[INFO] fetching crate null-vec 0.1.0...
[INFO] testing null-vec-0.1.0 against 1.55.0 for beta-1.56-1
[INFO] extracting crate null-vec 0.1.0 into /workspace/builds/worker-83/source
[INFO] validating manifest of crates.io crate null-vec 0.1.0 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate null-vec 0.1.0
[INFO] finished tweaking crates.io crate null-vec 0.1.0
[INFO] tweaked toml for crates.io crate null-vec 0.1.0 written to /workspace/builds/worker-83/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-83/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-83/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 341d24d888139065a523feee792013d5427d2a786dce1832dbbc234e87ee45e7
[INFO] running `Command { std: "docker" "start" "-a" "341d24d888139065a523feee792013d5427d2a786dce1832dbbc234e87ee45e7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "341d24d888139065a523feee792013d5427d2a786dce1832dbbc234e87ee45e7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "341d24d888139065a523feee792013d5427d2a786dce1832dbbc234e87ee45e7", kill_on_drop: false }`
[INFO] [stdout] 341d24d888139065a523feee792013d5427d2a786dce1832dbbc234e87ee45e7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-83/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-83/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 188f26f6ac5508091f69abb1be27cca42c72b91da08da1a93785a45a9c29de22
[INFO] running `Command { std: "docker" "start" "-a" "188f26f6ac5508091f69abb1be27cca42c72b91da08da1a93785a45a9c29de22", 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 null-vec v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]  --> src/lib.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(const_fn)]
[INFO] [stdout]   |            ^^^^^^^^ feature has been removed
[INFO] [stdout]   |
[INFO] [stdout]   = note: split into finer-grained feature gates
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(alloc)]
[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:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(const_fn)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'raw_vec_internals': implementation detail
[INFO] [stdout]  --> src/lib.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use alloc::raw_vec::RawVec;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'raw_vec_internals': implementation detail
[INFO] [stdout]   --> src/lib.rs:45:10
[INFO] [stdout]    |
[INFO] [stdout] 45 |     raw: RawVec<T>,
[INFO] [stdout]    |          ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'raw_vec_internals': implementation detail
[INFO] [stdout]   --> src/lib.rs:50:24
[INFO] [stdout]    |
[INFO] [stdout] 50 |         NullVec { raw: RawVec::new() }
[INFO] [stdout]    |                        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'raw_vec_internals': implementation detail
[INFO] [stdout]   --> src/lib.rs:54:38
[INFO] [stdout]    |
[INFO] [stdout] 54 |         let mut vec = NullVec { raw: RawVec::with_capacity(cap) };
[INFO] [stdout]    |                                      ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'raw_vec_internals': implementation detail
[INFO] [stdout]   --> src/lib.rs:50:24
[INFO] [stdout]    |
[INFO] [stdout] 50 |         NullVec { raw: RawVec::new() }
[INFO] [stdout]    |                        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'raw_vec_internals': implementation detail
[INFO] [stdout]   --> src/lib.rs:54:38
[INFO] [stdout]    |
[INFO] [stdout] 54 |         let mut vec = NullVec { raw: RawVec::with_capacity(cap) };
[INFO] [stdout]    |                                      ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `cap` found for struct `RawVec` in the current scope
[INFO] [stdout]   --> src/lib.rs:55:29
[INFO] [stdout]    |
[INFO] [stdout] 55 |         for i in 0..vec.raw.cap() {
[INFO] [stdout]    |                             ^^^ private field, not a method
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `cap` found for struct `RawVec` in the current scope
[INFO] [stdout]   --> src/lib.rs:65:28
[INFO] [stdout]    |
[INFO] [stdout] 65 |         let cap = self.raw.cap();
[INFO] [stdout]    |                            ^^^ private field, not a method
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'raw_vec_internals': implementation detail
[INFO] [stdout]   --> src/lib.rs:67:22
[INFO] [stdout]    |
[INFO] [stdout] 67 |             self.raw.reserve(cap, idx - cap + 1);
[INFO] [stdout]    |                      ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `cap` found for struct `RawVec` in the current scope
[INFO] [stdout]   --> src/lib.rs:68:36
[INFO] [stdout]    |
[INFO] [stdout] 68 |             for i in cap..self.raw.cap() {
[INFO] [stdout]    |                                    ^^^ private field, not a method
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `cap` found for struct `RawVec` in the current scope
[INFO] [stdout]   --> src/lib.rs:80:27
[INFO] [stdout]    |
[INFO] [stdout] 80 |         if idx < self.raw.cap() {
[INFO] [stdout]    |                           ^^^ private field, not a method
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `cap` found for struct `RawVec` in the current scope
[INFO] [stdout]   --> src/lib.rs:89:27
[INFO] [stdout]    |
[INFO] [stdout] 89 |         if idx < self.raw.cap() {
[INFO] [stdout]    |                           ^^^ private field, not a method
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `cap` found for struct `RawVec` in the current scope
[INFO] [stdout]   --> src/lib.rs:99:34
[INFO] [stdout]    |
[INFO] [stdout] 99 |         for i in start..self.raw.cap() {
[INFO] [stdout]    |                                  ^^^ private field, not a method
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `cap` found for struct `RawVec` in the current scope
[INFO] [stdout]    --> src/lib.rs:106:25
[INFO] [stdout]     |
[INFO] [stdout] 106 |         return self.raw.cap()
[INFO] [stdout]     |                         ^^^ private field, not a method
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'raw_vec_internals': implementation detail
[INFO] [stdout]    --> src/lib.rs:110:20
[INFO] [stdout]     |
[INFO] [stdout] 110 |         &*self.raw.ptr().offset(idx as isize)
[INFO] [stdout]     |                    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'raw_vec_internals': implementation detail
[INFO] [stdout]    --> src/lib.rs:114:24
[INFO] [stdout]     |
[INFO] [stdout] 114 |         &mut *self.raw.ptr().offset(idx as isize)
[INFO] [stdout]     |                        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 19 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0554, E0557, E0599, E0658.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `null-vec` due to 20 previous errors
[INFO] running `Command { std: "docker" "inspect" "188f26f6ac5508091f69abb1be27cca42c72b91da08da1a93785a45a9c29de22", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "188f26f6ac5508091f69abb1be27cca42c72b91da08da1a93785a45a9c29de22", kill_on_drop: false }`
[INFO] [stdout] 188f26f6ac5508091f69abb1be27cca42c72b91da08da1a93785a45a9c29de22