[INFO] cloning repository https://github.com/jadencarver/superconductor
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jadencarver/superconductor" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjadencarver%2Fsuperconductor", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjadencarver%2Fsuperconductor'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] adc8d3e7ef48a3f3117d3cee72fcd83b730a67f2
[INFO] checking jadencarver/superconductor against try#3d9fdbff4f377de96b3a51174e7a64086bee9a5c for pr-81477
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjadencarver%2Fsuperconductor" "/workspace/builds/worker-13/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-13/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jadencarver/superconductor on toolchain 3d9fdbff4f377de96b3a51174e7a64086bee9a5c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3d9fdbff4f377de96b3a51174e7a64086bee9a5c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/jadencarver/superconductor
[INFO] finished tweaking git repo https://github.com/jadencarver/superconductor
[INFO] tweaked toml for git repo https://github.com/jadencarver/superconductor written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate git repo https://github.com/jadencarver/superconductor already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3d9fdbff4f377de96b3a51174e7a64086bee9a5c" "fetch" "--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 async-trait v0.1.29
[INFO] [stderr]   Downloaded bytecount v0.6.0
[INFO] [stderr]   Downloaded serde_codegen v0.8.23
[INFO] [stderr]   Downloaded actix-web-actors v2.0.0
[INFO] [stderr]   Downloaded syn v0.10.8
[INFO] [stderr]   Downloaded serde_derive v0.8.23
[INFO] [stderr]   Downloaded time-macros-impl v0.1.0
[INFO] [stderr]   Downloaded fsevent v2.0.1
[INFO] [stderr]   Downloaded serde_codegen_internals v0.11.3
[INFO] [stderr]   Downloaded git2 v0.13.1
[INFO] [stderr]   Downloaded rsass v0.12.2
[INFO] [stderr]   Downloaded serde_xml v0.9.1
[INFO] [stderr]   Downloaded time v0.2.9
[INFO] [stderr]   Downloaded libgit2-sys v0.12.2+1.0.0
[INFO] [stderr]   Downloaded fsevent-sys v3.0.0
[INFO] [stderr]   Downloaded standback v0.2.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+3d9fdbff4f377de96b3a51174e7a64086bee9a5c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c1d73375ca8e07f6df1d5d6edeeb17ef03780fa29624df5003249dc1db385e27
[INFO] running `Command { std: "docker" "start" "-a" "c1d73375ca8e07f6df1d5d6edeeb17ef03780fa29624df5003249dc1db385e27", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c1d73375ca8e07f6df1d5d6edeeb17ef03780fa29624df5003249dc1db385e27", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c1d73375ca8e07f6df1d5d6edeeb17ef03780fa29624df5003249dc1db385e27", kill_on_drop: false }`
[INFO] [stdout] c1d73375ca8e07f6df1d5d6edeeb17ef03780fa29624df5003249dc1db385e27
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+3d9fdbff4f377de96b3a51174e7a64086bee9a5c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f616f4458bacdbc52a5459b5581b09272514f4b35025325e85c861c9ff9b181f
[INFO] running `Command { std: "docker" "start" "-a" "f616f4458bacdbc52a5459b5581b09272514f4b35025325e85c861c9ff9b181f", 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]    Compiling libc v0.2.68
[INFO] [stderr]    Compiling proc-macro2 v1.0.10
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling syn v1.0.17
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]     Checking futures-core v0.3.4
[INFO] [stderr]     Checking futures-sink v0.3.4
[INFO] [stderr]    Compiling proc-macro-hack v0.5.15
[INFO] [stderr]     Checking bytes v0.5.4
[INFO] [stderr]     Checking smallvec v1.2.0
[INFO] [stderr]     Checking fnv v1.0.6
[INFO] [stderr]    Compiling proc-macro-nested v0.1.4
[INFO] [stderr]     Checking arc-swap v0.4.5
[INFO] [stderr]     Checking futures-io v0.3.4
[INFO] [stderr]     Checking futures-task v0.3.4
[INFO] [stderr]     Checking pin-project-lite v0.1.4
[INFO] [stderr]     Checking pin-utils v0.1.0-alpha.4
