[INFO] cloning repository https://github.com/Hex-Zero/NNetR
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Hex-Zero/NNetR" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FHex-Zero%2FNNetR", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FHex-Zero%2FNNetR'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f8966aba30a52e390e59fee5978cd7fd3f620329
[INFO] checking Hex-Zero/NNetR against beta for pr-78714
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FHex-Zero%2FNNetR" "/workspace/builds/worker-12/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Hex-Zero/NNetR on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Hex-Zero/NNetR
[INFO] finished tweaking git repo https://github.com/Hex-Zero/NNetR
[INFO] tweaked toml for git repo https://github.com/Hex-Zero/NNetR written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/Hex-Zero/NNetR already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "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-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 1696a6c78f36fd5b8930881bc7e5d7b83a4bb3716a14bc1903aaa0816fff20a4
[INFO] running `Command { std: "docker" "start" "-a" "1696a6c78f36fd5b8930881bc7e5d7b83a4bb3716a14bc1903aaa0816fff20a4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1696a6c78f36fd5b8930881bc7e5d7b83a4bb3716a14bc1903aaa0816fff20a4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1696a6c78f36fd5b8930881bc7e5d7b83a4bb3716a14bc1903aaa0816fff20a4", kill_on_drop: false }`
[INFO] [stdout] 1696a6c78f36fd5b8930881bc7e5d7b83a4bb3716a14bc1903aaa0816fff20a4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c4009c934a0713cb6122ba809b579a530466d54109c53e5c79aeb71d240d639a
[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" "c4009c934a0713cb6122ba809b579a530466d54109c53e5c79aeb71d240d639a", kill_on_drop: false }`
[INFO] [stderr]    Compiling byteorder v0.4.2
[INFO] [stderr]     Checking linear-map v0.0.4
[INFO] [stderr]    Compiling rblas v0.0.11
[INFO] [stderr]     Checking capnp v0.6.2
[INFO] [stderr]     Checking timeit v0.1.2
[INFO] [stderr]     Checking num-complex v0.1.43
[INFO] [stderr]     Checking num-bigint v0.1.44
[INFO] [stderr]     Checking num-iter v0.1.41
[INFO] [stderr]     Checking enum_primitive v0.1.1
[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-0.6.2/src/private/layout.rs:639:47
[INFO] [stdout]     |
[INFO] [stdout] 639 |         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`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[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-0.6.2/src/private/layout.rs:639:47
[INFO] [stdout]     |
[INFO] [stdout] 639 |         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: build failed
[INFO] running `Command { std: "docker" "inspect" "c4009c934a0713cb6122ba809b579a530466d54109c53e5c79aeb71d240d639a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c4009c934a0713cb6122ba809b579a530466d54109c53e5c79aeb71d240d639a", kill_on_drop: false }`
[INFO] [stdout] c4009c934a0713cb6122ba809b579a530466d54109c53e5c79aeb71d240d639a