[INFO] fetching crate nibble 0.1.0... [INFO] testing nibble-0.1.0 against 1.44.0 for beta-1.45-1 [INFO] extracting crate nibble 0.1.0 into /workspace/builds/worker-4/source [INFO] validating manifest of crates.io crate nibble 0.1.0 on toolchain 1.44.0 [INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started tweaking crates.io crate nibble 0.1.0 [INFO] finished tweaking crates.io crate nibble 0.1.0 [INFO] tweaked toml for crates.io crate nibble 0.1.0 written to /workspace/builds/worker-4/source/Cargo.toml [INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"` [INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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=warn" "-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" "+1.44.0" "build" "--frozen"` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] 3487d19ef41727502351bfde1128f3daf3b9a474e81c257f0ba5da307c85bcbe [INFO] running `"docker" "start" "-a" "3487d19ef41727502351bfde1128f3daf3b9a474e81c257f0ba5da307c85bcbe"` [INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted [INFO] [stderr] Compiling arrayvec v0.4.12 [INFO] [stderr] Compiling nibble v0.1.0 (/opt/rustwide/workdir) [INFO] [stderr] error[E0554]: `#![feature]` may not be used on the stable release channel [INFO] [stderr] --> src/lib.rs:6:1 [INFO] [stderr] | [INFO] [stderr] 6 | #![feature(try_from)] [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] error[E0554]: `#![feature]` may not be used on the stable release channel [INFO] [stderr] --> src/lib.rs:8:1 [INFO] [stderr] | [INFO] [stderr] 8 | #![feature(trace_macros)] [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/common.rs:85:62 [INFO] [stderr] | [INFO] [stderr] 85 | pub(crate) fn get_nib_ref(slice: &[u4x2], nibidx: usize) -> &u4 { [INFO] [stderr] | ^^ help: use `dyn`: `dyn u4` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(bare_trait_objects)]` on by default [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/common.rs:94:66 [INFO] [stderr] | [INFO] [stderr] 94 | pub(crate) fn get_nib_mut(slice: &mut [u4x2], nibidx: usize) -> &U4Cell { [INFO] [stderr] | ^^^^^^ help: use `dyn`: `dyn U4Cell` [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/array.rs:196:50 [INFO] [stderr] | [INFO] [stderr] 196 | impl<'a, A: Array> FromIterator<&'a u4> for NibArrayVec { [INFO] [stderr] | ^^ help: use `dyn`: `dyn u4` [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/array.rs:197:45 [INFO] [stderr] | [INFO] [stderr] 197 | fn from_iter>(iter: I) -> Self { [INFO] [stderr] | ^^ help: use `dyn`: `dyn u4` [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/array.rs:217:44 [INFO] [stderr] | [INFO] [stderr] 217 | impl<'a, A: Array> Extend<&'a u4> for NibArrayVec { [INFO] [stderr] | ^^ help: use `dyn`: `dyn u4` [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/array.rs:218:42 [INFO] [stderr] | [INFO] [stderr] 218 | fn extend>(&mut self, iter: I) { [INFO] [stderr] | ^^ help: use `dyn`: `dyn u4` [INFO] [stderr] [INFO] [stderr] warning: `...` range patterns are deprecated [INFO] [stderr] --> src/base.rs:87:17 [INFO] [stderr] | [INFO] [stderr] 87 | b'0'...b'9' => Some(Self::from_lo(b - b'0')), [INFO] [stderr] | ^^^ help: use `..=` for an inclusive range [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default [INFO] [stderr] [INFO] [stderr] warning: `...` range patterns are deprecated [INFO] [stderr] --> src/base.rs:88:17 [INFO] [stderr] | [INFO] [stderr] 88 | b'A'...b'F' => Some(Self::from_lo(b - b'A' + 0xA)), [INFO] [stderr] | ^^^ help: use `..