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]     Checking itoa v0.4.5
[INFO] [stderr]    Compiling failure_derive v0.1.7
[INFO] [stderr]     Checking copyless v0.1.4
[INFO] [stderr]     Checking ppv-lite86 v0.2.6
[INFO] [stderr]    Compiling ryu v1.0.3
[INFO] [stderr]     Checking either v1.5.3
[INFO] [stderr]    Compiling serde v1.0.106
[INFO] [stderr]     Checking rustc-demangle v0.1.16
[INFO] [stderr]    Compiling unicode-segmentation v1.6.0
[INFO] [stderr]     Checking linked-hash-map v0.5.2
[INFO] [stderr]    Compiling crc32fast v1.2.0
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]     Checking adler32 v1.0.4
[INFO] [stderr]    Compiling pkg-config v0.3.17
[INFO] [stderr]    Compiling encoding_rs v0.8.22
[INFO] [stderr]     Checking regex-syntax v0.6.17
[INFO] [stderr]     Checking dtoa v0.4.5
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]    Compiling arrayvec v0.4.12
[INFO] [stderr]     Checking base64 v0.11.0
[INFO] [stderr]    Compiling rustversion v1.0.2
[INFO] [stderr]    Compiling quote v0.3.15
[INFO] [stderr]    Compiling version_check v0.9.1
[INFO] [stderr]     Checking nodrop v0.1.14
[INFO] [stderr]    Compiling unicode-xid v0.0.4
[INFO] [stderr]     Checking static_assertions v0.3.4
[INFO] [stderr]    Compiling standback v0.2.2
[INFO] [stderr]    Compiling maud_htmlescape v0.17.0 (https://github.com/lfairy/maud.git#dfa7d5a8)
[INFO] [stderr]    Compiling matches v0.1.8
[INFO] [stderr]     Checking bytecount v0.6.0
[INFO] [stderr]     Checking serde v0.8.23
[INFO] [stderr]     Checking numtoa v0.1.0
[INFO] [stderr]     Checking base64 v0.12.0
[INFO] [stderr]     Checking md5 v0.7.0
[INFO] [stderr]     Checking lock_api v0.3.3
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]     Checking futures-channel v0.3.4
[INFO] [stderr]     Checking unicode-normalization v0.1.12
[INFO] [stderr]     Checking miniz_oxide v0.3.6
[INFO] [stderr]     Checking lru-cache v0.1.2
[INFO] [stderr]     Checking yaml-rust v0.4.3
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]     Checking http v0.2.1
[INFO] [stderr]     Checking bytestring v0.1.5
[INFO] [stderr]    Compiling syn v0.10.8
[INFO] [stderr]    Compiling heck v0.3.1
[INFO] [stderr]     Checking fxhash v0.2.1
[INFO] [stdout] error: Trailing semicolon in macro
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/syn-0.10.8/src/helper.rs:46:31
[INFO] [stdout]     |
[INFO] [stdout] 46  |           option!($i, call!($f));
[INFO] [stdout]     |                                 ^
[INFO] [stdout]     | 
[INFO] [stdout]    ::: /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/syn-0.10.8/src/attr.rs:147:5
[INFO] [stdout]     |
[INFO] [stdout] 147 | /     named!(pub outer_attr -> Attribute, alt!(
[INFO] [stdout] 148 | |         do_parse!(
[INFO] [stdout] 149 | |             punct!("#") >>
[INFO] [stdout] 150 | |             punct!("[") >>
[INFO] [stdout] ...   |
[INFO] [stdout] 186 | |         )
[INFO] [stdout] 187 | |     ));
[INFO] [stdout]     | |_______- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `option` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Trailing semicolon in macro
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/syn-0.10.8/src/helper.rs:78:41
[INFO] [stdout]    |
[INFO] [stdout] 78 |           tap!($i, $name: call!($f) => $e);
[INFO] [stdout]    |                                           ^
[INFO] [stdout]    | 
[INFO] [stdout]   ::: /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/syn-0.10.8/src/constant.rs:47:5
[INFO] [stdout]    |
[INFO] [stdout] 47 | /     named!(pub const_expr -> ConstExpr, do_parse!(
[INFO] [stdout] 48 | |         mut e: alt!(
[INFO] [stdout] 49 | |             expr_unary
[INFO] [stdout] 50 | |             |
[INFO] [stdout] ...  |
[INFO] [stdout] 75 | |         (e)
[INFO] [stdout] 76 | |     ));
[INFO] [stdout]    | |_______- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this error originates in the macro `tap` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Trailing semicolon in macro
