     |                        mutable borrow later used by call
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0502`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `capnp` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "64e0018dc6b5f3a0b4a32d55c91ec9d8b50eb7788f45ba2ceacf2f9d257ba8bd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "64e0018dc6b5f3a0b4a32d55c91ec9d8b50eb7788f45ba2ceacf2f9d257ba8bd", kill_on_drop: false }`
[INFO] [stdout] 64e0018dc6b5f3a0b4a32d55c91ec9d8b50eb7788f45ba2ceacf2f9d257ba8bd