[INFO] fetching crate git-appraise 0.2.0...
[INFO] checking git-appraise-0.2.0 against master#45d050cde277b22a755847338f2acc2c7b834141 for pr-71393
[INFO] extracting crate git-appraise 0.2.0 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate git-appraise 0.2.0 on toolchain 45d050cde277b22a755847338f2acc2c7b834141
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate git-appraise 0.2.0
[INFO] finished tweaking crates.io crate git-appraise 0.2.0
[INFO] tweaked toml for crates.io crate git-appraise 0.2.0 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] d11b3ff9771fdc5c5665ee1819d27f5ad0f60baeacbc055769ac39c62d45b79e
[INFO] running `"docker" "start" "-a" "d11b3ff9771fdc5c5665ee1819d27f5ad0f60baeacbc055769ac39c62d45b79e"`
[INFO] [stderr]    Compiling bitflags v0.5.0
[INFO] [stderr]     Checking itoa v0.1.1
[INFO] [stderr]     Checking serde v0.7.15
[INFO] [stderr]    Compiling libc v0.2.69
[INFO] [stderr]    Compiling syntex_pos v0.39.0
[INFO] [stderr]    Compiling libssh2-sys v0.1.41
[INFO] [stderr]    Compiling libgit2-sys v0.4.6
[INFO] [stderr]     Checking num-traits v0.1.43
[INFO] [stderr]    Compiling log v0.3.9
[INFO] [stderr]    Compiling syntex_errors v0.39.0
[INFO] [stderr]    Compiling syntex_syntax v0.32.0
[INFO] [stderr]    Compiling syntex_syntax v0.39.0
[INFO] [stderr]     Checking serde_json v0.7.4
[INFO] [stderr] error: failed to run custom build command for `libssh2-sys v0.1.41`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/build/libssh2-sys-d6800320c5f7ad06/build-script-build` (exit code: 101)
[INFO] [stderr] --- stdout
[INFO] [stderr] running: "cmake" "/opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/libssh2-sys-0.1.41/libssh2" "-DCRYPTO_BACKEND=OpenSSL" "-DOPENSSL_INCLUDE_DIR=/usr/include" "-DBUILD_SHARED_LIBS=OFF" "-DENABLE_ZLIB_COMPRESSION=ON" "-DCMAKE_INSTALL_LIBDIR=lib" "-DBUILD_EXAMPLES=OFF" "-DBUILD_TESTING=OFF" "-DCMAKE_INSTALL_PREFIX=/opt/rustwide/target/debug/build/libssh2-sys-f0b6ffc0f7dbf032/out" "-DCMAKE_C_FLAGS= -ffunction-sections -fdata-sections -fPIC -m64" "-DCMAKE_C_COMPILER=/usr/bin/cc" "-DCMAKE_CXX_FLAGS= -ffunction-sections -fdata-sections -fPIC -m64" "-DCMAKE_CXX_COMPILER=/usr/bin/c++" "-DCMAKE_BUILD_TYPE=Debug"
[INFO] [stderr] -- The C compiler identification is GNU 7.5.0
[INFO] [stderr] -- Check for working C compiler: /usr/bin/cc
[INFO] [stderr] -- Check for working C compiler: /usr/bin/cc -- works
[INFO] [stderr] -- Detecting C compiler ABI info
[INFO] [stderr] -- Detecting C compiler ABI info - done
[INFO] [stderr] -- Detecting C compile features
[INFO] [stderr] -- Detecting C compile features - done
[INFO] [stderr] -- Found OpenSSL: /usr/lib/x86_64-linux-gnu/libcrypto.so (found version "1.1.1") 
[INFO] [stderr] -- Looking for EVP_aes_128_ctr
[INFO] [stderr] -- Looking for EVP_aes_128_ctr - found
[INFO] [stderr] -- Found ZLIB: /usr/lib/x86_64-linux-gnu/libz.so (found version "1.2.11") 
[INFO] [stderr] -- Looking for include file unistd.h
[INFO] [stderr] -- Looking for include file unistd.h - found
[INFO] [stderr] -- Looking for include file inttypes.h
[INFO] [stderr] -- Looking for include file inttypes.h - found
[INFO] [stderr] -- Looking for include file stdlib.h
[INFO] [stderr] -- Looking for include file stdlib.h - found
[INFO] [stderr] -- Looking for include file sys/select.h
[INFO] [stderr] -- Looking for include file sys/select.h - found
[INFO] [stderr] -- Looking for include file sys/uio.h
[INFO] [stderr] -- Looking for include file sys/uio.h - found
[INFO] [stderr] -- Looking for include file sys/socket.h
[INFO] [stderr] -- Looking for include file sys/socket.h - found
[INFO] [stderr] -- Looking for include file sys/ioctl.h
[INFO] [stderr] -- Looking for include file sys/ioctl.h - found
