[INFO] fetching crate null-terminated 0.3.17...
[INFO] testing null-terminated-0.3.17 against master#562dee4820c458d823175268e41601d4c060588a for pr-154210-2
[INFO] extracting crate null-terminated 0.3.17 into /workspace/builds/worker-2-tc1/source
[INFO] started tweaking crates.io crate null-terminated 0.3.17
[INFO] finished tweaking crates.io crate null-terminated 0.3.17
[INFO] tweaked toml for crates.io crate null-terminated 0.3.17 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate null-terminated 0.3.17 on toolchain 562dee4820c458d823175268e41601d4c060588a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate null-terminated 0.3.17 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: `package.edition` is unspecified, defaulting to `2015` while the latest is `2024`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rand_core v0.4.2
[INFO] [stderr]   Downloaded rand_core v0.3.0
[INFO] [stderr]   Downloaded rand_xorshift v0.1.1
[INFO] [stderr]   Downloaded quickcheck v0.8.5
[INFO] [stderr]   Downloaded quickcheck_macros v0.8.0
[INFO] [stderr]   Downloaded fuchsia-cprng v0.1.1
[INFO] [stderr]   Downloaded system-call v0.1.1
[INFO] [stderr]   Downloaded thread_local v1.0.1
[INFO] [stderr]   Downloaded byte-strings-proc_macros v0.2.1
[INFO] [stderr]   Downloaded cfg-if v0.1.4
[INFO] [stderr]   Downloaded rand_pcg v0.1.2
[INFO] [stderr]   Downloaded rand_jitter v0.1.4
[INFO] [stderr]   Downloaded rand_os v0.1.3
[INFO] [stderr]   Downloaded rand v0.6.5
[INFO] [stderr]   Downloaded lazy_static v1.0.2
[INFO] [stderr]   Downloaded env_logger v0.6.2
[INFO] [stderr]   Downloaded log v0.4.3
[INFO] [stderr]   Downloaded rand_chacha v0.1.1
[INFO] [stderr]   Downloaded rand_hc v0.1.0
[INFO] [stderr]   Downloaded regex v1.3.9
[INFO] [stderr]   Downloaded rand_isaac v0.1.1
[INFO] [stderr]   Downloaded aho-corasick v0.7.13
[INFO] [stderr]   Downloaded rdrand v0.4.0
[INFO] [stderr]   Downloaded autocfg v0.1.7
[INFO] [stderr]   Downloaded bitflags v1.0.3
[INFO] [stderr]   Downloaded syn v1.0.36
[INFO] [stderr]   Downloaded libc v0.2.42
[INFO] [stderr]   Downloaded utf v0.1.0
[INFO] [stderr]   Downloaded regex-syntax v0.6.18
[INFO] [stderr]   Downloaded winapi v0.3.5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 381846697d10ac1a4b23ed4d167db8622f1c18af214308ed42fb91a824193815
[INFO] running `Command { std: "docker" "start" "-a" "381846697d10ac1a4b23ed4d167db8622f1c18af214308ed42fb91a824193815", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "381846697d10ac1a4b23ed4d167db8622f1c18af214308ed42fb91a824193815", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "381846697d10ac1a4b23ed4d167db8622f1c18af214308ed42fb91a824193815", kill_on_drop: false }`
[INFO] [stdout] 381846697d10ac1a4b23ed4d167db8622f1c18af214308ed42fb91a824193815
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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" "RUSTDOCFLAGS=--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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d85e7401e676d3669e277197304879d9c236b3c32eb60a90a998ae3cfe33b485
[INFO] running `Command { std: "docker" "start" "-a" "d85e7401e676d3669e277197304879d9c236b3c32eb60a90a998ae3cfe33b485", kill_on_drop: false }`
[INFO] [stderr] warning: `package.edition` is unspecified, defaulting to `2015` while the latest is `2024`
[INFO] [stderr]    Compiling proc-macro2 v1.0.19
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.36
[INFO] [stderr]    Compiling utf v0.1.0
[INFO] [stderr]    Compiling unreachable v1.0.0
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]    Compiling byte-strings-proc_macros v0.2.1
[INFO] [stderr]    Compiling null-terminated v0.3.17 (/opt/rustwide/workdir)
