[INFO] fetching crate wamp 0.1.0...
[INFO] testing wamp-0.1.0 against 1.47.0 for beta-1.48-1
[INFO] extracting crate wamp 0.1.0 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate wamp 0.1.0 on toolchain 1.47.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate wamp 0.1.0
[INFO] removed path dependency rmp from crates.io crate wamp 0.1.0
[INFO] removed path dependency rmp-serde from crates.io crate wamp 0.1.0
[INFO] finished tweaking crates.io crate wamp 0.1.0
[INFO] tweaked toml for crates.io crate wamp 0.1.0 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f2e552eda7e81ffde20aec0540d8d022c17aff8ea5947005241de4fa963a9147
[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" "f2e552eda7e81ffde20aec0540d8d022c17aff8ea5947005241de4fa963a9147", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f2e552eda7e81ffde20aec0540d8d022c17aff8ea5947005241de4fa963a9147", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f2e552eda7e81ffde20aec0540d8d022c17aff8ea5947005241de4fa963a9147", kill_on_drop: false }`
[INFO] [stdout] f2e552eda7e81ffde20aec0540d8d022c17aff8ea5947005241de4fa963a9147
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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=warn" "-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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 51eb2c534088689fd42de24c6c565a1fbfdb464925e339554861d16f252d77e5
[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" "51eb2c534088689fd42de24c6c565a1fbfdb464925e339554861d16f252d77e5", kill_on_drop: false }`
[INFO] [stderr]    Compiling term v0.4.6
[INFO] [stderr]    Compiling unicode-xid v0.0.3
[INFO] [stderr]    Compiling bitflags v0.5.0
[INFO] [stderr]    Compiling bitflags v0.4.0
[INFO] [stderr]    Compiling serde v0.7.15
[INFO] [stderr]    Compiling byteorder v0.4.2
[INFO] [stderr]    Compiling bytes v0.3.0
[INFO] [stderr]    Compiling regex-syntax v0.3.9
[INFO] [stderr]    Compiling utf8-ranges v0.1.3
[INFO] [stderr]    Compiling slab v0.1.3
[INFO] [stderr]    Compiling sha1 v0.2.0
[INFO] [stderr]    Compiling itoa v0.1.1
[INFO] [stderr]    Compiling syntex_pos v0.39.0
[INFO] [stderr]    Compiling ws2_32-sys v0.2.1
[INFO] [stderr]    Compiling net2 v0.2.35
[INFO] [stderr]    Compiling memchr v0.1.11
[INFO] [stderr]    Compiling nix v0.5.1
[INFO] [stderr]    Compiling thread-id v2.0.0
[INFO] [stderr]    Compiling syncbox v0.2.4
[INFO] [stderr]    Compiling thread_local v0.2.7
[INFO] [stderr]    Compiling aho-corasick v0.5.3
[INFO] [stderr]    Compiling rmp v0.7.5
[INFO] [stderr]    Compiling miow v0.1.5
[INFO] [stderr]    Compiling syntex_errors v0.39.0
[INFO] [stderr]    Compiling eventual v0.1.7
[INFO] [stderr]    Compiling syntex_syntax v0.39.0
[INFO] [stderr]    Compiling regex v0.1.80
[INFO] [stderr]    Compiling mio v0.5.1
[INFO] [stderr]    Compiling serde_json v0.7.4
[INFO] [stderr]    Compiling rmp-serde v0.9.6
[INFO] [stderr]    Compiling ws v0.5.3
[INFO] [stderr]    Compiling env_logger v0.3.5
[INFO] [stdout] error[E0502]: cannot borrow `cx.parse_sess.span_diagnostic` as immutable because it is also borrowed as mutable
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/syntex_syntax-0.39.0/src/ext/expand.rs:659:25
[INFO] [stdout]     |
[INFO] [stdout] 649 |         let mut expander = MacroExpander::new(&mut cx);
[INFO] [stdout]     |                                               ------- mutable borrow occurs here
[INFO] [stdout] ...
[INFO] [stdout] 659 |         let err_count = cx.parse_sess.span_diagnostic.err_count();
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ immutable borrow occurs here
[INFO] [stdout] 660 |         let mut ret = expander.fold_crate(c);
[INFO] [stdout]     |                       -------- mutable borrow later used here
[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 `syntex_syntax`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "51eb2c534088689fd42de24c6c565a1fbfdb464925e339554861d16f252d77e5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "51eb2c534088689fd42de24c6c565a1fbfdb464925e339554861d16f252d77e5", kill_on_drop: false }`
[INFO] [stdout] 51eb2c534088689fd42de24c6c565a1fbfdb464925e339554861d16f252d77e5