[INFO] [stderr] -- Looking for include file sys/time.h
[INFO] [stderr] -- Looking for include file sys/time.h - found
[INFO] [stderr] -- Looking for include file sys/un.h
[INFO] [stderr] -- Looking for include file sys/un.h - found
[INFO] [stderr] -- Looking for include file windows.h
[INFO] [stderr] -- Looking for include file windows.h - not found
[INFO] [stderr] -- Looking for include file ws2tcpip.h
[INFO] [stderr] -- Looking for include file ws2tcpip.h - not found
[INFO] [stderr] -- Looking for include file winsock2.h
[INFO] [stderr] -- Looking for include file winsock2.h - not found
[INFO] [stderr] -- Looking for sys/types.h
[INFO] [stderr] -- Looking for sys/types.h - found
[INFO] [stderr] -- Looking for stdint.h
[INFO] [stderr] -- Looking for stdint.h - found
[INFO] [stderr] -- Looking for stddef.h
[INFO] [stderr] -- Looking for stddef.h - found
[INFO] [stderr] -- Check size of long long
[INFO] [stderr] -- Check size of long long - done
[INFO] [stderr] -- Looking for gettimeofday
[INFO] [stderr] -- Looking for gettimeofday - found
[INFO] [stderr] -- Looking for strtoll
[INFO] [stderr] -- Looking for strtoll - found
[INFO] [stderr] -- Looking for snprintf
[INFO] [stderr] -- Looking for snprintf - found
[INFO] [stderr] -- Looking for poll
[INFO] [stderr] -- Looking for poll - found
[INFO] [stderr] -- Looking for socket
[INFO] [stderr] -- Looking for socket - found
[INFO] [stderr] -- Looking for select
[INFO] [stderr] -- Looking for select - found
[INFO] [stderr] -- Looking for inet_addr
[INFO] [stderr] -- Looking for inet_addr - found
[INFO] [stderr] -- Performing Test HAVE_O_NONBLOCK
[INFO] [stderr] -- Performing Test HAVE_O_NONBLOCK - Success
[INFO] [stderr] -- The following features have been enabled:
[INFO] [stderr] 
[INFO] [stderr]  * Compression, using zlib for compression
[INFO] [stderr]  * diffie-hellman-group-exchange-sha1, "new" diffie-hellman-group-exchange-sha1 method
[INFO] [stderr]  * Logging, Logging of execution with debug trace
[INFO] [stderr] 
[INFO] [stderr] -- The following REQUIRED packages have been found:
[INFO] [stderr] 
[INFO] [stderr]  * OpenSSL
[INFO] [stderr]  * ZLIB
[INFO] [stderr] 
[INFO] [stderr] -- The following features have been disabled:
[INFO] [stderr] 
[INFO] [stderr]  * Shared library, creating libssh2 as a shared library (.so/.dll)
[INFO] [stderr]  * "none" cipher
[INFO] [stderr]  * "none" MAC
[INFO] [stderr] 
[INFO] [stderr] -- Configuring done
[INFO] [stderr] -- Generating done
[INFO] [stderr] -- Build files have been written to: /opt/rustwide/target/debug/build/libssh2-sys-f0b6ffc0f7dbf032/out/build
[INFO] [stderr] running: "cmake" "--build" "." "--target" "install" "--config" "Debug" "--"
[INFO] [stderr] Scanning dependencies of target libssh2
[INFO] [stderr] [  4%] Building C object src/CMakeFiles/libssh2.dir/agent.c.o
[INFO] [stderr] [  9%] Building C object src/CMakeFiles/libssh2.dir/keepalive.c.o
[INFO] [stderr] [ 13%] Building C object src/CMakeFiles/libssh2.dir/pem.c.o
[INFO] [stderr] [ 18%] Building C object src/CMakeFiles/libssh2.dir/comp.c.o
[INFO] [stderr] [ 22%] Building C object src/CMakeFiles/libssh2.dir/openssl.c.o
[INFO] [stderr] [ 27%] Building C object src/CMakeFiles/libssh2.dir/hostkey.c.o
[INFO] [stderr] [ 31%] Building C object src/CMakeFiles/libssh2.dir/knownhost.c.o
[INFO] [stderr] [ 36%] Building C object src/CMakeFiles/libssh2.dir/kex.c.o
[INFO] [stderr] [ 40%] Building C object src/CMakeFiles/libssh2.dir/mac.c.o
[INFO] [stderr] [ 45%] Building C object src/CMakeFiles/libssh2.dir/channel.c.o
[INFO] [stderr] [ 50%] Building C object src/CMakeFiles/libssh2.dir/global.c.o
[INFO] [stderr] [ 54%] Building C object src/CMakeFiles/libssh2.dir/misc.c.o