[INFO] [stdout] warning: `extern` declarations without an explicit ABI are deprecated
[INFO] [stdout]   --> src/lib.rs:44:1
[INFO] [stdout]    |
[INFO] [stdout] 44 | extern { type Opaque; }
[INFO] [stdout]    | ^^^^^^ help: explicitly specify the "C" ABI: `extern "C"`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(missing_abi)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `const_raw_ptr_deref` has been stable since 1.58.0 and no longer requires an attribute to enable
[INFO] [stdout]   --> src/lib.rs:25:12
[INFO] [stdout]    |
[INFO] [stdout] 25 | #![feature(const_raw_ptr_deref)]
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the size for values of type `Opaque` cannot be known
[INFO] [stdout]    --> src/lib.rs:163:5
[INFO] [stdout]     |
[INFO] [stdout] 163 |     fn index(&self, i: I) -> &Self::Output {
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ doesn't have a known size
[INFO] [stdout]     |
[INFO] [stdout]     = help: within `Nul<A>`, the nightly-only, unstable trait `MetaSized` is not implemented for `Opaque`
[INFO] [stdout] note: required because it appears within the type `Nul<A>`
[INFO] [stdout]    --> src/lib.rs:67:12
[INFO] [stdout]     |
[INFO] [stdout]  67 | pub struct Nul<A>([A; 0], Opaque);
[INFO] [stdout]     |            ^^^
[INFO] [stdout] note: required by a bound in `core::ops::Index`
[INFO] [stdout]    --> /rustc/562dee4820c458d823175268e41601d4c060588a/library/core/src/ops/index.rs:59:0
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the size for values of type `Opaque` cannot be known
[INFO] [stdout]    --> src/lib.rs:160:25
[INFO] [stdout]     |
[INFO] [stdout] 160 | impl<A, I> Index<I> for Nul<A> where [A]: Index<I> {
[INFO] [stdout]     |                         ^^^^^^ doesn't have a known size
[INFO] [stdout]     |
[INFO] [stdout]     = help: within `Nul<A>`, the nightly-only, unstable trait `MetaSized` is not implemented for `Opaque`
[INFO] [stdout] note: required because it appears within the type `Nul<A>`
[INFO] [stdout]    --> src/lib.rs:67:12
[INFO] [stdout]     |
[INFO] [stdout]  67 | pub struct Nul<A>([A; 0], Opaque);
[INFO] [stdout]     |            ^^^
[INFO] [stdout] note: required by a bound in `core::ops::Index`
[INFO] [stdout]    --> /rustc/562dee4820c458d823175268e41601d4c060588a/library/core/src/ops/index.rs:59:0
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the size for values of type `Opaque` cannot be known
[INFO] [stdout]    --> src/lib.rs:170:5
[INFO] [stdout]     |
[INFO] [stdout] 170 |     fn index_mut(&mut self, i: I) -> &mut Self::Output {
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ doesn't have a known size
[INFO] [stdout]     |
[INFO] [stdout]     = help: within `Nul<A>`, the nightly-only, unstable trait `MetaSized` is not implemented for `Opaque`
[INFO] [stdout] note: required because it appears within the type `Nul<A>`
[INFO] [stdout]    --> src/lib.rs:67:12
[INFO] [stdout]     |
[INFO] [stdout]  67 | pub struct Nul<A>([A; 0], Opaque);
[INFO] [stdout]     |            ^^^
[INFO] [stdout] note: required by a bound in `core::ops::Index`
[INFO] [stdout]    --> /rustc/562dee4820c458d823175268e41601d4c060588a/library/core/src/ops/index.rs:59:0
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the size for values of type `Opaque` cannot be known
[INFO] [stdout]    --> src/lib.rs:168:28
[INFO] [stdout]     |
[INFO] [stdout] 168 | impl<A, I> IndexMut<I> for Nul<A> where [A]: IndexMut<I> {
[INFO] [stdout]     |                            ^^^^^^ doesn't have a known size
[INFO] [stdout]     |
[INFO] [stdout]     = help: within `Nul<A>`, the nightly-only, unstable trait `MetaSized` is not implemented for `Opaque`
[INFO] [stdout] note: required because it appears within the type `Nul<A>`
[INFO] [stdout]    --> src/lib.rs:67:12