=` for an inclusive range [INFO] [stderr] [INFO] [stderr] warning: `...` range patterns are deprecated [INFO] [stderr] --> src/base.rs:89:17 [INFO] [stderr] | [INFO] [stderr] 89 | b'a'...b'f' => Some(Self::from_lo(b - b'a' + 0xa)), [INFO] [stderr] | ^^^ help: use `..=` for an inclusive range [INFO] [stderr] [INFO] [stderr] warning: `...` range patterns are deprecated [INFO] [stderr] --> src/base.rs:98:16 [INFO] [stderr] | [INFO] [stderr] 98 | 0x0...0x9 => b'0' + val, [INFO] [stderr] | ^^^ help: use `..=` for an inclusive range [INFO] [stderr] [INFO] [stderr] warning: `...` range patterns are deprecated [INFO] [stderr] --> src/base.rs:99:16 [INFO] [stderr] | [INFO] [stderr] 99 | 0xa...0xf => b'a' + val - 0xa, [INFO] [stderr] | ^^^ help: use `..=` for an inclusive range [INFO] [stderr] [INFO] [stderr] warning: `...` range patterns are deprecated [INFO] [stderr] --> src/base.rs:108:16 [INFO] [stderr] | [INFO] [stderr] 108 | 0x0...0x9 => b'0' + val, [INFO] [stderr] | ^^^ help: use `..=` for an inclusive range [INFO] [stderr] [INFO] [stderr] warning: `...` range patterns are deprecated [INFO] [stderr] --> src/base.rs:109:16 [INFO] [stderr] | [INFO] [stderr] 109 | 0xA...0xF => b'A' + val - 0xA, [INFO] [stderr] | ^^^ help: use `..=` for an inclusive range [INFO] [stderr] [INFO] [stderr] warning: `...` range patterns are deprecated [INFO] [stderr] --> src/base.rs:120:16 [INFO] [stderr] | [INFO] [stderr] 120 | '0'...'9' => Some(Self::from_lo(u32::from(c) as u8 - b'0')), [INFO] [stderr] | ^^^ help: use `..=` for an inclusive range [INFO] [stderr] [INFO] [stderr] warning: `...` range patterns are deprecated [INFO] [stderr] --> src/base.rs:121:16 [INFO] [stderr] | [INFO] [stderr] 121 | 'A'...'F' => Some(Self::from_lo(u32::from(c) as u8 - b'A' + 0xA)), [INFO] [stderr] | ^^^ help: use `..=` for an inclusive range [INFO] [stderr] [INFO] [stderr] warning: `...` range patterns are deprecated [INFO] [stderr] --> src/base.rs:122:16 [INFO] [stderr] | [INFO] [stderr] 122 | 'a'...'f' => Some(Self::from_lo(u32::from(c) as u8 - b'a' + 0xa)), [INFO] [stderr] | ^^^ help: use `..=` for an inclusive range [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/iter.rs:141:21 [INFO] [stderr] | [INFO] [stderr] 141 | type Item = &'a u4; [INFO] [stderr] | ^^ help: use `dyn`: `dyn u4` [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/iter.rs:142:38 [INFO] [stderr] | [INFO] [stderr] 142 | fn next(&mut self) -> Option<&'a u4> { [INFO] [stderr] | ^^ help: use `dyn`: `dyn u4` [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/iter.rs:163:43 [INFO] [stderr] | [INFO] [stderr] 163 | fn next_back(&mut self) -> Option<&'a u4> { [INFO] [stderr] | ^^ help: use `dyn`: `dyn u4` [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/iter.rs:212:21 [INFO] [stderr] | [INFO] [stderr] 212 | type Item = &'a U4Cell; [INFO] [stderr] | ^^^^^^ help: use `dyn`: `dyn U4Cell` [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/iter.rs:213:38 [INFO] [stderr] | [INFO] [stderr] 213 | fn next(&mut self) -> Option<&'a U4Cell> { [INFO] [stderr] | ^^^^^^ help: use `dyn`: `dyn U4Cell` [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/iter.rs:234:43 [INFO] [stderr] | [INFO] [stderr] 234 | fn next_back(&mut self) -> Option<&'a U4Cell> { [INFO] [stderr] | ^^^^^^ help: use `dyn`: `dyn U4Cell` [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/pair.rs:227:20 [INFO] [stderr] | [INFO] [stderr] 227 | hi: Option<&'a u4>, [INFO] [stderr] | ^^ help: use `dyn`: `dyn u4` [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/pair.rs:228:20 [INFO] [stderr] | [INFO] [stderr] 228 | lo: Option<&'a u4>, [INFO] [stderr] | ^^ help: use `dyn`: `dyn u4` [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/pair.rs:231:21 [INFO] [stderr] | [INFO] [stderr] 231 | type Item = &'a u4; [INFO] [stderr] | ^^ help: use `dyn`: `dyn u4` [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/pair.rs:232:38 [INFO] [stderr] | [INFO] [stderr] 232 | fn next(&mut self) -> Option<&'a u4> { [INFO] [stderr] | ^^ help: use `dyn`: `dyn u4` [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/pair.rs:240:43 [INFO] [stderr] | [INFO] [stderr] 240 | fn next_back(&mut self) -> Option<&'a u4> { [INFO] [stderr] | ^^ help: use `dyn`: `dyn u4` [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/pair.rs:253:20 [INFO] [stderr] | [INFO] [stderr] 253 | hi: Option<&'a U4Cell>, [INFO] [stderr] | ^^^^^^ help: use `dyn`: `dyn U4Cell` [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/pair.rs:254:20 [INFO] [stderr] | [INFO] [stderr] 254 | lo: Option<&'a U4Cell>, [INFO] [stderr] | ^^^^^^ help: use `dyn`: `dyn U4Cell` [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/pair.rs:257:21 [INFO] [stderr] | [INFO] [stderr] 257 | type Item = &'a U4Cell; [INFO] [stderr] | ^^^^^^ help: use `dyn`: `dyn U4Cell` [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/pair.rs:258:38 [INFO] [stderr] | [INFO] [stderr] 258 | fn next(&mut self) -> Option<&'a U4Cell> { [INFO] [stderr] | ^^^^^^ help: use `dyn`: `dyn U4Cell` [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/pair.rs:266:43 [INFO] [stderr] | [INFO] [stderr] 266 | fn next_back(&mut self) -> Option<&'a U4Cell> { [INFO] [stderr] | ^^^^^^ help: use `dyn`: `dyn U4Cell` [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/pair.rs:296:26 [INFO] [stderr] | [INFO] [stderr] 296 | fn swap(&self, nib: &U4Cell); [INFO] [stderr] | ^^^^^^ help: use `dyn`: `dyn U4Cell` [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/pair.rs:327:26 [INFO] [stderr] | [INFO] [stderr] 327 | fn swap(&self, nib: &U4Cell) { [INFO] [stderr] | ^^^^^^ help: use `dyn`: `dyn U4Cell` [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/pair.rs:367:26 [INFO] [stderr] | [INFO] [stderr] 367 | fn swap(&self, nib: &U4Cell) { [INFO] [stderr] | ^^^^^^ help: use `dyn`: `dyn U4Cell` [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/slice.rs:66:35 [INFO] [stderr] | [INFO] [stderr] 66 | fn get(&self, idx: usize) -> &u4 { [INFO] [stderr] | ^^ help: use `dyn`: `dyn u4` [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/slice.rs:160:43 [INFO] [stderr] | [INFO] [stderr] 160 | fn get_mut(&mut self, idx: usize) -> &U4Cell { [INFO] [stderr] | ^^^^^^ help: use `dyn`: `dyn U4Cell` [INFO] [stderr] [INFO] [stderr] error: aborting due to 2 previous errors; 37 warnings emitted [INFO] [stderr] [INFO] [stderr] For more information about this error, try `rustc --explain E0554`. [INFO] [stderr] error: could not compile `nibble`. [INFO] [stderr] [INFO] [stderr] To learn more, run the command again with --verbose. [INFO] running `"docker" "inspect" "3487d19ef41727502351bfde1128f3daf3b9a474e81c257f0ba5da307c85bcbe"` [INFO] running `"docker" "rm" "-f" "3487d19ef41727502351bfde1128f3daf3b9a474e81c257f0ba5da307c85bcbe"` [INFO] [stdout] 3487d19ef41727502351bfde1128f3daf3b9a474e81c257f0ba5da307c85bcbe