[INFO] crate cargo_rub 0.0.4 is already in cache
[INFO] extracting crate cargo_rub 0.0.4 into work/ex/beta-1.38-1/sources/1.37.0/reg/cargo_rub/0.0.4
[INFO] extracting crate cargo_rub 0.0.4 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/cargo_rub/0.0.4
[INFO] validating manifest of cargo_rub-0.0.4 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 cargo_rub-0.0.4 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 cargo_rub-0.0.4
[INFO] finished frobbing cargo_rub-0.0.4
[INFO] frobbed toml for cargo_rub-0.0.4 written to work/ex/beta-1.38-1/sources/1.37.0/reg/cargo_rub/0.0.4/Cargo.toml
[INFO] started frobbing cargo_rub-0.0.4
[INFO] finished frobbing cargo_rub-0.0.4
[INFO] frobbed toml for cargo_rub-0.0.4 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/cargo_rub/0.0.4/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[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 cargo_rub-0.0.4 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-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/cargo_rub/0.0.4:/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] d581f6a9c0e8c5a7b34a51b0b8a6798d5e78a54c519cc56a56d82bcd1612aa5e
[INFO] running `"docker" "start" "-a" "d581f6a9c0e8c5a7b34a51b0b8a6798d5e78a54c519cc56a56d82bcd1612aa5e"`
[INFO] [stderr]    Compiling buildable v0.0.5
[INFO] [stderr]    Compiling scm v0.0.3
[INFO] [stderr]    Compiling utils v0.0.3
[INFO] [stderr]    Compiling cargo_rub v0.0.4 (/opt/crater/workdir)
[INFO] [stderr] error[E0658]: non-builtin inner attributes are unstable
[INFO] [stderr]   --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/buildable-0.0.5/src/lib.rs:11:1
[INFO] [stderr]    |
[INFO] [stderr] 11 | #![experimental]
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: for more information, see https://github.com/rust-lang/rust/issues/54726
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: The attribute `experimental` is currently unknown to the compiler and may have meaning added to it in the future
[INFO] [stderr]   --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/buildable-0.0.5/src/lib.rs:11:4
[INFO] [stderr]    |
[INFO] [stderr] 11 | #![experimental]
[INFO] [stderr]    |    ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: for more information, see https://github.com/rust-lang/rust/issues/29642
[INFO] [stderr] 
[INFO] [stderr] warning: unknown lint: `unstable`
[INFO] [stderr]  --> build.rs:2:10
[INFO] [stderr]   |
[INFO] [stderr] 2 | #![allow(unstable)]
[INFO] [stderr]   |          ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unknown_lints)] on by default
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: non-builtin inner attributes are unstable
[INFO] [stderr]  --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/scm-0.0.3/src/lib.rs:5:1
[INFO] [stderr]   |
[INFO] [stderr] 5 | #![experimental]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: for more information, see https://github.com/rust-lang/rust/issues/54726
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: The attribute `experimental` is currently unknown to the compiler and may have meaning added to it in the future
[INFO] [stderr]  --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/scm-0.0.3/src/lib.rs:5:4
[INFO] [stderr]   |
[INFO] [stderr] 5 | #![experimental]
[INFO] [stderr]   |    ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: for more information, see https://github.com/rust-lang/rust/issues/29642
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: non-builtin inner attributes are unstable
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/scm-0.0.3/src/git.rs:129:1
[INFO] [stderr]     |
[INFO] [stderr] 129 | #![experimental]
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: for more information, see https://github.com/rust-lang/rust/issues/54726
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: non-builtin inner attributes are unstable
[INFO] [stderr]   --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/scm-0.0.3/src/hg.rs:93:1
[INFO] [stderr]    |
[INFO] [stderr] 93 | #![experimental]
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: for more information, see https://github.com/rust-lang/rust/issues/54726
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: non-builtin inner attributes are unstable
[INFO] [stderr]   --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/scm-0.0.3/src/svn.rs:11:1
[INFO] [stderr]    |
[INFO] [stderr] 11 | #![experimental]
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: for more information, see https://github.com/rust-lang/rust/issues/54726
[INFO] [stderr] 
[INFO] [stderr] error[E0432]: unresolved import `std::io::File`
[INFO] [stderr]  --> build.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use std::io::File;
[INFO] [stderr]   |     ^^^^^^^^^^^^^ no `File` in `io`
[INFO] [stderr] 
[INFO] [stderr] error[E0432]: unresolved import `std::io::process`
[INFO] [stderr]  --> build.rs:7:14
[INFO] [stderr]   |
[INFO] [stderr] 7 | use std::io::process::Command;
[INFO] [stderr]   |              ^^^^^^^ could not find `process` in `io`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `Path`
[INFO] [stderr]   --> build.rs:58:15
[INFO] [stderr]    |
[INFO] [stderr] 58 |     let dst = Path::new(os::getenv("OUT_DIR").unwrap());
[INFO] [stderr]    |               ^^^^ use of undeclared type or module `Path`
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `getenv` in module `os`
[INFO] [stderr]   --> build.rs:58:29
[INFO] [stderr]    |
[INFO] [stderr] 58 |     let dst = Path::new(os::getenv("OUT_DIR").unwrap());
[INFO] [stderr]    |                             ^^^^^^ not found in `os`
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: The attribute `experimental` is currently unknown to the compiler and may have meaning added to it in the future
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/scm-0.0.3/src/git.rs:129:4
[INFO] [stderr]     |
[INFO] [stderr] 129 | #![experimental]
[INFO] [stderr]     |    ^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: for more information, see https://github.com/rust-lang/rust/issues/29642
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: The attribute `experimental` is currently unknown to the compiler and may have meaning added to it in the future
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/scm-0.0.3/src/git.rs:139:3
