[INFO] updating cached repository https://github.com/faineance/vpu
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/big/crater/work/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] f4cab040ea9da517d70ad1d8d9e395700d3de580
[INFO] testing faineance/vpu against 1.38.0 for beta-1.39-1
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffaineance%2Fvpu" "work/builds/worker-1/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/faineance/vpu on toolchain 1.38.0
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/faineance/vpu
[INFO] finished tweaking git repo https://github.com/faineance/vpu
[INFO] tweaked toml for git repo https://github.com/faineance/vpu written to work/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/faineance/vpu already has a lockfile, it will not be regenerated
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] error: the lock file /big/crater/work/builds/worker-1/source/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] the lockfile is outdated, regenerating it
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-1/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-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" "+1.38.0" "build" "--frozen"`
[INFO] [stdout] 99ce6d92bdb92fd8d649104f1d94e000c84973267929ba0c05cf8210fc690c87
[INFO] running `"docker" "start" "-a" "99ce6d92bdb92fd8d649104f1d94e000c84973267929ba0c05cf8210fc690c87"`
[INFO] [stderr]    Compiling vpu 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:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(libc, asm, convert)] 
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused macro definition
[INFO] [stderr]   --> src/runtime/jit/function.rs:34:1
[INFO] [stderr]    |
[INFO] [stderr] 34 | / macro_rules! compilefn(
[INFO] [stderr] 35 | |    ($fun:ident, ($($types:ty),+) -> $rettype:ty) => ({
[INFO] [stderr] 36 | |       type FnType = extern "C" fn($($types),+) -> $rettype;
[INFO] [stderr] 37 | |       let code = $fun.code;
[INFO] [stderr] 38 | |       unsafe { mem::transmute::<*mut u8, FnType>(code) }
[INFO] [stderr] 39 | |    })
[INFO] [stderr] 40 | | );
[INFO] [stderr]    | |__^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_macros)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::str`
[INFO] [stderr]  --> src/runtime/cpuid/cpuid.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::str;
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::slice`
[INFO] [stderr]  --> src/runtime/cpuid/cpuid.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::slice;
[INFO] [stderr]   |     ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::mem`
[INFO] [stderr]  --> src/runtime/cpuid/cpuid.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::mem;
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `LittleEndian`, `WriteBytesExt`
[INFO] [stderr]  --> src/runtime/cpuid/cpuid.rs:5:17
[INFO] [stderr]   |
[INFO] [stderr] 5 | use byteorder::{LittleEndian, WriteBytesExt};
[INFO] [stderr]   |                 ^^^^^^^^^^^^  ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::slice`
[INFO] [stderr]  --> src/runtime/cpuid/mod.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::slice;
[INFO] [stderr]   |     ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::mem`
[INFO] [stderr]  --> src/runtime/cpuid/mod.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::mem;
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: use of unstable library feature 'rustc_private': this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via `Cargo.toml` instead?
[INFO] [stderr]  --> src/runtime/jit/function.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | extern crate libc;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: for more information, see https://github.com/rust-lang/rust/issues/27812
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: use of unstable library feature 'rustc_private': this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via `Cargo.toml` instead?
[INFO] [stderr]   --> src/runtime/jit/function.rs:11:20
[INFO] [stderr]    |
[INFO] [stderr] 11 |         let prot = libc::PROT_READ | libc::PROT_WRITE;
[INFO] [stderr]    |                    ^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: for more information, see https://github.com/rust-lang/rust/issues/27812
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: use of unstable library feature 'rustc_private': this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via `Cargo.toml` instead?
[INFO] [stderr]   --> src/runtime/jit/function.rs:11:38
[INFO] [stderr]    |
[INFO] [stderr] 11 |         let prot = libc::PROT_READ | libc::PROT_WRITE;
[INFO] [stderr]    |                                      ^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: for more information, see https://github.com/rust-lang/rust/issues/27812
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: use of unstable library feature 'rustc_private': this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via `Cargo.toml` instead?
[INFO] [stderr]   --> src/runtime/jit/function.rs:12:21
[INFO] [stderr]    |
[INFO] [stderr] 12 |         let flags = libc::MAP_ANONYMOUS | libc::MAP_PRIVATE;
[INFO] [stderr]    |                     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: for more information, see https://github.com/rust-lang/rust/issues/27812
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: use of unstable library feature 'rustc_private': this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via `Cargo.toml` instead?
[INFO] [stderr]   --> src/runtime/jit/function.rs:12:43
[INFO] [stderr]    |
[INFO] [stderr] 12 |         let flags = libc::MAP_ANONYMOUS | libc::MAP_PRIVATE;
[INFO] [stderr]    |                                           ^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: for more information, see https://github.com/rust-lang/rust/issues/27812
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: use of unstable library feature 'rustc_private': this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via `Cargo.toml` instead?
[INFO] [stderr]   --> src/runtime/jit/function.rs:16:25
[INFO] [stderr]    |
[INFO] [stderr] 16 |             let _code = libc::mmap(0 as *mut libc::c_void, size, prot,flags, -1, 0);
[INFO] [stderr]    |                         ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: for more information, see https://github.com/rust-lang/rust/issues/27812
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: use of unstable library feature 'rustc_private': this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via `Cargo.toml` instead?
[INFO] [stderr]   --> src/runtime/jit/function.rs:19:21
[INFO] [stderr]    |
[INFO] [stderr] 19 |             assert!(libc::mprotect(code as *mut libc::c_void, size, libc::PROT_READ | libc::PROT_EXEC) == 0);
[INFO] [stderr]    |                     ^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: for more information, see https://github.com/rust-lang/rust/issues/27812
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: use of unstable library feature 'rustc_private': this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via `Cargo.toml` instead?
[INFO] [stderr]   --> src/runtime/jit/function.rs:19:69
[INFO] [stderr]    |
[INFO] [stderr] 19 |             assert!(libc::mprotect(code as *mut libc::c_void, size, libc::PROT_READ | libc::PROT_EXEC) == 0);
[INFO] [stderr]    |                                                                     ^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: for more information, see https://github.com/rust-lang/rust/issues/27812
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: use of unstable library feature 'rustc_private': this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via `Cargo.toml` instead?
[INFO] [stderr]   --> src/runtime/jit/function.rs:19:87
[INFO] [stderr]    |
[INFO] [stderr] 19 |             assert!(libc::mprotect(code as *mut libc::c_void, size, libc::PROT_READ | libc::PROT_EXEC) == 0);
[INFO] [stderr]    |                                                                                       ^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: for more information, see https://github.com/rust-lang/rust/issues/27812
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: use of unstable library feature 'rustc_private': this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via `Cargo.toml` instead?
[INFO] [stderr]   --> src/runtime/jit/function.rs:28:21
[INFO] [stderr]    |
[INFO] [stderr] 28 |             assert!(libc::munmap(self.code as *mut libc::c_void, self.size) == 0);
[INFO] [stderr]    |                     ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: for more information, see https://github.com/rust-lang/rust/issues/27812
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 11 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0554, E0658.
[INFO] [stderr] For more information about an error, try `rustc --explain E0554`.
[INFO] [stderr] error: Could not compile `vpu`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "99ce6d92bdb92fd8d649104f1d94e000c84973267929ba0c05cf8210fc690c87"`
[INFO] running `"docker" "rm" "-f" "99ce6d92bdb92fd8d649104f1d94e000c84973267929ba0c05cf8210fc690c87"`
[INFO] [stdout] 99ce6d92bdb92fd8d649104f1d94e000c84973267929ba0c05cf8210fc690c87