[INFO] updating cached repository jgillich/blockforge-rust
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/jgillich/blockforge-rust
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/jgillich/blockforge-rust" "work/ex/beta-1.38-1/sources/1.37.0/gh/jgillich/blockforge-rust"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/jgillich/blockforge-rust'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/jgillich/blockforge-rust" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/jgillich/blockforge-rust"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/jgillich/blockforge-rust'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 5f2b564e9fa1eb6101abded330106fd347a9fe9f
[INFO] sha for GitHub repo jgillich/blockforge-rust: 5f2b564e9fa1eb6101abded330106fd347a9fe9f
[INFO] validating manifest of jgillich/blockforge-rust on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of jgillich/blockforge-rust on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing jgillich/blockforge-rust
[INFO] finished frobbing jgillich/blockforge-rust
[INFO] frobbed toml for jgillich/blockforge-rust written to work/ex/beta-1.38-1/sources/1.37.0/gh/jgillich/blockforge-rust/Cargo.toml
[INFO] started frobbing jgillich/blockforge-rust
[INFO] finished frobbing jgillich/blockforge-rust
[INFO] frobbed toml for jgillich/blockforge-rust written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/jgillich/blockforge-rust/Cargo.toml
[INFO] crate jgillich/blockforge-rust already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing jgillich/blockforge-rust against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-5/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/jgillich/blockforge-rust:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] 352a386e8dad3950fbe778488e54c1af81f97d9c0cc9cda617f51c3dd112edbf
[INFO] running `"docker" "start" "-a" "352a386e8dad3950fbe778488e54c1af81f97d9c0cc9cda617f51c3dd112edbf"`
[INFO] [stderr]    Compiling serde v1.0.64
[INFO] [stderr]    Compiling crunchy v0.1.6
[INFO] [stderr]    Compiling iovec v0.1.2
[INFO] [stderr]    Compiling memchr v0.1.11
[INFO] [stderr]    Compiling proc-macro2 v0.4.4
[INFO] [stderr]    Compiling memchr v2.0.1
[INFO] [stderr]    Compiling net2 v0.2.32
[INFO] [stderr]    Compiling log v0.4.1
[INFO] [stderr]    Compiling memchr v1.0.2
[INFO] [stderr]    Compiling atty v0.2.10
[INFO] [stderr]    Compiling jh-ffi v0.0.2
[INFO] [stderr]    Compiling blake v2.0.0
[INFO] [stderr]    Compiling skein-ffi v0.0.1
[INFO] [stderr]    Compiling regex-syntax v0.6.0
[INFO] [stderr]    Compiling crossbeam-epoch v0.4.1
[INFO] [stderr]    Compiling bytes v0.4.8
[INFO] [stderr]    Compiling aho-corasick v0.5.3
[INFO] [stderr]    Compiling aho-corasick v0.6.4
[INFO] [stderr]    Compiling tokio-timer v0.2.3
[INFO] [stderr]    Compiling nom v3.2.1
[INFO] [stderr]    Compiling num-traits v0.1.43
[INFO] [stderr]    Compiling mio v0.6.14
[INFO] [stderr]    Compiling thread-id v2.0.0
[INFO] [stderr]    Compiling block-buffer v0.2.0
[INFO] [stderr]    Compiling digest v0.6.2
[INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel
[INFO] [stderr]  --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/jh-ffi-0.0.2/src/lib.rs:2:1
[INFO] [stderr]   |
[INFO] [stderr] 2 | #![feature(libc)]
[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]  --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/jh-ffi-0.0.2/src/lib.rs:4:1
[INFO] [stderr]   |
[INFO] [stderr] 4 | 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]  --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/jh-ffi-0.0.2/src/native.rs:2:12
[INFO] [stderr]   |
[INFO] [stderr] 2 | use libc::{c_int};
[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]  --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/jh-ffi-0.0.2/src/native.rs:5:32
[INFO] [stderr]   |
[INFO] [stderr] 5 |     pub fn jh_hash(hashbitlen: c_int, data: *const u8, databitlen: u64, hashval: *mut u8) -> c_int;
[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]  --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/jh-ffi-0.0.2/src/native.rs:5:94
[INFO] [stderr]   |
[INFO] [stderr] 5 |     pub fn jh_hash(hashbitlen: c_int, data: *const u8, databitlen: u64, hashval: *mut u8) -> c_int;
[INFO] [stderr]   |                                                                                              ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: for more information, see https://github.com/rust-lang/rust/issues/27812
[INFO] [stderr] 
[INFO] [stderr]    Compiling crossbeam-deque v0.3.1
[INFO] [stderr] error: aborting due to 5 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 `jh-ffi`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel
[INFO] [stderr]  --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/skein-ffi-0.0.1/src/lib.rs:2:1
[INFO] [stderr]   |
[INFO] [stderr] 2 | #![feature(libc)]
[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]  --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/skein-ffi-0.0.1/src/lib.rs:4:1
[INFO] [stderr]   |
[INFO] [stderr] 4 | 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]  --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/skein-ffi-0.0.1/src/native.rs:2:12
[INFO] [stderr]   |
[INFO] [stderr] 2 | use libc::{c_int};
[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]  --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/skein-ffi-0.0.1/src/native.rs:5:35
[INFO] [stderr]   |
[INFO] [stderr] 5 |     pub fn skein_hash(hashbitlen: c_int, data: *const u8, databitlen: u64, hashval: *mut u8) -> c_int;
[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]  --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/skein-ffi-0.0.1/src/native.rs:5:97
[INFO] [stderr]   |
[INFO] [stderr] 5 |     pub fn skein_hash(hashbitlen: c_int, data: *const u8, databitlen: u64, hashval: *mut u8) -> c_int;
[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 5 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 `skein-ffi`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "352a386e8dad3950fbe778488e54c1af81f97d9c0cc9cda617f51c3dd112edbf"`
[INFO] running `"docker" "rm" "-f" "352a386e8dad3950fbe778488e54c1af81f97d9c0cc9cda617f51c3dd112edbf"`
[INFO] [stdout] 352a386e8dad3950fbe778488e54c1af81f97d9c0cc9cda617f51c3dd112edbf