[INFO] [stderr]     |
[INFO] [stderr] 139 | #[experimental]
[INFO] [stderr]     |   ^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: for more information, see https://github.com/rust-lang/rust/issues/29642
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: The attribute `experimental` is currently unknown to the compiler and may have meaning added to it in the future
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/scm-0.0.3/src/git.rs:151:3
[INFO] [stderr]     |
[INFO] [stderr] 151 | #[experimental]
[INFO] [stderr]     |   ^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: for more information, see https://github.com/rust-lang/rust/issues/29642
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: The attribute `experimental` is currently unknown to the compiler and may have meaning added to it in the future
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/scm-0.0.3/src/git.rs:161:3
[INFO] [stderr]     |
[INFO] [stderr] 161 | #[experimental]
[INFO] [stderr]     |   ^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: for more information, see https://github.com/rust-lang/rust/issues/29642
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: The attribute `experimental` is currently unknown to the compiler and may have meaning added to it in the future
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/scm-0.0.3/src/git.rs:176:7
[INFO] [stderr]     |
[INFO] [stderr] 176 |     #[experimental]
[INFO] [stderr]     |       ^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: for more information, see https://github.com/rust-lang/rust/issues/29642
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: The attribute `experimental` is currently unknown to the compiler and may have meaning added to it in the future
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/scm-0.0.3/src/git.rs:198:7
[INFO] [stderr]     |
[INFO] [stderr] 198 |     #[experimental]
[INFO] [stderr]     |       ^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: for more information, see https://github.com/rust-lang/rust/issues/29642
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: The attribute `experimental` is currently unknown to the compiler and may have meaning added to it in the future
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/scm-0.0.3/src/git.rs:216:7
[INFO] [stderr]     |
[INFO] [stderr] 216 |     #[experimental]
[INFO] [stderr]     |       ^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: for more information, see https://github.com/rust-lang/rust/issues/29642
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: The attribute `experimental` is currently unknown to the compiler and may have meaning added to it in the future
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/scm-0.0.3/src/git.rs:239:7
[INFO] [stderr]     |
[INFO] [stderr] 239 |     #[experimental]
[INFO] [stderr]     |       ^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: for more information, see https://github.com/rust-lang/rust/issues/29642
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: The attribute `experimental` is currently unknown to the compiler and may have meaning added to it in the future
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/scm-0.0.3/src/git.rs:299:7
[INFO] [stderr]     |
[INFO] [stderr] 299 |     #[experimental]
[INFO] [stderr]     |       ^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: for more information, see https://github.com/rust-lang/rust/issues/29642
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: The attribute `experimental` is currently unknown to the compiler and may have meaning added to it in the future
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/scm-0.0.3/src/git.rs:310:7
[INFO] [stderr]     |
[INFO] [stderr] 310 |     #[experimental]
[INFO] [stderr]     |       ^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: for more information, see https://github.com/rust-lang/rust/issues/29642
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: The attribute `experimental` is currently unknown to the compiler and may have meaning added to it in the future
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/scm-0.0.3/src/git.rs:321:7
[INFO] [stderr]     |
[INFO] [stderr] 321 |     #[experimental]
[INFO] [stderr]     |       ^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: for more information, see https://github.com/rust-lang/rust/issues/29642
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: The attribute `experimental` is currently unknown to the compiler and may have meaning added to it in the future
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/scm-0.0.3/src/git.rs:332:7
[INFO] [stderr]     |
[INFO] [stderr] 332 |     #[experimental]
[INFO] [stderr]     |       ^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: for more information, see https://github.com/rust-lang/rust/issues/29642
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: The attribute `experimental` is currently unknown to the compiler and may have meaning added to it in the future
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/scm-0.0.3/src/git.rs:343:7
[INFO] [stderr]     |
[INFO] [stderr] 343 |     #[experimental]
[INFO] [stderr]     |       ^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: for more information, see https://github.com/rust-lang/rust/issues/29642
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: The attribute `experimental` is currently unknown to the compiler and may have meaning added to it in the future
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/scm-0.0.3/src/git.rs:354:7
[INFO] [stderr]     |
[INFO] [stderr] 354 |     #[experimental]
[INFO] [stderr]     |       ^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: for more information, see https://github.com/rust-lang/rust/issues/29642
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: The attribute `experimental` is currently unknown to the compiler and may have meaning added to it in the future
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/scm-0.0.3/src/git.rs:371:7
[INFO] [stderr]     |
[INFO] [stderr] 371 |     #[experimental]
[INFO] [stderr]     |       ^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: for more information, see https://github.com/rust-lang/rust/issues/29642
