[INFO] crate cef-sys 0.0.3 is already in cache
[INFO] extracting crate cef-sys 0.0.3 into work/ex/beta-1.38-1/sources/1.37.0/reg/cef-sys/0.0.3
[INFO] extracting crate cef-sys 0.0.3 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/cef-sys/0.0.3
[INFO] validating manifest of cef-sys-0.0.3 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 cef-sys-0.0.3 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 cef-sys-0.0.3
[INFO] finished frobbing cef-sys-0.0.3
[INFO] frobbed toml for cef-sys-0.0.3 written to work/ex/beta-1.38-1/sources/1.37.0/reg/cef-sys/0.0.3/Cargo.toml
[INFO] started frobbing cef-sys-0.0.3
[INFO] finished frobbing cef-sys-0.0.3
[INFO] frobbed toml for cef-sys-0.0.3 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/cef-sys/0.0.3/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 cef-sys-0.0.3 against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-5/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/cef-sys/0.0.3:/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" "+beta-2019-08-13" "build" "--frozen"`
[INFO] [stdout] e3e7b44af1131d6e3b2f160e5424dca5aa60c7959fb0a6f7a0c05b703782cb5a
[INFO] running `"docker" "start" "-a" "e3e7b44af1131d6e3b2f160e5424dca5aa60c7959fb0a6f7a0c05b703782cb5a"`
[INFO] [stderr]    Compiling cef-sys v0.0.3 (/opt/crater/workdir)
[INFO] [stderr] error[E0433]: failed to resolve: could not find `old_io` in `std`
[INFO] [stderr]  --> build.rs:4:10
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::old_io::fs::PathExtensions;
[INFO] [stderr]   |          ^^^^^^ could not find `old_io` in `std`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `Path`
[INFO] [stderr]   --> build.rs:30:19
[INFO] [stderr]    |
[INFO] [stderr] 30 |     let cef_dir = Path::new(os::getenv("CEF_PATH")
[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:13:15
[INFO] [stderr]    |
[INFO] [stderr] 13 |     match os::getenv("TARGET").unwrap().split('-').nth(2).unwrap() {
[INFO] [stderr]    |               ^^^^^^ not found in `os`
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `dll_filename` in module `os`
[INFO] [stderr]   --> build.rs:29:29
[INFO] [stderr]    |
[INFO] [stderr] 29 |     let dll_file_name = os::dll_filename(dll_name);
[INFO] [stderr]    |                             ^^^^^^^^^^^^ not found in `os`
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `getenv` in module `os`
[INFO] [stderr]   --> build.rs:30:33
[INFO] [stderr]    |
[INFO] [stderr] 30 |     let cef_dir = Path::new(os::getenv("CEF_PATH")
[INFO] [stderr]    |                                 ^^^^^^ not found in `os`
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stderr]  --> build.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(os, io, path)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::old_io::fs::PathExtensions`
[INFO] [stderr]  --> build.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::old_io::fs::PathExtensions;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 6 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0425, E0433, E0554.
[INFO] [stderr] For more information about an error, try `rustc --explain E0425`.
[INFO] [stderr] error: Could not compile `cef-sys`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "e3e7b44af1131d6e3b2f160e5424dca5aa60c7959fb0a6f7a0c05b703782cb5a"`
[INFO] running `"docker" "rm" "-f" "e3e7b44af1131d6e3b2f160e5424dca5aa60c7959fb0a6f7a0c05b703782cb5a"`
[INFO] [stdout] e3e7b44af1131d6e3b2f160e5424dca5aa60c7959fb0a6f7a0c05b703782cb5a