[INFO] crate cef-sys 0.0.3 is already in cache
[INFO] testing cef-sys-0.0.3 against beta-2020-06-03 for beta-1.45-1
[INFO] extracting crate cef-sys 0.0.3 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate cef-sys 0.0.3 on toolchain beta-2020-06-03
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate cef-sys 0.0.3
[INFO] finished tweaking crates.io crate cef-sys 0.0.3
[INFO] tweaked toml for crates.io crate cef-sys 0.0.3 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "MAP_USER_ID=0" "-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" "+beta-2020-06-03" "build" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] b8a5daaf77a29c3e57f2b23a420605cbca2171295e98a638064966d32d52985c
[INFO] running `"docker" "start" "-a" "b8a5daaf77a29c3e57f2b23a420605cbca2171295e98a638064966d32d52985c"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling cef-sys v0.0.3 (/opt/rustwide/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] 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" "b8a5daaf77a29c3e57f2b23a420605cbca2171295e98a638064966d32d52985c"`
[INFO] running `"docker" "rm" "-f" "b8a5daaf77a29c3e57f2b23a420605cbca2171295e98a638064966d32d52985c"`
[INFO] [stdout] b8a5daaf77a29c3e57f2b23a420605cbca2171295e98a638064966d32d52985c