[INFO] fetching crate git-appraise 0.2.0... [INFO] checking git-appraise-0.2.0 against try#ea663bba38739867a4b75ac820991b4f5d093c3b for pr-62262-1 [INFO] extracting crate git-appraise 0.2.0 into /workspace/builds/worker-1/source [INFO] validating manifest of crates.io crate git-appraise 0.2.0 on toolchain ea663bba38739867a4b75ac820991b4f5d093c3b [INFO] running `"/workspace/cargo-home/bin/cargo" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "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-1/source/Cargo.toml [INFO] running `"/workspace/cargo-home/bin/cargo" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"` [INFO] running `"/workspace/cargo-home/bin/cargo" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "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] 7b1965eb7ec0a2c19d32a95d20568d76504950d1db8ecfcd1150f0e488bc519f [INFO] running `"docker" "start" "-a" "7b1965eb7ec0a2c19d32a95d20568d76504950d1db8ecfcd1150f0e488bc519f"` [INFO] [stderr] Compiling unicode-xid v0.0.3 [INFO] [stderr] Compiling bitflags v0.5.0 [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] Compiling term v0.2.14 [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] 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 type `for<'cx, 'r, 's> fn(&'cx mut ext::base::ExtCtxt<'r>, codemap::Span, &'s [ast::TokenTree]) -> std::boxed::Box<(dyn ext::base::MacResult + 'cx)>` [INFO] [stderr] found type `for<'r, 's, 't0> fn(&'r mut ext::base::ExtCtxt<'s>, codemap::Span, &'t0 [ast::TokenTree]) -> std::boxed::Box {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] warning: build failed, waiting for other jobs to finish... [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-6dc44f086c77dd80/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-7a967717cb27e5e5/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 7.4.0 [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-7a967717cb27e5e5/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/channel.c.o [INFO] [stderr] [ 9%] Building C object src/CMakeFiles/libssh2.dir/hostkey.c.o [INFO] [stderr] [ 13%] Building C object src/CMakeFiles/libssh2.dir/keepalive.c.o [INFO] [stderr] [ 18%] Building C object src/CMakeFiles/libssh2.dir/agent.c.o [INFO] [stderr] [ 22%] Building C object src/CMakeFiles/libssh2.dir/mac.c.o [INFO] [stderr] [ 27%] Building C object src/CMakeFiles/libssh2.dir/kex.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/misc.c.o [INFO] [stderr] [ 40%] Building C object src/CMakeFiles/libssh2.dir/openssl.c.o [INFO] [stderr] [ 45%] Building C object src/CMakeFiles/libssh2.dir/publickey.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/comp.c.o [INFO] [stderr] [ 59%] Building C object src/CMakeFiles/libssh2.dir/crypt.c.o [INFO] [stderr] [ 68%] Building C object src/CMakeFiles/libssh2.dir/packet.c.o [INFO] [stderr] [ 68%] Building C object src/CMakeFiles/libssh2.dir/pem.c.o [INFO] [stderr] [ 72%] Building C object src/CMakeFiles/libssh2.dir/scp.c.o [INFO] [stderr] [ 77%] Building C object src/CMakeFiles/libssh2.dir/session.c.o [INFO] [stderr] [ 81%] Building C object src/CMakeFiles/libssh2.dir/sftp.c.o [INFO] [stderr] src/CMakeFiles/libssh2.dir/build.make:62: recipe for target 'src/CMakeFiles/libssh2.dir/openssl.c.o' failed [INFO] [stderr] [ 86%] Building C object src/CMakeFiles/libssh2.dir/transport.c.o [INFO] [stderr] [ 90%] Building C object src/CMakeFiles/libssh2.dir/userauth.c.o [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: 0x55a80585dd2a - backtrace::backtrace::libunwind::trace::h62ee5d8325268128 [INFO] [stderr] at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.37/src/backtrace/libunwind.rs:88 [INFO] [stderr] 1: 0x55a80585dd2a - backtrace::backtrace::trace_unsynchronized::h0c2dcc20fbafc255 [INFO] [stderr] at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.37/src/backtrace/mod.rs:66 [INFO] [stderr] 2: 0x55a80585dd2a - std::sys_common::backtrace::_print_fmt::h5452375970baa944 [INFO] [stderr] at src/libstd/sys_common/backtrace.rs:77 [INFO] [stderr] 3: 0x55a80585dd2a - ::fmt::hdcdebd1ff29cf05e [INFO] [stderr] at src/libstd/sys_common/backtrace.rs:61 [INFO] [stderr] 4: 0x55a80587dbcc - core::fmt::write::h1a9d5001c75dea4b [INFO] [stderr] at src/libcore/fmt/mod.rs:1028 [INFO] [stderr] 5: 0x55a80585a527 - std::io::Write::write_fmt::hc50d5b4b29eeddb4 [INFO] [stderr] at src/libstd/io/mod.rs:1412 [INFO] [stderr] 6: 0x55a80586091e - std::sys_common::backtrace::_print::hd026679112716709 [INFO] [stderr] at src/libstd/sys_common/backtrace.rs:65 [INFO] [stderr] 7: 0x55a80586091e - std::sys_common::backtrace::print::hc2cd7cb69b3121ae [INFO] [stderr] at src/libstd/sys_common/backtrace.rs:50 [INFO] [stderr] 8: 0x55a80586091e - std::panicking::default_hook::{{closure}}::hac834639b20b63f7 [INFO] [stderr] at src/libstd/panicking.rs:187 [INFO] [stderr] 9: 0x55a805860621 - std::panicking::default_hook::h2fc956babc86e97d [INFO] [stderr] at src/libstd/panicking.rs:204 [INFO] [stderr] 10: 0x55a805860fb5 - std::panicking::rust_panic_with_hook::hb65306f2c92eac01 [INFO] [stderr] at src/libstd/panicking.rs:467 [INFO] [stderr] 11: 0x55a805860b52 - std::panicking::continue_panic_fmt::h22291b07d0b7f087 [INFO] [stderr] at src/libstd/panicking.rs:374 [INFO] [stderr] 12: 0x55a805860aac - std::panicking::begin_panic_fmt::h3306751e67e04457 [INFO] [stderr] at src/libstd/panicking.rs:329 [INFO] [stderr] 13: 0x55a8057b1596 - cmake::fail::hbf89419667a6a739 [INFO] [stderr] at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/cmake-0.1.42/src/lib.rs:861 [INFO] [stderr] 14: 0x55a8057b0e3a - cmake::run::h6cf73ef153384d8b [INFO] [stderr] at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/cmake-0.1.42/src/lib.rs:839 [INFO] [stderr] 15: 0x55a8057ad4b7 - cmake::Config::build::hfe8e59f46215e0d6 [INFO] [stderr] at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/cmake-0.1.42/src/lib.rs:745 [INFO] [stderr] 16: 0x55a8057a3cb2 - build_script_build::main::hd7bcdd8d47ad725c [INFO] [stderr] at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/libssh2-sys-0.1.41/build.rs:58 [INFO] [stderr] 17: 0x55a8057a5780 - std::rt::lang_start::{{closure}}::h0a6dcfc96b62e07f [INFO] [stderr] at /rustc/ea663bba38739867a4b75ac820991b4f5d093c3b/src/libstd/rt.rs:61 [INFO] [stderr] 18: 0x55a8058609e3 - std::rt::lang_start_internal::{{closure}}::hbff5fe9c19d221a8 [INFO] [stderr] at src/libstd/rt.rs:48 [INFO] [stderr] 19: 0x55a8058609e3 - std::panicking::try::do_call::h330d2d9ad3936443 [INFO] [stderr] at src/libstd/panicking.rs:286 [INFO] [stderr] 20: 0x55a805867cda - __rust_maybe_catch_panic [INFO] [stderr] at src/libpanic_unwind/lib.rs:80 [INFO] [stderr] 21: 0x55a8058614ad - std::panicking::try::h0001f4cc821eb44d [INFO] [stderr] at src/libstd/panicking.rs:265 [INFO] [stderr] 22: 0x55a8058614ad - std::panic::catch_unwind::hc7071df6aa2e6fb8 [INFO] [stderr] at src/libstd/panic.rs:394 [INFO] [stderr] 23: 0x55a8058614ad - std::rt::lang_start_internal::hd852b1b003ba5a93 [INFO] [stderr] at src/libstd/rt.rs:47 [INFO] [stderr] 24: 0x55a8057a5759 - std::rt::lang_start::h7bb3eba24bb57289 [INFO] [stderr] at /rustc/ea663bba38739867a4b75ac820991b4f5d093c3b/src/libstd/rt.rs:61 [INFO] [stderr] 25: 0x55a8057a4d3a - main [INFO] [stderr] 26: 0x7ff5a79c4b97 - __libc_start_main [INFO] [stderr] 27: 0x55a8057a320a - _start [INFO] [stderr] 28: 0x0 - [INFO] [stderr] [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" "7b1965eb7ec0a2c19d32a95d20568d76504950d1db8ecfcd1150f0e488bc519f"` [INFO] running `"docker" "rm" "-f" "7b1965eb7ec0a2c19d32a95d20568d76504950d1db8ecfcd1150f0e488bc519f"` [INFO] [stdout] 7b1965eb7ec0a2c19d32a95d20568d76504950d1db8ecfcd1150f0e488bc519f