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: The attribute `experimental` is currently unknown to the compiler and may have meaning added to it in the future
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/scm-0.0.3/src/git.rs:387:7
[INFO] [stderr]     |
[INFO] [stderr] 387 |     #[experimental]
[INFO] [stderr]     |       ^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: for more information, see https://github.com/rust-lang/rust/issues/29642
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: The attribute `experimental` is currently unknown to the compiler and may have meaning added to it in the future
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/scm-0.0.3/src/git.rs:397:7
[INFO] [stderr]     |
[INFO] [stderr] 397 |     #[experimental]
[INFO] [stderr]     |       ^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: for more information, see https://github.com/rust-lang/rust/issues/29642
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: The attribute `experimental` is currently unknown to the compiler and may have meaning added to it in the future
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/scm-0.0.3/src/git.rs:407:7
[INFO] [stderr]     |
[INFO] [stderr] 407 |     #[experimental]
[INFO] [stderr]     |       ^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: for more information, see https://github.com/rust-lang/rust/issues/29642
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: The attribute `experimental` is currently unknown to the compiler and may have meaning added to it in the future
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/scm-0.0.3/src/git.rs:417:7
[INFO] [stderr]     |
[INFO] [stderr] 417 |     #[experimental]
[INFO] [stderr]     |       ^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: for more information, see https://github.com/rust-lang/rust/issues/29642
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: The attribute `experimental` is currently unknown to the compiler and may have meaning added to it in the future
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/scm-0.0.3/src/git.rs:427:7
[INFO] [stderr]     |
[INFO] [stderr] 427 |     #[experimental]
[INFO] [stderr]     |       ^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: for more information, see https://github.com/rust-lang/rust/issues/29642
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: The attribute `experimental` is currently unknown to the compiler and may have meaning added to it in the future
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/scm-0.0.3/src/git.rs:437:7
[INFO] [stderr]     |
[INFO] [stderr] 437 |     #[experimental]
[INFO] [stderr]     |       ^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: for more information, see https://github.com/rust-lang/rust/issues/29642
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: The attribute `experimental` is currently unknown to the compiler and may have meaning added to it in the future
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/scm-0.0.3/src/git.rs:447:7
[INFO] [stderr]     |
[INFO] [stderr] 447 |     #[experimental]
[INFO] [stderr]     |       ^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: for more information, see https://github.com/rust-lang/rust/issues/29642
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: The attribute `experimental` is currently unknown to the compiler and may have meaning added to it in the future
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/scm-0.0.3/src/git.rs:525:7
[INFO] [stderr]     |
[INFO] [stderr] 525 |     #[experimental]
[INFO] [stderr]     |       ^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: for more information, see https://github.com/rust-lang/rust/issues/29642
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: The attribute `experimental` is currently unknown to the compiler and may have meaning added to it in the future
[INFO] [stderr]   --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/scm-0.0.3/src/hg.rs:93:4
[INFO] [stderr]    |
[INFO] [stderr] 93 | #![experimental]
[INFO] [stderr]    |    ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: for more information, see https://github.com/rust-lang/rust/issues/29642
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: The attribute `experimental` is currently unknown to the compiler and may have meaning added to it in the future
[INFO] [stderr]   --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/scm-0.0.3/src/hg.rs:98:3
[INFO] [stderr]    |
[INFO] [stderr] 98 | #[experimental]
[INFO] [stderr]    |   ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: for more information, see https://github.com/rust-lang/rust/issues/29642
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: The attribute `experimental` is currently unknown to the compiler and may have meaning added to it in the future
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/scm-0.0.3/src/hg.rs:134:7
[INFO] [stderr]     |
[INFO] [stderr] 134 |     #[experimental]
[INFO] [stderr]     |       ^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: for more information, see https://github.com/rust-lang/rust/issues/29642
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: The attribute `experimental` is currently unknown to the compiler and may have meaning added to it in the future
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/scm-0.0.3/src/hg.rs:152:7
[INFO] [stderr]     |
[INFO] [stderr] 152 |     #[experimental]
[INFO] [stderr]     |       ^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: for more information, see https://github.com/rust-lang/rust/issues/29642
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: The attribute `experimental` is currently unknown to the compiler and may have meaning added to it in the future
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/scm-0.0.3/src/hg.rs:175:7
[INFO] [stderr]     |
[INFO] [stderr] 175 |     #[experimental]
[INFO] [stderr]     |       ^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: for more information, see https://github.com/rust-lang/rust/issues/29642
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: The attribute `experimental` is currently unknown to the compiler and may have meaning added to it in the future
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/scm-0.0.3/src/hg.rs:236:7