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/syn-0.10.8/src/helper.rs:78:41
[INFO] [stdout]    |
[INFO] [stdout] 78 |           tap!($i, $name: call!($f) => $e);
[INFO] [stdout]    |                                           ^
[INFO] [stdout]    | 
[INFO] [stdout]   ::: /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/syn-0.10.8/src/constant.rs:47:5
[INFO] [stdout]    |
[INFO] [stdout] 47 | /     named!(pub const_expr -> ConstExpr, do_parse!(
[INFO] [stdout] 48 | |         mut e: alt!(
[INFO] [stdout] 49 | |             expr_unary
[INFO] [stdout] 50 | |             |
[INFO] [stdout] ...  |
[INFO] [stdout] 75 | |         (e)
[INFO] [stdout] 76 | |     ));
[INFO] [stdout]    | |_______- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this error originates in the macro `tap` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Trailing semicolon in macro
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/syn-0.10.8/src/helper.rs:78:41
[INFO] [stdout]    |
[INFO] [stdout] 78 |           tap!($i, $name: call!($f) => $e);
[INFO] [stdout]    |                                           ^
[INFO] [stdout]    | 
[INFO] [stdout]   ::: /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/syn-0.10.8/src/constant.rs:47:5
[INFO] [stdout]    |
[INFO] [stdout] 47 | /     named!(pub const_expr -> ConstExpr, do_parse!(
[INFO] [stdout] 48 | |         mut e: alt!(
[INFO] [stdout] 49 | |             expr_unary
[INFO] [stdout] 50 | |             |
[INFO] [stdout] ...  |
[INFO] [stdout] 75 | |         (e)
[INFO] [stdout] 76 | |     ));
[INFO] [stdout]    | |_______- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this error originates in the macro `tap` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Trailing semicolon in macro
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/syn-0.10.8/src/helper.rs:78:41
[INFO] [stdout]    |
[INFO] [stdout] 78 |           tap!($i, $name: call!($f) => $e);
[INFO] [stdout]    |                                           ^
[INFO] [stdout]    | 
[INFO] [stdout]   ::: /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/syn-0.10.8/src/constant.rs:47:5
[INFO] [stdout]    |
[INFO] [stdout] 47 | /     named!(pub const_expr -> ConstExpr, do_parse!(
[INFO] [stdout] 48 | |         mut e: alt!(
[INFO] [stdout] 49 | |             expr_unary
[INFO] [stdout] 50 | |             |
[INFO] [stdout] ...  |
[INFO] [stdout] 75 | |         (e)
[INFO] [stdout] 76 | |     ));
[INFO] [stdout]    | |_______- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this error originates in the macro `tap` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Trailing semicolon in macro
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/syn-0.10.8/src/helper.rs:46:31
[INFO] [stdout]     |
[INFO] [stdout] 46  |           option!($i, call!($f));
[INFO] [stdout]     |                                 ^
[INFO] [stdout]     | 
[INFO] [stdout]    ::: /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/syn-0.10.8/src/ty.rs:301:5
[INFO] [stdout]     |
[INFO] [stdout] 301 | /     named!(ty_rptr -> Ty, do_parse!(
[INFO] [stdout] 302 | |         punct!("&") >>
[INFO] [stdout] 303 | |         life: option!(lifetime) >>
[INFO] [stdout] 304 | |         mutability: mutability >>
[INFO] [stdout] ...   |
[INFO] [stdout] 309 | |         })))
[INFO] [stdout] 310 | |     ));
[INFO] [stdout]     | |_______- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `option` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Trailing semicolon in macro
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/syn-0.10.8/src/helper.rs:46:31
[INFO] [stdout]     |
[INFO] [stdout] 46  |           option!($i, call!($f));
[INFO] [stdout]     |                                 ^
[INFO] [stdout]     | 
[INFO] [stdout]    ::: /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/syn-0.10.8/src/ty.rs:312:5
[INFO] [stdout]     |
[INFO] [stdout] 312 | /     named!(ty_bare_fn -> Ty, do_parse!(
