[INFO] fetching crate cluConcatBytes 0.1.5...
[INFO] testing cluConcatBytes-0.1.5 against 1.60.0 for beta-1.61-1
[INFO] extracting crate cluConcatBytes 0.1.5 into /workspace/builds/worker-100/source
[INFO] validating manifest of crates.io crate cluConcatBytes 0.1.5 on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate cluConcatBytes 0.1.5
[INFO] finished tweaking crates.io crate cluConcatBytes 0.1.5
[INFO] tweaked toml for crates.io crate cluConcatBytes 0.1.5 written to /workspace/builds/worker-100/source/Cargo.toml
[INFO] crate crates.io crate cluConcatBytes 0.1.5 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-100/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-100/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] dc748aeb05076752e96019400138de05fb12f8f86704b8f1def91bb510978d84
[INFO] running `Command { std: "docker" "start" "-a" "dc748aeb05076752e96019400138de05fb12f8f86704b8f1def91bb510978d84", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dc748aeb05076752e96019400138de05fb12f8f86704b8f1def91bb510978d84", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dc748aeb05076752e96019400138de05fb12f8f86704b8f1def91bb510978d84", kill_on_drop: false }`
[INFO] [stdout] dc748aeb05076752e96019400138de05fb12f8f86704b8f1def91bb510978d84
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-100/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-100/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 91739fa470209936c70545db0cec262c00b5614645f23f1311496f6400a4d377
[INFO] running `Command { std: "docker" "start" "-a" "91739fa470209936c70545db0cec262c00b5614645f23f1311496f6400a4d377", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling cluConcatBytes v0.1.5 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]    --> src/lib.rs:116:12
[INFO] [stdout]     |
[INFO] [stdout] 116 | #![feature(plugin_registrar)]
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^ feature has been removed
[INFO] [stdout]     |
[INFO] [stdout]     = note: a __rustc_plugin_registrar symbol must now be defined instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0463]: can't find crate for `syntax`
[INFO] [stdout]    --> src/lib.rs:120:1
[INFO] [stdout]     |
[INFO] [stdout] 120 | extern crate syntax;
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0462]: found staticlib `rustc` instead of rlib or dylib
[INFO] [stdout]    --> src/lib.rs:121:1
[INFO] [stdout]     |
[INFO] [stdout] 121 | extern crate rustc;
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: please recompile that crate using --crate-type lib
[INFO] [stdout]     = note: the following crate versions were found:
[INFO] [stdout]             crate `rustc`: /opt/rustwide/rustup-home/toolchains/1.60.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc-stable_rt.msan.a
[INFO] [stdout]             crate `rustc`: /opt/rustwide/rustup-home/toolchains/1.60.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc-stable_rt.lsan.a
[INFO] [stdout]             crate `rustc`: /opt/rustwide/rustup-home/toolchains/1.60.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc-stable_rt.tsan.a
[INFO] [stdout]             crate `rustc`: /opt/rustwide/rustup-home/toolchains/1.60.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc-stable_rt.asan.a
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0463]: can't find crate for `rustc_plugin`
[INFO] [stdout]    --> src/lib.rs:122:1
[INFO] [stdout]     |
[INFO] [stdout] 122 | extern crate rustc_plugin;
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe you need to install the missing components with: `rustup component add rust-src rustc-dev llvm-tools-preview`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find attribute `plugin_registrar` in this scope
[INFO] [stdout]   --> src/nightly.rs:18:3
[INFO] [stdout]    |
[INFO] [stdout] 18 | #[plugin_registrar]
[INFO] [stdout]    |   ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `plugin_registrar` is in scope, but it is a function, not an attribute
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `TokenKind`
[INFO] [stdout]   --> src/nightly.rs:33:18
[INFO] [stdout]    |
[INFO] [stdout] 33 |         if parser.eat(&TokenKind::At) {
[INFO] [stdout]    |                        ^^^^^^^^^ use of undeclared type `TokenKind`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `DummyResult`
[INFO] [stdout]   --> src/nightly.rs:42:12
[INFO] [stdout]    |
[INFO] [stdout] 42 |                 return DummyResult::any(sp);