[INFO] [stderr]     |
[INFO] [stderr] 236 |     #[experimental]
[INFO] [stderr]     |       ^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: for more information, see https://github.com/rust-lang/rust/issues/29642
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: The attribute `experimental` is currently unknown to the compiler and may have meaning added to it in the future
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/scm-0.0.3/src/hg.rs:247:7
[INFO] [stderr]     |
[INFO] [stderr] 247 |     #[experimental]
[INFO] [stderr]     |       ^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: for more information, see https://github.com/rust-lang/rust/issues/29642
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: The attribute `experimental` is currently unknown to the compiler and may have meaning added to it in the future
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/scm-0.0.3/src/hg.rs:258:7
[INFO] [stderr]     |
[INFO] [stderr] 258 |     #[experimental]
[INFO] [stderr]     |       ^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: for more information, see https://github.com/rust-lang/rust/issues/29642
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: The attribute `experimental` is currently unknown to the compiler and may have meaning added to it in the future
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/scm-0.0.3/src/hg.rs:269:7
[INFO] [stderr]     |
[INFO] [stderr] 269 |     #[experimental]
[INFO] [stderr]     |       ^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: for more information, see https://github.com/rust-lang/rust/issues/29642
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: The attribute `experimental` is currently unknown to the compiler and may have meaning added to it in the future
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/scm-0.0.3/src/hg.rs:280:7
[INFO] [stderr]     |
[INFO] [stderr] 280 |     #[experimental]
[INFO] [stderr]     |       ^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: for more information, see https://github.com/rust-lang/rust/issues/29642
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: The attribute `experimental` is currently unknown to the compiler and may have meaning added to it in the future
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/scm-0.0.3/src/hg.rs:291:7
[INFO] [stderr]     |
[INFO] [stderr] 291 |     #[experimental]
[INFO] [stderr]     |       ^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: for more information, see https://github.com/rust-lang/rust/issues/29642
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: The attribute `experimental` is currently unknown to the compiler and may have meaning added to it in the future
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/scm-0.0.3/src/hg.rs:302:7
[INFO] [stderr]     |
[INFO] [stderr] 302 |     #[experimental]
[INFO] [stderr]     |       ^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: for more information, see https://github.com/rust-lang/rust/issues/29642
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: The attribute `experimental` is currently unknown to the compiler and may have meaning added to it in the future
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/scm-0.0.3/src/hg.rs:313:7
[INFO] [stderr]     |
[INFO] [stderr] 313 |     #[experimental]
[INFO] [stderr]     |       ^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: for more information, see https://github.com/rust-lang/rust/issues/29642
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: The attribute `experimental` is currently unknown to the compiler and may have meaning added to it in the future
[INFO] [stderr]   --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/scm-0.0.3/src/svn.rs:11:4
[INFO] [stderr]    |
[INFO] [stderr] 11 | #![experimental]
[INFO] [stderr]    |    ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: for more information, see https://github.com/rust-lang/rust/issues/29642
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: The attribute `experimental` is currently unknown to the compiler and may have meaning added to it in the future
[INFO] [stderr]   --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/scm-0.0.3/src/svn.rs:16:3
[INFO] [stderr]    |
[INFO] [stderr] 16 | #[experimental]
[INFO] [stderr]    |   ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: for more information, see https://github.com/rust-lang/rust/issues/29642
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: The attribute `experimental` is currently unknown to the compiler and may have meaning added to it in the future
[INFO] [stderr]   --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/scm-0.0.3/src/svn.rs:52:7
[INFO] [stderr]    |
[INFO] [stderr] 52 |     #[experimental]
[INFO] [stderr]    |       ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: for more information, see https://github.com/rust-lang/rust/issues/29642
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: The attribute `experimental` is currently unknown to the compiler and may have meaning added to it in the future
[INFO] [stderr]   --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/scm-0.0.3/src/svn.rs:70:7
[INFO] [stderr]    |
[INFO] [stderr] 70 |     #[experimental]
[INFO] [stderr]    |       ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: for more information, see https://github.com/rust-lang/rust/issues/29642
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: The attribute `experimental` is currently unknown to the compiler and may have meaning added to it in the future
[INFO] [stderr]   --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/scm-0.0.3/src/svn.rs:93:7
[INFO] [stderr]    |
[INFO] [stderr] 93 |     #[experimental]
[INFO] [stderr]    |       ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: for more information, see https://github.com/rust-lang/rust/issues/29642
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: The attribute `experimental` is currently unknown to the compiler and may have meaning added to it in the future
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/scm-0.0.3/src/svn.rs:178:7
[INFO] [stderr]     |
[INFO] [stderr] 178 |     #[experimental]
[INFO] [stderr]     |       ^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: for more information, see https://github.com/rust-lang/rust/issues/29642
