[INFO] fetching crate cafs 0.0.1...
[INFO] checking cafs-0.0.1 against try#4a23c45c7893f1416456144e3883cc48ea91722e for pr-82322
[INFO] extracting crate cafs 0.0.1 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate cafs 0.0.1 on toolchain 4a23c45c7893f1416456144e3883cc48ea91722e
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4a23c45c7893f1416456144e3883cc48ea91722e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate cafs 0.0.1
[INFO] finished tweaking crates.io crate cafs 0.0.1
[INFO] tweaked toml for crates.io crate cafs 0.0.1 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4a23c45c7893f1416456144e3883cc48ea91722e" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4a23c45c7893f1416456144e3883cc48ea91722e" "fetch" "--locked" "--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 leveldb v0.8.6
[INFO] [stderr]   Downloaded bitflags v0.1.1
[INFO] [stderr]   Downloaded rust-sqlite v0.2.0
[INFO] [stderr]   Downloaded db-key v0.0.5
[INFO] [stderr]   Downloaded leveldb-sys v2.0.8
[INFO] [stderr]   Downloaded toml-config v0.1.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+4a23c45c7893f1416456144e3883cc48ea91722e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 25273acb511e88687a8766fc1869eda9e17a72b5c5d719f646c85eb11f44920b
[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" "25273acb511e88687a8766fc1869eda9e17a72b5c5d719f646c85eb11f44920b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "25273acb511e88687a8766fc1869eda9e17a72b5c5d719f646c85eb11f44920b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "25273acb511e88687a8766fc1869eda9e17a72b5c5d719f646c85eb11f44920b", kill_on_drop: false }`
[INFO] [stdout] 25273acb511e88687a8766fc1869eda9e17a72b5c5d719f646c85eb11f44920b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+4a23c45c7893f1416456144e3883cc48ea91722e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 052f0ff11742051116cd84a71beef4a6557f49b57f680a7c56efd9fa609d7468
[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" "052f0ff11742051116cd84a71beef4a6557f49b57f680a7c56efd9fa609d7468", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.87
[INFO] [stderr]    Compiling cc v1.0.67
[INFO] [stderr]    Compiling pkg-config v0.3.19
[INFO] [stderr]    Compiling gcc v0.3.55
[INFO] [stderr]    Compiling proc-macro-hack v0.5.19
[INFO] [stderr]    Compiling const_fn v0.4.5
[INFO] [stderr]    Compiling serde_derive v1.0.123
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking once_cell v1.7.2
[INFO] [stderr]     Checking db-key v0.0.5
[INFO] [stderr]     Checking bitflags v0.1.1
[INFO] [stderr]     Checking matches v0.1.8
[INFO] [stderr]     Checking strsim v0.9.3
[INFO] [stderr]    Compiling standback v0.2.15
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling time v0.2.25
[INFO] [stderr]     Checking toml v0.1.30
[INFO] [stderr]     Checking capnp v0.6.2
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking thread_local v1.1.3
[INFO] [stderr]     Checking regex v1.4.3
[INFO] [stderr]    Compiling syn v1.0.60
[INFO] [stderr]     Checking toml-config 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] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "052f0ff11742051116cd84a71beef4a6557f49b57f680a7c56efd9fa609d7468", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "052f0ff11742051116cd84a71beef4a6557f49b57f680a7c56efd9fa609d7468", kill_on_drop: false }`
[INFO] [stdout] 052f0ff11742051116cd84a71beef4a6557f49b57f680a7c56efd9fa609d7468