[INFO] [stdout]    |                        ^^^^^^^^^^^ use of undeclared type `DummyResult`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `TokenKind`
[INFO] [stdout]   --> src/nightly.rs:46:21
[INFO] [stdout]    |
[INFO] [stdout] 46 |         while parser.eat(&TokenKind::Comma) {
[INFO] [stdout]    |                           ^^^^^^^^^ use of undeclared type `TokenKind`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `DummyResult`
[INFO] [stdout]   --> src/nightly.rs:57:13
[INFO] [stdout]    |
[INFO] [stdout] 57 |                     return DummyResult::any(sp);
[INFO] [stdout]    |                            ^^^^^^^^^^^ use of undeclared type `DummyResult`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `DummyResult`
[INFO] [stdout]   --> src/nightly.rs:63:11
[INFO] [stdout]    |
[INFO] [stdout] 63 |             return DummyResult::any(sp);
[INFO] [stdout]    |                    ^^^^^^^^^^^ use of undeclared type `DummyResult`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `ExprKind`
[INFO] [stdout]   --> src/nightly.rs:70:4
[INFO] [stdout]    |
[INFO] [stdout] 70 |             ExprKind::Lit(ref l) => {
[INFO] [stdout]    |             ^^^^^^^^ use of undeclared type `ExprKind`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `LitKind`
[INFO] [stdout]   --> src/nightly.rs:72:6
[INFO] [stdout]    |
[INFO] [stdout] 72 |                     LitKind::Str(ref array, _) => {
[INFO] [stdout]    |                     ^^^^^^^ use of undeclared type `LitKind`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `LitKind`
[INFO] [stdout]   --> src/nightly.rs:78:25
[INFO] [stdout]    |
[INFO] [stdout] 78 | ...                   cx.expr_lit(sp, LitKind::Int(*a as u128, LitIntType::Unsigned(UintTy::U8)))
[INFO] [stdout]    |                                       ^^^^^^^ use of undeclared type `LitKind`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `LitIntType`
[INFO] [stdout]   --> src/nightly.rs:78:50
[INFO] [stdout]    |
[INFO] [stdout] 78 | ...                   cx.expr_lit(sp, LitKind::Int(*a as u128, LitIntType::Unsigned(UintTy::U8)))
[INFO] [stdout]    |                                                                ^^^^^^^^^^ use of undeclared type `LitIntType`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `UintTy`
[INFO] [stdout]   --> src/nightly.rs:78:71
[INFO] [stdout]    |
[INFO] [stdout] 78 | ...                   cx.expr_lit(sp, LitKind::Int(*a as u128, LitIntType::Unsigned(UintTy::U8)))
[INFO] [stdout]    |                                                                                     ^^^^^^ use of undeclared type `UintTy`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `LitKind`
[INFO] [stdout]   --> src/nightly.rs:82:6
[INFO] [stdout]    |
[INFO] [stdout] 82 |                     LitKind::ByteStr(ref array) => {
[INFO] [stdout]    |                     ^^^^^^^ use of undeclared type `LitKind`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `LitKind`
[INFO] [stdout]   --> src/nightly.rs:86:25
[INFO] [stdout]    |
[INFO] [stdout] 86 | ...                   cx.expr_lit(sp, LitKind::Int(*a as u128, LitIntType::Unsigned(UintTy::U8)))
[INFO] [stdout]    |                                       ^^^^^^^ use of undeclared type `LitKind`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `LitIntType`
[INFO] [stdout]   --> src/nightly.rs:86:50
[INFO] [stdout]    |
[INFO] [stdout] 86 | ...                   cx.expr_lit(sp, LitKind::Int(*a as u128, LitIntType::Unsigned(UintTy::U8)))
[INFO] [stdout]    |                                                                ^^^^^^^^^^ use of undeclared type `LitIntType`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `UintTy`
[INFO] [stdout]   --> src/nightly.rs:86:71
[INFO] [stdout]    |
[INFO] [stdout] 86 | ...                   cx.expr_lit(sp, LitKind::Int(*a as u128, LitIntType::Unsigned(UintTy::U8)))
[INFO] [stdout]    |                                                                                     ^^^^^^ use of undeclared type `UintTy`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `LitKind`
[INFO] [stdout]    --> src/nightly.rs:101:6
[INFO] [stdout]     |
[INFO] [stdout] 101 |                     LitKind::Int(ref a, LitIntType::Unsigned(UintTy::U8)) 
[INFO] [stdout]     |                     ^^^^^^^ use of undeclared type `LitKind`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `LitIntType`
[INFO] [stdout]    --> src/nightly.rs:101:26