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: The attribute `experimental` is currently unknown to the compiler and may have meaning added to it in the future
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/scm-0.0.3/src/svn.rs:189:7
[INFO] [stderr]     |
[INFO] [stderr] 189 |     #[experimental]
[INFO] [stderr]     |       ^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: for more information, see https://github.com/rust-lang/rust/issues/29642
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: The attribute `experimental` is currently unknown to the compiler and may have meaning added to it in the future
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/scm-0.0.3/src/svn.rs:200:7
[INFO] [stderr]     |
[INFO] [stderr] 200 |     #[experimental]
[INFO] [stderr]     |       ^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: for more information, see https://github.com/rust-lang/rust/issues/29642
[INFO] [stderr] 
[INFO] [stderr] error[E0432]: unresolved import `std::io::File`
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/scm-0.0.3/src/git.rs:132:5
[INFO] [stderr]     |
[INFO] [stderr] 132 | use std::io::File;
[INFO] [stderr]     |     ^^^^^^^^^^^^^ no `File` in `io`
[INFO] [stderr] 
[INFO] [stderr] error[E0432]: unresolved import `std::io::process`
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/scm-0.0.3/src/git.rs:133:14
[INFO] [stderr]     |
[INFO] [stderr] 133 | use std::io::process::Command;
[INFO] [stderr]     |              ^^^^^^^ could not find `process` in `io`
[INFO] [stderr] 
[INFO] [stderr] error[E0432]: unresolved import `std::os::getcwd`
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/scm-0.0.3/src/git.rs:134:5
[INFO] [stderr]     |
[INFO] [stderr] 134 | use std::os::getcwd;
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^ no `getcwd` in `os`
[INFO] [stderr] 
[INFO] [stderr] error[E0432]: unresolved import `std::io::process`
[INFO] [stderr]   --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/scm-0.0.3/src/hg.rs:95:14
[INFO] [stderr]    |
[INFO] [stderr] 95 | use std::io::process::Command;
[INFO] [stderr]    |              ^^^^^^^ could not find `process` in `io`
[INFO] [stderr] 
[INFO] [stderr] error[E0432]: unresolved import `std::io::process`
[INFO] [stderr]   --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/scm-0.0.3/src/svn.rs:13:14
[INFO] [stderr]    |
[INFO] [stderr] 13 | use std::io::process::Command;
[INFO] [stderr]    |              ^^^^^^^ could not find `process` in `io`
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: The attribute `experimental` is currently unknown to the compiler and may have meaning added to it in the future
[INFO] [stderr]   --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/buildable-0.0.5/src/lib.rs:20:3
[INFO] [stderr]    |
[INFO] [stderr] 20 | #[experimental]
[INFO] [stderr]    |   ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: for more information, see https://github.com/rust-lang/rust/issues/29642
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: The attribute `experimental` is currently unknown to the compiler and may have meaning added to it in the future
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/buildable-0.0.5/src/lib.rs:196:3
[INFO] [stderr]     |
[INFO] [stderr] 196 | #[experimental]
[INFO] [stderr]     |   ^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: for more information, see https://github.com/rust-lang/rust/issues/29642
[INFO] [stderr] 
[INFO] [stderr] error: cannot find derive macro `Show` in this scope
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/buildable-0.0.5/src/lib.rs:214:47
[INFO] [stderr]     |
[INFO] [stderr] 214 | #[derive(Copy,PartialEq, Eq, PartialOrd, Ord, Show)]
[INFO] [stderr]     |                                               ^^^^
[INFO] [stderr] error[E0658]: The attribute `experimental` is currently unknown to the compiler and may have meaning added to it in the future
[INFO] [stderr]   --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/utils-0.0.3/src/lib.rs:83:3
[INFO] [stderr]    |
[INFO] [stderr] 83 | #[experimental]
[INFO] [stderr]    |   ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: for more information, see https://github.com/rust-lang/rust/issues/29642
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: The attribute `experimental` is currently unknown to the compiler and may have meaning added to it in the future
[INFO] [stderr]   --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/utils-0.0.3/src/lib.rs:77:3
[INFO] [stderr]    |
[INFO] [stderr] 77 | #[experimental]
[INFO] [stderr]    |   ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0412]: cannot find type `Path` in this scope
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/scm-0.0.3/src/git.rs:163:16
[INFO] [stderr]     |
[INFO] [stderr] 163 |     wd: Option<Path>,
[INFO] [stderr]     |                ^^^^ not found in this scope
[INFO] [stderr] help: possible candidate is found in another module, you can import it into scope
[INFO] [stderr]     |
[INFO] [stderr] 130 | use std::path::Path;
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] error[E0412]: cannot find type `Path` in this scope
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/scm-0.0.3/src/git.rs:199:30
[INFO] [stderr]     |
[INFO] [stderr] 199 |     pub fn wd(&mut self, wd: Path) -> &mut GitCommand {
[INFO] [stderr]     |                              ^^^^ not found in this scope
[INFO] [stderr] help: possible candidate is found in another module, you can import it into scope
[INFO] [stderr]     |
[INFO] [stderr] 130 | use std::path::Path;
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] error[E0412]: cannot find type `Path` in this scope
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/scm-0.0.3/src/hg.rs:100:16
[INFO] [stderr]     |
[INFO] [stderr] 100 |     wd: Option<Path>,
[INFO] [stderr]     |                ^^^^ not found in this scope
[INFO] [stderr] help: possible candidate is found in another module, you can import it into scope
[INFO] [stderr]     |
[INFO] [stderr] 94  | use std::path::Path;
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] error[E0412]: cannot find type `Path` in this scope
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/scm-0.0.3/src/hg.rs:135:30
