[INFO] cloning repository https://github.com/vasily-kirichenko/regex_benchmark
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/vasily-kirichenko/regex_benchmark" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvasily-kirichenko%2Fregex_benchmark", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvasily-kirichenko%2Fregex_benchmark'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7aca2d1a5e38734e9e36f3f0f7cbb4a1fb2b24c0
[INFO] testing vasily-kirichenko/regex_benchmark against beta-2020-10-09 for beta-1.48-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvasily-kirichenko%2Fregex_benchmark" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/vasily-kirichenko/regex_benchmark on toolchain beta-2020-10-09
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/vasily-kirichenko/regex_benchmark
[INFO] finished tweaking git repo https://github.com/vasily-kirichenko/regex_benchmark
[INFO] tweaked toml for git repo https://github.com/vasily-kirichenko/regex_benchmark written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/vasily-kirichenko/regex_benchmark already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded either v1.4.0
[INFO] [stderr]   Downloaded backtrace v0.3.4
[INFO] [stderr]   Downloaded redox_syscall v0.1.32
[INFO] [stderr]   Downloaded regex v0.2.3
[INFO] [stderr]   Downloaded cc v1.0.3
[INFO] [stderr]   Downloaded itertools v0.7.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-10-09" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fe0db9aaf0494bc202f72c90b0c37c63cb994e9c89991c5127100720fd61d2ce
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "fe0db9aaf0494bc202f72c90b0c37c63cb994e9c89991c5127100720fd61d2ce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fe0db9aaf0494bc202f72c90b0c37c63cb994e9c89991c5127100720fd61d2ce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fe0db9aaf0494bc202f72c90b0c37c63cb994e9c89991c5127100720fd61d2ce", kill_on_drop: false }`
[INFO] [stdout] fe0db9aaf0494bc202f72c90b0c37c63cb994e9c89991c5127100720fd61d2ce
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "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" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-10-09" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 54ed656c6c2887067e9f46101d8fe4898bd36d2baab00ae9e56178125accca9f
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "54ed656c6c2887067e9f46101d8fe4898bd36d2baab00ae9e56178125accca9f", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.0.1
[INFO] [stderr]    Compiling itertools v0.7.4
[INFO] [stderr]    Compiling thread_local v0.3.4
[INFO] [stderr]    Compiling backtrace-sys v0.1.16
[INFO] [stderr]    Compiling aho-corasick v0.6.4
[INFO] [stderr]    Compiling backtrace v0.3.4
[INFO] [stderr]    Compiling error-chain v0.11.0
[INFO] [stderr]    Compiling regex v0.2.3
[INFO] [stderr]    Compiling regex_benchmark v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(universal_impl_trait)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Write` is imported redundantly
[INFO] [stdout]   --> src/main.rs:67:13
[INFO] [stdout]    |
[INFO] [stdout] 10 | use std::io::prelude::*;
[INFO] [stdout]    |     ------------------- the item `Write` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 67 |         use std::io::Write;
[INFO] [stdout]    |             ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/main.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 | /     error_chain!{
[INFO] [stdout] 19 | |         foreign_links {
[INFO] [stdout] 20 | |             Io(::std::io::Error);
[INFO] [stdout] 21 | |             Regex(::regex::Error);
[INFO] [stdout] 22 | |         }
[INFO] [stdout] 23 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/main.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 | /     error_chain!{
[INFO] [stdout] 19 | |         foreign_links {
[INFO] [stdout] 20 | |             Io(::std::io::Error);
[INFO] [stdout] 21 | |             Regex(::regex::Error);
[INFO] [stdout] 22 | |         }
[INFO] [stdout] 23 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::cause`: replaced by Error::source, which can support downcasting
[INFO] [stdout]   --> src/main.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 | /     error_chain!{
[INFO] [stdout] 19 | |         foreign_links {
[INFO] [stdout] 20 | |             Io(::std::io::Error);
[INFO] [stdout] 21 | |             Regex(::regex::Error);
[INFO] [stdout] 22 | |         }
[INFO] [stdout] 23 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `regex_benchmark`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "54ed656c6c2887067e9f46101d8fe4898bd36d2baab00ae9e56178125accca9f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "54ed656c6c2887067e9f46101d8fe4898bd36d2baab00ae9e56178125accca9f", kill_on_drop: false }`
[INFO] [stdout] 54ed656c6c2887067e9f46101d8fe4898bd36d2baab00ae9e56178125accca9f