[INFO] [stdout]     |
[INFO] [stdout]  67 | pub struct Nul<A>([A; 0], Opaque);
[INFO] [stdout]     |            ^^^
[INFO] [stdout] note: required by a bound in `core::ops::IndexMut`
[INFO] [stdout]    --> /rustc/562dee4820c458d823175268e41601d4c060588a/library/core/src/ops/index.rs:170:0
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the size for values of type `Opaque` cannot be known
[INFO] [stdout]    --> src/lib.rs:303:12
[INFO] [stdout]     |
[INFO] [stdout] 301 | #[derive(PartialEq, Eq, PartialOrd, Ord, Hash)]
[INFO] [stdout]     |          --------- in this derive macro expansion
[INFO] [stdout] 302 | #[repr(transparent)]
[INFO] [stdout] 303 | pub struct NulStr(Nul<u8>);
[INFO] [stdout]     |            ^^^^^^ doesn't have a known size
[INFO] [stdout]     |
[INFO] [stdout]     = help: within `NulStr`, the nightly-only, unstable trait `MetaSized` is not implemented for `Opaque`
[INFO] [stdout] note: required because it appears within the type `NulStr`
[INFO] [stdout]    --> src/lib.rs:303:12
[INFO] [stdout]     |
[INFO] [stdout] 303 | pub struct NulStr(Nul<u8>);
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout] note: required by a bound in `StructuralPartialEq`
[INFO] [stdout]    --> /rustc/562dee4820c458d823175268e41601d4c060588a/library/core/src/marker.rs:257:0
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the size for values of type `Opaque` cannot be known
[INFO] [stdout]    --> src/lib.rs:316:27
[INFO] [stdout]     |
[INFO] [stdout] 316 | impl Index<RangeFull> for NulStr {
[INFO] [stdout]     |                           ^^^^^^ doesn't have a known size
[INFO] [stdout]     |
[INFO] [stdout]     = help: within `NulStr`, the nightly-only, unstable trait `MetaSized` is not implemented for `Opaque`
[INFO] [stdout] note: required because it appears within the type `NulStr`
[INFO] [stdout]    --> src/lib.rs:303:12
[INFO] [stdout]     |
[INFO] [stdout] 303 | pub struct NulStr(Nul<u8>);
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout] note: required by a bound in `core::ops::Index`
[INFO] [stdout]    --> /rustc/562dee4820c458d823175268e41601d4c060588a/library/core/src/ops/index.rs:59:0
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the size for values of type `Opaque` cannot be known
[INFO] [stdout]    --> src/lib.rs:325:30
[INFO] [stdout]     |
[INFO] [stdout] 325 | impl IndexMut<RangeFull> for NulStr {
[INFO] [stdout]     |                              ^^^^^^ doesn't have a known size
[INFO] [stdout]     |
[INFO] [stdout]     = help: within `NulStr`, the nightly-only, unstable trait `MetaSized` is not implemented for `Opaque`
[INFO] [stdout] note: required because it appears within the type `NulStr`
[INFO] [stdout]    --> src/lib.rs:303:12
[INFO] [stdout]     |
[INFO] [stdout] 303 | pub struct NulStr(Nul<u8>);
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout] note: required by a bound in `core::ops::IndexMut`
[INFO] [stdout]    --> /rustc/562dee4820c458d823175268e41601d4c060588a/library/core/src/ops/index.rs:170:0
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the size for values of type `Opaque` cannot be known
[INFO] [stdout]    --> src/lib.rs:113:49
[INFO] [stdout]     |
[INFO] [stdout] 113 |     pub fn get(&self, i: usize) -> Option<&A> { self[..].get(i) }
[INFO] [stdout]     |                                                 ^^^^^^^^ doesn't have a known size
[INFO] [stdout]     |
[INFO] [stdout]     = help: within `Nul<A>`, the nightly-only, unstable trait `MetaSized` is not implemented for `Opaque`
[INFO] [stdout] note: required because it appears within the type `Nul<A>`
[INFO] [stdout]    --> src/lib.rs:67:12
[INFO] [stdout]     |
[INFO] [stdout]  67 | pub struct Nul<A>([A; 0], Opaque);