[INFO] [stderr] [ 59%] Building C object src/CMakeFiles/libssh2.dir/packet.c.o
[INFO] [stderr] [ 63%] Building C object src/CMakeFiles/libssh2.dir/crypt.c.o
[INFO] [stderr] [ 68%] Building C object src/CMakeFiles/libssh2.dir/scp.c.o
[INFO] [stderr] [ 72%] Building C object src/CMakeFiles/libssh2.dir/publickey.c.o
[INFO] [stderr] src/CMakeFiles/libssh2.dir/build.make:62: recipe for target 'src/CMakeFiles/libssh2.dir/openssl.c.o' failed
[INFO] [stderr] CMakeFiles/Makefile2:85: recipe for target 'src/CMakeFiles/libssh2.dir/all' failed
[INFO] [stderr] Makefile:151: recipe for target 'all' failed
[INFO] [stderr] 
[INFO] [stderr] --- stderr
[INFO] [stderr] fatal: not a git repository (or any parent up to mount point /opt/rustwide)
[INFO] [stderr] Stopping at filesystem boundary (GIT_DISCOVERY_ACROSS_FILESYSTEM not set).
[INFO] [stderr] CMake Warning:
[INFO] [stderr]   Manually-specified variables were not used by the project:
[INFO] [stderr] 
[INFO] [stderr]     CMAKE_CXX_COMPILER
[INFO] [stderr] 
[INFO] [stderr] 
[INFO] [stderr] /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/libssh2-sys-0.1.41/libssh2/src/openssl.c: In function '_libssh2_rsa_new':
[INFO] [stderr] /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/libssh2-sys-0.1.41/libssh2/src/openssl.c:71:11: error: dereferencing pointer to incomplete type 'RSA {aka struct rsa_st}'
[INFO] [stderr]      (*rsa)->e = BN_new();
[INFO] [stderr]            ^~
[INFO] [stderr] /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/libssh2-sys-0.1.41/libssh2/src/openssl.c: In function '_libssh2_dsa_new':
[INFO] [stderr] /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/libssh2-sys-0.1.41/libssh2/src/openssl.c:130:14: error: dereferencing pointer to incomplete type 'DSA {aka struct dsa_st}'
[INFO] [stderr]      (*dsactx)->p = BN_new();
[INFO] [stderr]               ^~
[INFO] [stderr] /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/libssh2-sys-0.1.41/libssh2/src/openssl.c: In function '_libssh2_dsa_sha1_verify':
[INFO] [stderr] /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/libssh2-sys-0.1.41/libssh2/src/openssl.c:156:13: error: storage size of 'dsasig' isn't known
[INFO] [stderr]      DSA_SIG dsasig;
[INFO] [stderr]              ^~~~~~
[INFO] [stderr] /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/libssh2-sys-0.1.41/libssh2/src/openssl.c:156:13: warning: unused variable 'dsasig' [-Wunused-variable]
[INFO] [stderr] In file included from /usr/include/openssl/asn1.h:23:0,
[INFO] [stderr]                  from /usr/include/openssl/rsa.h:16,
[INFO] [stderr]                  from /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/libssh2-sys-0.1.41/libssh2/src/openssl.h:42,
[INFO] [stderr]                  from /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/libssh2-sys-0.1.41/libssh2/src/crypto.h:42,
[INFO] [stderr]                  from /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/libssh2-sys-0.1.41/libssh2/src/libssh2_priv.h:140,
[INFO] [stderr]                  from /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/libssh2-sys-0.1.41/libssh2/src/openssl.c:41:
[INFO] [stderr] /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/libssh2-sys-0.1.41/libssh2/src/openssl.c: In function '_libssh2_dsa_sha1_sign':
[INFO] [stderr] /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/libssh2-sys-0.1.41/libssh2/src/openssl.c:597:29: error: dereferencing pointer to incomplete type 'DSA_SIG {aka struct DSA_SIG_st}'
[INFO] [stderr]      r_len = BN_num_bytes(sig->r);
[INFO] [stderr]                              ^
[INFO] [stderr] make[2]: *** [src/CMakeFiles/libssh2.dir/openssl.c.o] Error 1
[INFO] [stderr] make[2]: *** Waiting for unfinished jobs....