[INFO] [stdout]     |
[INFO] [stdout] 101 |                     LitKind::Int(ref a, LitIntType::Unsigned(UintTy::U8)) 
[INFO] [stdout]     |                                         ^^^^^^^^^^ use of undeclared type `LitIntType`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `UintTy`
[INFO] [stdout]    --> src/nightly.rs:101:47
[INFO] [stdout]     |
[INFO] [stdout] 101 |                     LitKind::Int(ref a, LitIntType::Unsigned(UintTy::U8)) 
[INFO] [stdout]     |                                                              ^^^^^^ use of undeclared type `UintTy`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `LitKind`
[INFO] [stdout]    --> src/nightly.rs:102:8
[INFO] [stdout]     |
[INFO] [stdout] 102 |                     | LitKind::Int(ref a, LitIntType::Signed(IntTy::I8))
[INFO] [stdout]     |                       ^^^^^^^ use of undeclared type `LitKind`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `LitIntType`
[INFO] [stdout]    --> src/nightly.rs:102:28
[INFO] [stdout]     |
[INFO] [stdout] 102 |                     | LitKind::Int(ref a, LitIntType::Signed(IntTy::I8))
[INFO] [stdout]     |                                           ^^^^^^^^^^ use of undeclared type `LitIntType`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `IntTy`
[INFO] [stdout]    --> src/nightly.rs:102:47
[INFO] [stdout]     |
[INFO] [stdout] 102 |                     | LitKind::Int(ref a, LitIntType::Signed(IntTy::I8))
[INFO] [stdout]     |                                                              ^^^^^ use of undeclared type `IntTy`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `LitKind`
[INFO] [stdout]    --> src/nightly.rs:105:24
[INFO] [stdout]     |
[INFO] [stdout] 105 | ...                   cx.expr_lit(sp, LitKind::Int(*a as u128, LitIntType::Unsigned(UintTy::U8)))
[INFO] [stdout]     |                                       ^^^^^^^ use of undeclared type `LitKind`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `LitIntType`
[INFO] [stdout]    --> src/nightly.rs:105:49
[INFO] [stdout]     |
[INFO] [stdout] 105 | ...                   cx.expr_lit(sp, LitKind::Int(*a as u128, LitIntType::Unsigned(UintTy::U8)))
[INFO] [stdout]     |                                                                ^^^^^^^^^^ use of undeclared type `LitIntType`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `UintTy`
[INFO] [stdout]    --> src/nightly.rs:105:70
[INFO] [stdout]     |
[INFO] [stdout] 105 | ...                   cx.expr_lit(sp, LitKind::Int(*a as u128, LitIntType::Unsigned(UintTy::U8)))
[INFO] [stdout]     |                                                                                     ^^^^^^ use of undeclared type `UintTy`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `LitKind`
[INFO] [stdout]    --> src/nightly.rs:109:6
[INFO] [stdout]     |
[INFO] [stdout] 109 |                     LitKind::Byte(ref a) => {
[INFO] [stdout]     |                     ^^^^^^^ use of undeclared type `LitKind`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `LitKind`
[INFO] [stdout]    --> src/nightly.rs:111:24
[INFO] [stdout]     |
[INFO] [stdout] 111 | ...                   cx.expr_lit(sp, LitKind::Int(*a as u128, LitIntType::Unsigned(UintTy::U8)))
[INFO] [stdout]     |                                       ^^^^^^^ use of undeclared type `LitKind`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `LitIntType`
[INFO] [stdout]    --> src/nightly.rs:111:49
[INFO] [stdout]     |
[INFO] [stdout] 111 | ...                   cx.expr_lit(sp, LitKind::Int(*a as u128, LitIntType::Unsigned(UintTy::U8)))
[INFO] [stdout]     |                                                                ^^^^^^^^^^ use of undeclared type `LitIntType`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `UintTy`
[INFO] [stdout]    --> src/nightly.rs:111:70
[INFO] [stdout]     |
[INFO] [stdout] 111 | ...                   cx.expr_lit(sp, LitKind::Int(*a as u128, LitIntType::Unsigned(UintTy::U8)))
[INFO] [stdout]     |                                                                                     ^^^^^^ use of undeclared type `UintTy`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `DummyResult`
[INFO] [stdout]    --> src/nightly.rs:116:14
[INFO] [stdout]     |
[INFO] [stdout] 116 |                         return DummyResult::any(sp);
[INFO] [stdout]     |                                ^^^^^^^^^^^ use of undeclared type `DummyResult`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `DummyResult`