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the size for values of type `Opaque` cannot be known
[INFO] [stdout]    --> src/lib.rs:117:61
[INFO] [stdout]     |
[INFO] [stdout] 117 |     pub fn get_mut(&mut self, i: usize) -> Option<&mut A> { self[..].get_mut(i) }
[INFO] [stdout]     |                                                             ^^^^^^^^ doesn't have a known size
[INFO] [stdout]     |
[INFO] [stdout]     = help: within `Nul<A>`, the nightly-only, unstable trait `MetaSized` is not implemented for `Opaque`
[INFO] [stdout] note: required because it appears within the type `Nul<A>`
[INFO] [stdout]    --> src/lib.rs:67:12
[INFO] [stdout]     |
[INFO] [stdout]  67 | pub struct Nul<A>([A; 0], Opaque);
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the size for values of type `Opaque` cannot be known
[INFO] [stdout]    --> src/lib.rs:177:60
[INFO] [stdout]     |
[INFO] [stdout] 177 |     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { self[..].fmt(f) }
[INFO] [stdout]     |                                                            ^^^^^^^^ doesn't have a known size
[INFO] [stdout]     |
[INFO] [stdout]     = help: within `Nul<A>`, the nightly-only, unstable trait `MetaSized` is not implemented for `Opaque`
[INFO] [stdout] note: required because it appears within the type `Nul<A>`
[INFO] [stdout]    --> src/lib.rs:67:12
[INFO] [stdout]     |
[INFO] [stdout]  67 | pub struct Nul<A>([A; 0], Opaque);
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the size for values of type `Opaque` cannot be known
[INFO] [stdout]    --> src/lib.rs:182:42
[INFO] [stdout]     |
[INFO] [stdout] 182 |     fn eq(&self, other: &Self) -> bool { self[..] == other[..] }
[INFO] [stdout]     |                                          ^^^^^^^^ doesn't have a known size
[INFO] [stdout]     |
[INFO] [stdout]     = help: within `Nul<A>`, the nightly-only, unstable trait `MetaSized` is not implemented for `Opaque`
[INFO] [stdout] note: required because it appears within the type `Nul<A>`
[INFO] [stdout]    --> src/lib.rs:67:12
[INFO] [stdout]     |
[INFO] [stdout]  67 | pub struct Nul<A>([A; 0], Opaque);
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the size for values of type `Opaque` cannot be known
[INFO] [stdout]    --> src/lib.rs:182:54
[INFO] [stdout]     |
[INFO] [stdout] 182 |     fn eq(&self, other: &Self) -> bool { self[..] == other[..] }
[INFO] [stdout]     |                                                      ^^^^^^^^^ doesn't have a known size
[INFO] [stdout]     |
[INFO] [stdout]     = help: within `Nul<A>`, the nightly-only, unstable trait `MetaSized` is not implemented for `Opaque`
[INFO] [stdout] note: required because it appears within the type `Nul<A>`
[INFO] [stdout]    --> src/lib.rs:67:12
[INFO] [stdout]     |
[INFO] [stdout]  67 | pub struct Nul<A>([A; 0], Opaque);
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the size for values of type `Opaque` cannot be known
[INFO] [stdout]    --> src/lib.rs:190:29
[INFO] [stdout]     |
[INFO] [stdout] 190 |         <[A]>::partial_cmp(&self[..], &other[..])
[INFO] [stdout]     |                             ^^^^^^^^ doesn't have a known size
[INFO] [stdout]     |
[INFO] [stdout]     = help: within `Nul<A>`, the nightly-only, unstable trait `MetaSized` is not implemented for `Opaque`
[INFO] [stdout] note: required because it appears within the type `Nul<A>`
[INFO] [stdout]    --> src/lib.rs:67:12
[INFO] [stdout]     |
[INFO] [stdout]  67 | pub struct Nul<A>([A; 0], Opaque);
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the size for values of type `Opaque` cannot be known
[INFO] [stdout]    --> src/lib.rs:190:40
[INFO] [stdout]     |
[INFO] [stdout] 190 |         <[A]>::partial_cmp(&self[..], &other[..])