[INFO] [stderr]     |
[INFO] [stderr] 135 |     pub fn wd(&mut self, wd: Path) -> &mut HgCommand {
[INFO] [stderr]     |                              ^^^^ not found in this scope
[INFO] [stderr] help: possible candidate is found in another module, you can import it into scope
[INFO] [stderr]     |
[INFO] [stderr] 94  | use std::path::Path;
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] error[E0412]: cannot find type `Path` in this scope
[INFO] [stderr]   --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/scm-0.0.3/src/svn.rs:18:16
[INFO] [stderr]    |
[INFO] [stderr] 18 |     wd: Option<Path>,
[INFO] [stderr]    |                ^^^^ not found in this scope
[INFO] [stderr] help: possible candidate is found in another module, you can import it into scope
[INFO] [stderr]    |
[INFO] [stderr] 12 | use std::path::Path;
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] error[E0412]: cannot find type `Path` in this scope
[INFO] [stderr]   --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/scm-0.0.3/src/svn.rs:53:30
[INFO] [stderr]    |
[INFO] [stderr] 53 |     pub fn wd(&mut self, wd: Path) -> &mut SvnCommand {
[INFO] [stderr]    |                              ^^^^ not found in this scope
[INFO] [stderr] help: possible candidate is found in another module, you can import it into scope
[INFO] [stderr]    |
[INFO] [stderr] 12 | use std::path::Path;
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr]    |
[INFO] [stderr]    = note: for more information, see https://github.com/rust-lang/rust/issues/29642
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: The attribute `experimental` is currently unknown to the compiler and may have meaning added to it in the future
[INFO] [stderr]   --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/utils-0.0.3/src/lib.rs:37:3
[INFO] [stderr]    |
[INFO] [stderr] 37 | #[experimental]
[INFO] [stderr]    |   ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: for more information, see https://github.com/rust-lang/rust/issues/29642
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: The attribute `experimental` is currently unknown to the compiler and may have meaning added to it in the future
[INFO] [stderr]   --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/utils-0.0.3/src/lib.rs:29:3
[INFO] [stderr]    |
[INFO] [stderr] 29 | #[experimental]
[INFO] [stderr]    |   ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: for more information, see https://github.com/rust-lang/rust/issues/29642
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: The attribute `experimental` is currently unknown to the compiler and may have meaning added to it in the future
[INFO] [stderr]   --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/utils-0.0.3/src/lib.rs:13:3
[INFO] [stderr]    |
[INFO] [stderr] 13 | #[experimental]
[INFO] [stderr]    |   ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: for more information, see https://github.com/rust-lang/rust/issues/29642
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: The attribute `experimental` is currently unknown to the compiler and may have meaning added to it in the future
[INFO] [stderr]   --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/utils-0.0.3/src/empty.rs:63:3
[INFO] [stderr]    |
[INFO] [stderr] 63 | #[experimental]
[INFO] [stderr]    |   ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: for more information, see https://github.com/rust-lang/rust/issues/29642
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: The attribute `experimental` is currently unknown to the compiler and may have meaning added to it in the future
[INFO] [stderr]   --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/utils-0.0.3/src/empty.rs:45:3
[INFO] [stderr]    |
[INFO] [stderr] 45 | #[experimental]
[INFO] [stderr]    |   ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: for more information, see https://github.com/rust-lang/rust/issues/29642
[INFO] [stderr] error[E0599]: no method named `as_slice` found for type `std::string::String` in the current scope
[INFO] [stderr] 
[INFO] [stderr]   --> build.rs:60:25
[INFO] [stderr]    |
[INFO] [stderr] 60 |     f.write_str(version.as_slice()).unwrap();
[INFO] [stderr]    |                         ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: The attribute `experimental` is currently unknown to the compiler and may have meaning added to it in the future
[INFO] [stderr]   --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/utils-0.0.3/src/empty.rs:37:3
[INFO] [stderr]    |
[INFO] [stderr] 37 | #[experimental]
[INFO] [stderr]    |   ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: for more information, see https://github.com/rust-lang/rust/issues/29642
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: The attribute `experimental` is currently unknown to the compiler and may have meaning added to it in the future
[INFO] [stderr]   --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/utils-0.0.3/src/empty.rs:29:3
[INFO] [stderr]    |
[INFO] [stderr] 29 | #[experimental]
[INFO] [stderr]    |   ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: for more information, see https://github.com/rust-lang/rust/issues/29642
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: The attribute `experimental` is currently unknown to the compiler and may have meaning added to it in the future
[INFO] [stderr]   --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/utils-0.0.3/src/empty.rs:21:3
[INFO] [stderr]    |
[INFO] [stderr] 21 | #[experimental]
[INFO] [stderr]    |   ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: for more information, see https://github.com/rust-lang/rust/issues/29642
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: The attribute `experimental` is currently unknown to the compiler and may have meaning added to it in the future
[INFO] [stderr]   --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/utils-0.0.3/src/empty.rs:14:3
[INFO] [stderr]    |
[INFO] [stderr] 14 | #[experimental]
[INFO] [stderr]    |   ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: for more information, see https://github.com/rust-lang/rust/issues/29642
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 5 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0425, E0432, E0433, E0599.
