[INFO] updating cached repository https://github.com/svevang/pipclient-tokenize
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 957e8caa463c73e6b5c808b91632beb2283d4906
[INFO] testing svevang/pipclient-tokenize against beta-2020-06-03 for beta-1.45-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsvevang%2Fpipclient-tokenize" "/workspace/builds/worker-1/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/svevang/pipclient-tokenize 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 git repo https://github.com/svevang/pipclient-tokenize
[INFO] finished tweaking git repo https://github.com/svevang/pipclient-tokenize
[INFO] tweaked toml for git repo https://github.com/svevang/pipclient-tokenize written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/svevang/pipclient-tokenize already has a lockfile, it will not be regenerated
[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] 5bc6367e1d44511dc484f8b29d6bcedd24ef924578e9ba352d6c5b859b8ebe70
[INFO] running `"docker" "start" "-a" "5bc6367e1d44511dc484f8b29d6bcedd24ef924578e9ba352d6c5b859b8ebe70"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling libc v0.2.40
[INFO] [stderr]    Compiling num-traits v0.2.2
[INFO] [stderr]    Compiling cpython v0.2.0 (https://github.com/svevang/rust-cpython.git?branch=feature/python-as-crate#3c4e7274)
[INFO] [stderr]    Compiling memchr v2.0.1
[INFO] [stderr]    Compiling aho-corasick v0.6.4
[INFO] [stderr]    Compiling num-traits v0.1.43
[INFO] [stderr]    Compiling regex v0.2.10
[INFO] [stderr]    Compiling python-sys v0.1.0 (https://github.com/svevang/rust-cpython.git?branch=feature/python-as-crate#3c4e7274)
[INFO] [stderr] error: failed to run custom build command for `python-sys v0.1.0 (https://github.com/svevang/rust-cpython.git?branch=feature/python-as-crate#3c4e7274)`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/build/python-sys-7730e6f477434b4b/build-script-build` (exit code: 1)
[INFO] [stderr] --- stderr
[INFO] [stderr] Downloading Python-3.5.0.tar.xz...
[INFO] [stderr] -> https://www.python.org/ftp/python/3.5.0/Python-3.5.0.tar.xz
[INFO] [stderr] error: failed to download Python-3.5.0.tar.xz
[INFO] [stderr] 
[INFO] [stderr] BUILD FAILED (Ubuntu 20.04 using python-build 20160602)
[INFO] [stderr] 
[INFO] [stderr] 
[INFO] [stderr] 
[INFO] [stderr] python-sys: Error building python. See `cargo clean && cargo build -vv` for more info. 
[INFO] [stderr]  For more detailed help look at https://github.com/pyenv/pyenv/wiki/Common-build-problems 
[INFO] [stderr] 
[INFO] running `"docker" "inspect" "5bc6367e1d44511dc484f8b29d6bcedd24ef924578e9ba352d6c5b859b8ebe70"`
[INFO] running `"docker" "rm" "-f" "5bc6367e1d44511dc484f8b29d6bcedd24ef924578e9ba352d6c5b859b8ebe70"`
[INFO] [stdout] 5bc6367e1d44511dc484f8b29d6bcedd24ef924578e9ba352d6c5b859b8ebe70