[INFO] fetching crate ld 0.0.1...
[INFO] testing ld-0.0.1 against beta-2020-06-03 for beta-1.45-1
[INFO] extracting crate ld 0.0.1 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate ld 0.0.1 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 ld 0.0.1
[INFO] finished tweaking crates.io crate ld 0.0.1
[INFO] tweaked toml for crates.io crate ld 0.0.1 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] 4382f47a99702610fdb10469475efc78649c5fcaf2de11f5ee4c8cc5911331b7
[INFO] running `"docker" "start" "-a" "4382f47a99702610fdb10469475efc78649c5fcaf2de11f5ee4c8cc5911331b7"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling ld v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0432]: unresolved import `std::io::Command`
[INFO] [stderr]  --> src/lib.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::io::Command;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^ no `Command` in `io`
[INFO] [stderr] 
[INFO] [stderr] error[E0432]: unresolved import `std::io::process`
[INFO] [stderr]  --> src/lib.rs:5:14
[INFO] [stderr]   |
[INFO] [stderr] 5 | use std::io::process::InheritFd;
[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]   --> src/lib.rs:19:15
[INFO] [stderr]    |
[INFO] [stderr] 19 |     let dst = Path::new(os::getenv("OUT_DIR").unwrap());
[INFO] [stderr]    |               ^^^^ use of undeclared type or module `Path`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `Path`
[INFO] [stderr]   --> src/lib.rs:21:15
[INFO] [stderr]    |
[INFO] [stderr] 21 |     let src = Path::new(os::getenv("CARGO_MANIFEST_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]   --> src/lib.rs:13:22
[INFO] [stderr]    |
[INFO] [stderr] 13 |     let target = os::getenv("TARGET").unwrap();
[INFO] [stderr]    |                      ^^^^^^ not found in `os`
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `getenv` in module `os`
[INFO] [stderr]   --> src/lib.rs:15:25
[INFO] [stderr]    |
[INFO] [stderr] 15 |     let opt_level = os::getenv("OPT_LEVEL").unwrap();
[INFO] [stderr]    |                         ^^^^^^ not found in `os`
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `getenv` in module `os`
[INFO] [stderr]   --> src/lib.rs:19:29
[INFO] [stderr]    |
[INFO] [stderr] 19 |     let dst = Path::new(os::getenv("OUT_DIR").unwrap());
[INFO] [stderr]    |                             ^^^^^^ not found in `os`
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `getenv` in module `os`
[INFO] [stderr]   --> src/lib.rs:21:29
[INFO] [stderr]    |
[INFO] [stderr] 21 |     let src = Path::new(os::getenv("CARGO_MANIFEST_DIR").unwrap());
[INFO] [stderr]    |                             ^^^^^^ not found in `os`
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stderr]  --> src/lib.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(if_let)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 9 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0425, E0432, E0433, E0554.
[INFO] [stderr] For more information about an error, try `rustc --explain E0425`.
[INFO] [stderr] error: could not compile `ld`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "4382f47a99702610fdb10469475efc78649c5fcaf2de11f5ee4c8cc5911331b7"`
[INFO] running `"docker" "rm" "-f" "4382f47a99702610fdb10469475efc78649c5fcaf2de11f5ee4c8cc5911331b7"`
[INFO] [stdout] 4382f47a99702610fdb10469475efc78649c5fcaf2de11f5ee4c8cc5911331b7