[INFO] [stderr] make[1]: *** [src/CMakeFiles/libssh2.dir/all] Error 2
[INFO] [stderr] make: *** [all] Error 2
[INFO] [stderr] thread 'main' panicked at '
[INFO] [stderr] command did not execute successfully, got: exit code: 2
[INFO] [stderr] 
[INFO] [stderr] build script failed, must exit now', /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/cmake-0.1.42/src/lib.rs:861:5
[INFO] [stderr] stack backtrace:
[INFO] [stderr]    0:     0x56062fff6294 - backtrace::backtrace::libunwind::trace::hb657e419eb382f5a
[INFO] [stderr]                                at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.46/src/backtrace/libunwind.rs:86
[INFO] [stderr]    1:     0x56062fff6294 - backtrace::backtrace::trace_unsynchronized::h63de2160a81d17d0
[INFO] [stderr]                                at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.46/src/backtrace/mod.rs:66
[INFO] [stderr]    2:     0x56062fff6294 - std::sys_common::backtrace::_print_fmt::hc542595b8774416c
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:78
[INFO] [stderr]    3:     0x56062fff6294 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h8b5627db94fbf233
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:59
[INFO] [stderr]    4:     0x56063001b64c - core::fmt::write::h7b159f05674a9488
[INFO] [stderr]                                at src/libcore/fmt/mod.rs:1069
[INFO] [stderr]    5:     0x56062fff2983 - std::io::Write::write_fmt::h8379227660cddc2e
[INFO] [stderr]                                at src/libstd/io/mod.rs:1504
[INFO] [stderr]    6:     0x56062fff8ed5 - std::sys_common::backtrace::_print::hb3b286bfcc94e0bc
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:62
[INFO] [stderr]    7:     0x56062fff8ed5 - std::sys_common::backtrace::print::hd75a13b009bc2bde
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:49
[INFO] [stderr]    8:     0x56062fff8ed5 - std::panicking::default_hook::{{closure}}::h95885250e71c9db2
[INFO] [stderr]                                at src/libstd/panicking.rs:198
[INFO] [stderr]    9:     0x56062fff8c12 - std::panicking::default_hook::h9c7a080b2c36bec1
[INFO] [stderr]                                at src/libstd/panicking.rs:218
[INFO] [stderr]   10:     0x56062fff9532 - std::panicking::rust_panic_with_hook::h3a55f8a9f7c957a1
[INFO] [stderr]                                at src/libstd/panicking.rs:511
[INFO] [stderr]   11:     0x56062fff911b - rust_begin_unwind
[INFO] [stderr]                                at src/libstd/panicking.rs:419
[INFO] [stderr]   12:     0x56062fff908b - std::panicking::begin_panic_fmt::h75248d4e7418d186
[INFO] [stderr]                                at src/libstd/panicking.rs:373
[INFO] [stderr]   13:     0x56062ff5f267 - cmake::fail::h7bd293347d1d625b
[INFO] [stderr]                                at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/cmake-0.1.42/src/lib.rs:861
[INFO] [stderr]   14:     0x56062ff5ebac - cmake::run::hc7c4e83f9c4be193
[INFO] [stderr]                                at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/cmake-0.1.42/src/lib.rs:839
[INFO] [stderr]   15:     0x56062ff5b306 - cmake::Config::build::h6a8e247229085462
[INFO] [stderr]                                at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/cmake-0.1.42/src/lib.rs:745
[INFO] [stderr]   16:     0x56062ff52910 - build_script_build::main::h578fdd7c22cf04ef
[INFO] [stderr]                                at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/libssh2-sys-0.1.41/build.rs:58
[INFO] [stderr]   17:     0x56062ff5721b - std::rt::lang_start::{{closure}}::h18b85690fc13f785