[INFO] [stdout] 313 | |         lifetimes: opt_vec!(do_parse!(
[INFO] [stdout] 314 | |             keyword!("for") >>
[INFO] [stdout] 315 | |             punct!("<") >>
[INFO] [stdout] ...   |
[INFO] [stdout] 342 | |         })))
[INFO] [stdout] 343 | |     ));
[INFO] [stdout]     | |_______- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `option` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Trailing semicolon in macro
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/syn-0.10.8/src/helper.rs:46:31
[INFO] [stdout]     |
[INFO] [stdout] 46  |           option!($i, call!($f));
[INFO] [stdout]     |                                 ^
[INFO] [stdout]     | 
[INFO] [stdout]    ::: /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/syn-0.10.8/src/ty.rs:354:5
[INFO] [stdout]     |
[INFO] [stdout] 354 | /     named!(ty_path -> Ty, do_parse!(
[INFO] [stdout] 355 | |         qpath: qpath >>
[INFO] [stdout] 356 | |         parenthesized: cond!(
[INFO] [stdout] 357 | |             qpath.1.segments.last().unwrap().parameters == PathParameters::none(),
[INFO] [stdout] ...   |
[INFO] [stdout] 372 | |         })
[INFO] [stdout] 373 | |     ));
[INFO] [stdout]     | |_______- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `option` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Trailing semicolon in macro
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/syn-0.10.8/src/helper.rs:46:31
[INFO] [stdout]     |
[INFO] [stdout] 46  |           option!($i, call!($f));
[INFO] [stdout]     |                                 ^
[INFO] [stdout]     | 
[INFO] [stdout]    ::: /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/syn-0.10.8/src/ty.rs:457:5
[INFO] [stdout]     |
[INFO] [stdout] 457 | /     named!(path_segment -> PathSegment, alt!(
[INFO] [stdout] 458 | |         do_parse!(
[INFO] [stdout] 459 | |             id: option!(ident) >>
[INFO] [stdout] 460 | |             punct!("<") >>
[INFO] [stdout] ...   |
[INFO] [stdout] 495 | |         ), Into::into)
[INFO] [stdout] 496 | |     ));
[INFO] [stdout]     | |_______- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `option` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Trailing semicolon in macro
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/syn-0.10.8/src/helper.rs:46:31
[INFO] [stdout]     |
[INFO] [stdout] 46  |           option!($i, call!($f));
[INFO] [stdout]     |                                 ^
[INFO] [stdout]     | 
[INFO] [stdout]    ::: /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/syn-0.10.8/src/ty.rs:547:5
[INFO] [stdout]     |
[INFO] [stdout] 547 | /     named!(pub abi -> Abi, do_parse!(
[INFO] [stdout] 548 | |         keyword!("extern") >>
[INFO] [stdout] 549 | |         name: option!(quoted_string) >>
[INFO] [stdout] 550 | |         (match name {
[INFO] [stdout] ...   |
[INFO] [stdout] 553 | |         })
[INFO] [stdout] 554 | |     ));
[INFO] [stdout]     | |_______- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `option` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]     Checking log v0.3.9
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]    Compiling num-integer v0.1.42
[INFO] [stderr]    Compiling indexmap v1.3.2
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling num-rational v0.2.4
[INFO] [stderr]     Checking aho-corasick v0.7.10
[INFO] [stderr]    Compiling nom v5.1.1
[INFO] [stderr]    Compiling quote v1.0.3
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking net2 v0.2.33
[INFO] [stderr]     Checking signal-hook-registry v1.2.0
[INFO] [stderr] error: could not compile `syn`
[INFO] [stdout] error: aborting due to 10 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[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" "f616f4458bacdbc52a5459b5581b09272514f4b35025325e85c861c9ff9b181f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f616f4458bacdbc52a5459b5581b09272514f4b35025325e85c861c9ff9b181f", kill_on_drop: false }`
[INFO] [stdout] f616f4458bacdbc52a5459b5581b09272514f4b35025325e85c861c9ff9b181f