[INFO] [stdout]     |                                        ^^^^^^^^^ doesn't have a known size
[INFO] [stdout]     |
[INFO] [stdout]     = help: within `Nul<A>`, the nightly-only, unstable trait `MetaSized` is not implemented for `Opaque`
[INFO] [stdout] note: required because it appears within the type `Nul<A>`
[INFO] [stdout]    --> src/lib.rs:67:12
[INFO] [stdout]     |
[INFO] [stdout]  67 | pub struct Nul<A>([A; 0], Opaque);
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the size for values of type `Opaque` cannot be known
[INFO] [stdout]    --> src/lib.rs:196:59
[INFO] [stdout]     |
[INFO] [stdout] 196 |     fn cmp(&self, other: &Self) -> Ordering { <[A]>::cmp(&self[..], &other[..]) }
[INFO] [stdout]     |                                                           ^^^^^^^^ doesn't have a known size
[INFO] [stdout]     |
[INFO] [stdout]     = help: within `Nul<A>`, the nightly-only, unstable trait `MetaSized` is not implemented for `Opaque`
[INFO] [stdout] note: required because it appears within the type `Nul<A>`
[INFO] [stdout]    --> src/lib.rs:67:12
[INFO] [stdout]     |
[INFO] [stdout]  67 | pub struct Nul<A>([A; 0], Opaque);
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the size for values of type `Opaque` cannot be known
[INFO] [stdout]    --> src/lib.rs:196:70
[INFO] [stdout]     |
[INFO] [stdout] 196 |     fn cmp(&self, other: &Self) -> Ordering { <[A]>::cmp(&self[..], &other[..]) }
[INFO] [stdout]     |                                                                      ^^^^^^^^^ doesn't have a known size
[INFO] [stdout]     |
[INFO] [stdout]     = help: within `Nul<A>`, the nightly-only, unstable trait `MetaSized` is not implemented for `Opaque`
[INFO] [stdout] note: required because it appears within the type `Nul<A>`
[INFO] [stdout]    --> src/lib.rs:67:12
[INFO] [stdout]     |
[INFO] [stdout]  67 | pub struct Nul<A>([A; 0], Opaque);
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the size for values of type `Opaque` cannot be known
[INFO] [stdout]    --> src/lib.rs:307:83
[INFO] [stdout]     |
[INFO] [stdout] 307 |     fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result { write!(fmt, "{:?}", &self[..]) }
[INFO] [stdout]     |                                                                                   ^^^^^^^^ doesn't have a known size
[INFO] [stdout]     |
[INFO] [stdout]     = help: within `NulStr`, the nightly-only, unstable trait `MetaSized` is not implemented for `Opaque`
[INFO] [stdout] note: required because it appears within the type `NulStr`
[INFO] [stdout]    --> src/lib.rs:303:12
[INFO] [stdout]     |
[INFO] [stdout] 303 | pub struct NulStr(Nul<u8>);
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the size for values of type `Opaque` cannot be known
[INFO] [stdout]    --> src/lib.rs:313:77
[INFO] [stdout]     |
[INFO] [stdout] 313 |     fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result { fmt.write_str(&self[..]) }
[INFO] [stdout]     |                                                                             ^^^^^^^^ doesn't have a known size
[INFO] [stdout]     |
[INFO] [stdout]     = help: within `NulStr`, the nightly-only, unstable trait `MetaSized` is not implemented for `Opaque`
[INFO] [stdout] note: required because it appears within the type `NulStr`
[INFO] [stdout]    --> src/lib.rs:303:12
[INFO] [stdout]     |
[INFO] [stdout] 303 | pub struct NulStr(Nul<u8>);
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the size for values of type `Opaque` cannot be known
[INFO] [stdout]    --> src/lib.rs:321:43
[INFO] [stdout]     |
[INFO] [stdout] 321 |         ::core::str::from_utf8_unchecked(&self.0[..])