[INFO] [stderr]                                at /rustc/45d050cde277b22a755847338f2acc2c7b834141/src/libstd/rt.rs:67
[INFO] [stderr]   18:     0x56062fff9978 - std::rt::lang_start_internal::{{closure}}::h976a57c2451b294c
[INFO] [stderr]                                at src/libstd/rt.rs:52
[INFO] [stderr]   19:     0x56062fff9978 - std::panicking::try::do_call::he5f80a3843ae2933
[INFO] [stderr]                                at src/libstd/panicking.rs:331
[INFO] [stderr]   20:     0x56062fff9978 - std::panicking::try::h3e0cfec6df77fa26
[INFO] [stderr]                                at src/libstd/panicking.rs:274
[INFO] [stderr]   21:     0x56062fff9978 - std::panic::catch_unwind::h6f2dd2e86d8bf8b6
[INFO] [stderr]                                at src/libstd/panic.rs:394
[INFO] [stderr]   22:     0x56062fff9978 - std::rt::lang_start_internal::hb175d88e70ae7611
[INFO] [stderr]                                at src/libstd/rt.rs:51
[INFO] [stderr]   23:     0x56062ff571f7 - std::rt::lang_start::h3c94e1f4f07c5cfd
[INFO] [stderr]                                at /rustc/45d050cde277b22a755847338f2acc2c7b834141/src/libstd/rt.rs:67
[INFO] [stderr]   24:     0x56062ff5394a - main
[INFO] [stderr]   25:     0x7f4143e97b97 - __libc_start_main
[INFO] [stderr]   26:     0x56062ff51e9a - _start
[INFO] [stderr]   27:                0x0 - <unknown>
[INFO] [stderr] 
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error[E0308]: mismatched types
[INFO] [stderr]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/syntex_syntax-0.32.0/src/ext/base.rs:487:33
[INFO] [stderr]     |
[INFO] [stderr] 487 | ...                   ext::quote::expand_quote_item));
[INFO] [stderr]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected concrete lifetime, found bound lifetime parameter 'cx
[INFO] [stderr]     |
[INFO] [stderr]     = note: expected fn pointer `for<'r, 's, 'cx> fn(&'cx mut ext::base::ExtCtxt<'r>, codemap::Span, &'s [ast::TokenTree]) -> std::boxed::Box<(dyn ext::base::MacResult + 'cx)>`
[INFO] [stderr]                   found fn item `for<'r, 's, 't0> fn(&'r mut ext::base::ExtCtxt<'s>, codemap::Span, &'t0 [ast::TokenTree]) -> std::boxed::Box<dyn ext::base::MacResult> {ext::quote::expand_quote_item::<'_>}`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0308`.
[INFO] [stderr] error: could not compile `syntex_syntax`.
[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[E0502]: cannot borrow `cx.parse_sess.span_diagnostic` as immutable because it is also borrowed as mutable
[INFO] [stderr]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/syntex_syntax-0.39.0/src/ext/expand.rs:659:25
[INFO] [stderr]     |
[INFO] [stderr] 649 |         let mut expander = MacroExpander::new(&mut cx);
[INFO] [stderr]     |                                               ------- mutable borrow occurs here
[INFO] [stderr] ...
[INFO] [stderr] 659 |         let err_count = cx.parse_sess.span_diagnostic.err_count();
[INFO] [stderr]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ immutable borrow occurs here
[INFO] [stderr] 660 |         let mut ret = expander.fold_crate(c);
[INFO] [stderr]     |                       -------- mutable borrow later used here
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0502`.
[INFO] [stderr] error: could not compile `syntex_syntax`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "d11b3ff9771fdc5c5665ee1819d27f5ad0f60baeacbc055769ac39c62d45b79e"`
[INFO] running `"docker" "rm" "-f" "d11b3ff9771fdc5c5665ee1819d27f5ad0f60baeacbc055769ac39c62d45b79e"`
[INFO] [stdout] d11b3ff9771fdc5c5665ee1819d27f5ad0f60baeacbc055769ac39c62d45b79e