[INFO] [stdout]    --> src/nightly.rs:122:12
[INFO] [stdout]     |
[INFO] [stdout] 122 |                 return DummyResult::any(sp);
[INFO] [stdout]     |                        ^^^^^^^^^^^ use of undeclared type `DummyResult`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `ExprKind`
[INFO] [stdout]    --> src/nightly.rs:129:31
[INFO] [stdout]     |
[INFO] [stdout] 129 |     let mut result = cx.expr(sp, ExprKind::Array(r_array));
[INFO] [stdout]     |                                  ^^^^^^^^ use of undeclared type `ExprKind`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `ExprKind`
[INFO] [stdout]    --> src/nightly.rs:135:4
[INFO] [stdout]     |
[INFO] [stdout] 135 |             ExprKind::AddrOf(Mutability::Immutable,
[INFO] [stdout]     |             ^^^^^^^^ use of undeclared type `ExprKind`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Mutability`
[INFO] [stdout]    --> src/nightly.rs:135:21
[INFO] [stdout]     |
[INFO] [stdout] 135 |             ExprKind::AddrOf(Mutability::Immutable,
[INFO] [stdout]     |                              ^^^^^^^^^^ use of undeclared type `Mutability`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `MacEager`
[INFO] [stdout]    --> src/nightly.rs:141:2
[INFO] [stdout]     |
[INFO] [stdout] 141 |     MacEager::expr({
[INFO] [stdout]     |     ^^^^^^^^ use of undeclared type `MacEager`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `Registry` in this scope
[INFO] [stdout]   --> src/nightly.rs:19:35
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub fn plugin_registrar(reg: &mut Registry) {
[INFO] [stdout]    |                                   ^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `ExtCtxt` in this scope
[INFO] [stdout]   --> src/nightly.rs:24:22
[INFO] [stdout]    |
[INFO] [stdout] 24 | pub fn cstr(cx: &mut ExtCtxt, sp: Span, args: &[TokenTree]) -> Box<dyn MacResult + 'static> {
[INFO] [stdout]    |                      ^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `Span` in this scope
[INFO] [stdout]   --> src/nightly.rs:24:35
[INFO] [stdout]    |
[INFO] [stdout] 24 | pub fn cstr(cx: &mut ExtCtxt, sp: Span, args: &[TokenTree]) -> Box<dyn MacResult + 'static> {
[INFO] [stdout]    |                                   ^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `TokenTree` in this scope
[INFO] [stdout]   --> src/nightly.rs:24:49
[INFO] [stdout]    |
[INFO] [stdout] 24 | pub fn cstr(cx: &mut ExtCtxt, sp: Span, args: &[TokenTree]) -> Box<dyn MacResult + 'static> {
[INFO] [stdout]    |                                                 ^^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0405]: cannot find trait `MacResult` in this scope
[INFO] [stdout]   --> src/nightly.rs:24:72
[INFO] [stdout]    |
[INFO] [stdout] 24 | pub fn cstr(cx: &mut ExtCtxt, sp: Span, args: &[TokenTree]) -> Box<dyn MacResult + 'static> {
[INFO] [stdout]    |            -                                                           ^^^^^^^^^ not found in this scope
[INFO] [stdout]    |            |
[INFO] [stdout]    |            help: you might be missing a type parameter: `<MacResult>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]    --> src/lib.rs:116:1
[INFO] [stdout]     |
[INFO] [stdout] 116 | #![feature(plugin_registrar)]
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]    --> src/lib.rs:117:1
[INFO] [stdout]     |
[INFO] [stdout] 117 | #![feature(rustc_private)]
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused label
[INFO] [stdout]   --> src/nightly.rs:68:2
[INFO] [stdout]    |
[INFO] [stdout] 68 |     'looper: for unk in array_expr.into_iter() {
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_labels)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 45 previous errors; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0405, E0412, E0433, E0463, E0554, E0557.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `cluConcatBytes` due to 46 previous errors; 1 warning emitted
[INFO] [stdout] For more information about an error, try `rustc --explain E0405`.
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "91739fa470209936c70545db0cec262c00b5614645f23f1311496f6400a4d377", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "91739fa470209936c70545db0cec262c00b5614645f23f1311496f6400a4d377", kill_on_drop: false }`
[INFO] [stdout] 91739fa470209936c70545db0cec262c00b5614645f23f1311496f6400a4d377