[INFO] [stderr] For more information about an error, try `rustc --explain E0425`.
[INFO] [stderr] error: Could not compile `cargo_rub`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `Path`
[INFO] [stderr]   --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/buildable-0.0.5/src/lib.rs:45:28
[INFO] [stderr]    |
[INFO] [stderr] 45 |                 let path = Path::new(home);
[INFO] [stderr]    |                            ^^^^ use of undeclared type or module `Path`
[INFO] [stderr] 
[INFO] [stderr] error[E0412]: cannot find type `Path` in this scope
[INFO] [stderr]   --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/buildable-0.0.5/src/lib.rs:23:17
[INFO] [stderr]    |
[INFO] [stderr] 23 |     dir: Option<Path>,
[INFO] [stderr]    |                 ^^^^ not found in this scope
[INFO] [stderr] help: possible candidate is found in another module, you can import it into scope
[INFO] [stderr]    |
[INFO] [stderr] 13 | use std::path::Path;
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `getenv` in module `std::os`
[INFO] [stderr]   --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/buildable-0.0.5/src/lib.rs:41:43
[INFO] [stderr]    |
[INFO] [stderr] 41 |                 let home = match std::os::getenv("HOME") {
[INFO] [stderr]    |                                           ^^^^^^ not found in `std::os`
[INFO] [stderr] 
[INFO] [stderr] error[E0412]: cannot find type `Path` in this scope
[INFO] [stderr]   --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/buildable-0.0.5/src/lib.rs:69:32
[INFO] [stderr]    |
[INFO] [stderr] 69 |     pub fn dir(&mut self, dir: Path) -> &mut BuildConfig {
[INFO] [stderr]    |                                ^^^^ not found in this scope
[INFO] [stderr] help: possible candidate is found in another module, you can import it into scope
[INFO] [stderr]    |
[INFO] [stderr] 13 | use std::path::Path;
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] error[E0412]: cannot find type `Path` in this scope
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/buildable-0.0.5/src/lib.rs:155:41
[INFO] [stderr]     |
[INFO] [stderr] 155 |     pub fn get_dir<'a>(&'a self) -> &'a Path {
[INFO] [stderr]     |                                         ^^^^ not found in this scope
[INFO] [stderr] help: possible candidate is found in another module, you can import it into scope
[INFO] [stderr]     |
[INFO] [stderr] 13  | use std::path::Path;
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] error[E0609]: no field `output` on type `std::process::Output`
[INFO] [stderr]   --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/utils-0.0.3/src/lib.rs:17:36
[INFO] [stderr]    |
[INFO] [stderr] 17 |             match str::from_utf8(p.output.as_slice()).unwrap().trim().parse() {
[INFO] [stderr]    |                                    ^^^^^^ unknown field
[INFO] [stderr]    |
[INFO] [stderr]    = note: available fields are: `status`, `stdout`, `stderr`
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `as_slice` found for type `&std::string::String` in the current scope
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/scm-0.0.3/src/git.rs:281:23
[INFO] [stderr]     |
[INFO] [stderr] 281 |             cmd.env(k.as_slice(), v.as_slice());
[INFO] [stderr]     |                       ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `as_slice` found for type `&std::string::String` in the current scope
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/scm-0.0.3/src/git.rs:281:37
[INFO] [stderr]     |
[INFO] [stderr] 281 |             cmd.env(k.as_slice(), v.as_slice());
[INFO] [stderr]     |                                     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0308]: mismatched types
[INFO] [stderr]   --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/utils-0.0.3/src/lib.rs:18:17
[INFO] [stderr]    |
[INFO] [stderr] 17 |             match str::from_utf8(p.output.as_slice()).unwrap().trim().parse() {
[INFO] [stderr]    |                   ----------------------------------------------------------- this match expression has type `std::result::Result<_, _>`
[INFO] [stderr] 18 |                 Some(i) => i,
[INFO] [stderr]    |                 ^^^^^^^ expected enum `std::result::Result`, found enum `std::option::Option`
[INFO] [stderr]    |
[INFO] [stderr]    = note: expected type `std::result::Result<_, _>`
[INFO] [stderr]               found type `std::option::Option<_>`
[INFO] [stderr] 
[INFO] [stderr] error[E0308]: mismatched types
[INFO] [stderr]   --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/utils-0.0.3/src/lib.rs:19:17
[INFO] [stderr]    |
[INFO] [stderr] 19 |                 None    => panic!("unable to cast nproc output!"),