[INFO] [stdout]     |                                           ^^^^^^^^^^ doesn't have a known size
[INFO] [stdout]     |
[INFO] [stdout]     = help: within `Nul<u8>`, the nightly-only, unstable trait `MetaSized` is not implemented for `Opaque`
[INFO] [stdout] note: required because it appears within the type `Nul<u8>`
[INFO] [stdout]    --> src/lib.rs:67:12
[INFO] [stdout]     |
[INFO] [stdout]  67 | pub struct Nul<A>([A; 0], Opaque);
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the size for values of type `Opaque` cannot be known
[INFO] [stdout]    --> src/lib.rs:328:51
[INFO] [stdout]     |
[INFO] [stdout] 328 |         ::core::str::from_utf8_unchecked_mut(&mut self.0[..])
[INFO] [stdout]     |                                                   ^^^^^^^^^^ doesn't have a known size
[INFO] [stdout]     |
[INFO] [stdout]     = help: within `Nul<u8>`, the nightly-only, unstable trait `MetaSized` is not implemented for `Opaque`
[INFO] [stdout] note: required because it appears within the type `Nul<u8>`
[INFO] [stdout]    --> src/lib.rs:67:12
[INFO] [stdout]     |
[INFO] [stdout]  67 | pub struct Nul<A>([A; 0], Opaque);
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the size for values of type `Opaque` cannot be known
[INFO] [stdout]    --> src/lib.rs:377:56
[INFO] [stdout]     |
[INFO] [stdout] 377 |     pub fn is_char_boundary(&self, k: usize) -> bool { self[..].is_char_boundary(k) }
[INFO] [stdout]     |                                                        ^^^^^^^^ doesn't have a known size
[INFO] [stdout]     |
[INFO] [stdout]     = help: within `NulStr`, the nightly-only, unstable trait `MetaSized` is not implemented for `Opaque`
[INFO] [stdout] note: required because it appears within the type `NulStr`
[INFO] [stdout]    --> src/lib.rs:303:12
[INFO] [stdout]     |
[INFO] [stdout] 303 | pub struct NulStr(Nul<u8>);
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the size for values of type `Opaque` cannot be known
[INFO] [stdout]    --> src/lib.rs:417:33
[INFO] [stdout]     |
[INFO] [stdout] 417 |         ::core::str::from_utf8(&s[..])?;
[INFO] [stdout]     |                                 ^^^^^ doesn't have a known size
[INFO] [stdout]     |
[INFO] [stdout]     = help: within `Nul<u8>`, the nightly-only, unstable trait `MetaSized` is not implemented for `Opaque`
[INFO] [stdout] note: required because it appears within the type `Nul<u8>`
[INFO] [stdout]    --> src/lib.rs:67:12
[INFO] [stdout]     |
[INFO] [stdout]  67 | pub struct Nul<A>([A; 0], Opaque);
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the size for values of type `Opaque` cannot be known
[INFO] [stdout]    --> src/lib.rs:427:41
[INFO] [stdout]     |
[INFO] [stdout] 427 |         ::core::str::from_utf8_mut(&mut s[..])?;
[INFO] [stdout]     |                                         ^^^^^ doesn't have a known size
[INFO] [stdout]     |
[INFO] [stdout]     = help: within `Nul<u8>`, the nightly-only, unstable trait `MetaSized` is not implemented for `Opaque`
[INFO] [stdout] note: required because it appears within the type `Nul<u8>`
[INFO] [stdout]    --> src/lib.rs:67:12
[INFO] [stdout]     |
[INFO] [stdout]  67 | pub struct Nul<A>([A; 0], Opaque);
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `null-terminated` (lib) due to 23 previous errors; 2 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "d85e7401e676d3669e277197304879d9c236b3c32eb60a90a998ae3cfe33b485", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d85e7401e676d3669e277197304879d9c236b3c32eb60a90a998ae3cfe33b485", kill_on_drop: false }`
[INFO] [stdout] d85e7401e676d3669e277197304879d9c236b3c32eb60a90a998ae3cfe33b485