[INFO] [stderr]    |                 ^^^^ expected enum `std::result::Result`, found enum `std::option::Option`
[INFO] [stderr]    |
[INFO] [stderr]    = note: expected type `std::result::Result<_, _>`
[INFO] [stderr]               found type `std::option::Option<_>`
[INFO] [stderr] 
[INFO] [stderr] error[E0609]: no field `output` on type `std::process::Output`
[INFO] [stderr]   --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/utils-0.0.3/src/lib.rs:41:54
[INFO] [stderr]    |
[INFO] [stderr] 41 |             let mut res =  String::from_utf8_lossy(o.output.as_slice());
[INFO] [stderr]    |                                                      ^^^^^^ unknown field
[INFO] [stderr]    |
[INFO] [stderr]    = note: available fields are: `status`, `stdout`, `stderr`
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `as_slice` found for type `&std::string::String` in the current scope
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/scm-0.0.3/src/hg.rs:218:23
[INFO] [stderr]     |
[INFO] [stderr] 218 |             cmd.env(k.as_slice(), v.as_slice());
[INFO] [stderr]     |                       ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `as_slice` found for type `&std::string::String` in the current scope
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/scm-0.0.3/src/hg.rs:218:37
[INFO] [stderr]     |
[INFO] [stderr] 218 |             cmd.env(k.as_slice(), v.as_slice());
[INFO] [stderr]     |                                     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `as_slice` found for type `&std::string::String` in the current scope
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/scm-0.0.3/src/svn.rs:135:23
[INFO] [stderr]     |
[INFO] [stderr] 135 |             cmd.env(k.as_slice(), v.as_slice());
[INFO] [stderr]     |                       ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `as_slice` found for type `&std::string::String` in the current scope
[INFO] [stderr]   --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/utils-0.0.3/src/empty.rs:32:14
[INFO] [stderr]    |
[INFO] [stderr] 32 |         self.as_slice().is_empty()
[INFO] [stderr]    |              ^^^^^^^^
[INFO] [stderr] error[E0599]: no method named `as_slice` found for type `&std::string::String` in the current scope
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/scm-0.0.3/src/svn.rs:135:37
[INFO] [stderr]     |
[INFO] [stderr] 135 |             cmd.env(k.as_slice(), v.as_slice());
[INFO] [stderr]     |                                     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] 
[INFO] [stderr] error[E0277]: the trait bound `LifeCycle: std::clone::Clone` is not satisfied
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/buildable-0.0.5/src/lib.rs:214:10
[INFO] [stderr]     |
[INFO] [stderr] 214 | #[derive(Copy,PartialEq, Eq, PartialOrd, Ord, Show)]
[INFO] [stderr]     |          ^^^^ the trait `std::clone::Clone` is not implemented for `LifeCycle`
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `as_slice` found for type `&std::string::String` in the current scope
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/scm-0.0.3/src/svn.rs:160:23
[INFO] [stderr]     |
[INFO] [stderr] 160 |             cmd.env(k.as_slice(), v.as_slice());
[INFO] [stderr]     |                       ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 16 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0308, E0599, E0609, E0658.
[INFO] [stderr] For more information about an error, try `rustc --explain E0308`.
[INFO] [stderr] error[E0599]: no method named `as_slice` found for type `&std::string::String` in the current scope
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/scm-0.0.3/src/svn.rs:160:37
[INFO] [stderr]     |
[INFO] [stderr] 160 |             cmd.env(k.as_slice(), v.as_slice());
[INFO] [stderr]     |                                     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 11 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0277, E0412, E0425, E0433, E0658.
[INFO] [stderr] For more information about an error, try `rustc --explain E0277`.
[INFO] [stderr] error: aborting due to 68 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0412, E0432, E0599, E0658.
[INFO] [stderr] For more information about an error, try `rustc --explain E0412`.
[INFO] [stderr] error: Could not compile `scm`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: Could not compile `utils`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: Could not compile `buildable`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "d581f6a9c0e8c5a7b34a51b0b8a6798d5e78a54c519cc56a56d82bcd1612aa5e"`
[INFO] running `"docker" "rm" "-f" "d581f6a9c0e8c5a7b34a51b0b8a6798d5e78a54c519cc56a56d82bcd1612aa5e"`
[INFO] [stdout] d581f6a9c0e8c5a7b34a51b0b8a6798d5e78a54c519cc56a56d82bcd1612aa5e