[INFO] fetching crate pcre 0.2.3...
[INFO] checking pcre-0.2.3 against beta for pr-78714
[INFO] extracting crate pcre 0.2.3 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate pcre 0.2.3 on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate pcre 0.2.3
[INFO] removed path dependency libpcre-sys from crates.io crate pcre 0.2.3
[INFO] finished tweaking crates.io crate pcre 0.2.3
[INFO] tweaked toml for crates.io crate pcre 0.2.3 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fbc12762629f9104da0af0033ace960ad998b83cae5244ec88536c3de9c0bd12
[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" "fbc12762629f9104da0af0033ace960ad998b83cae5244ec88536c3de9c0bd12", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fbc12762629f9104da0af0033ace960ad998b83cae5244ec88536c3de9c0bd12", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fbc12762629f9104da0af0033ace960ad998b83cae5244ec88536c3de9c0bd12", kill_on_drop: false }`
[INFO] [stdout] fbc12762629f9104da0af0033ace960ad998b83cae5244ec88536c3de9c0bd12
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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=forbid" "-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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 16d020ea12f19e109122a0644d08fc2a88276ca0a0752675935af9a28fb088ee
[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" "16d020ea12f19e109122a0644d08fc2a88276ca0a0752675935af9a28fb088ee", kill_on_drop: false }`
[INFO] [stderr]     Checking enum-set v0.0.8
[INFO] [stderr]    Compiling bzip2-sys v0.1.9+1.0.8
[INFO] [stderr]    Compiling bzip2 v0.3.3
[INFO] [stderr]    Compiling libpcre-sys v0.2.2
[INFO] [stderr]     Checking pcre v0.2.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]    --> src/detail/mod.rs:103:9
[INFO] [stdout]     |
[INFO] [stdout] 99  | /         match String::from_utf8(Vec::from(err_cstr.to_bytes())) {
[INFO] [stdout] 100 | |             Err(_) => panic!("pcre_study() failed"),
[INFO] [stdout] 101 | |             Ok(err_str) => panic!("pcre_study() failed: {}", err_str)
[INFO] [stdout] 102 | |         }
[INFO] [stdout]     | |_________- any code following this `match` expression is unreachable, as all arms diverge
[INFO] [stdout] 103 |           panic!("pcre_study");
[INFO] [stdout]     |           ^^^^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` 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: unreachable statement
[INFO] [stdout]    --> src/detail/mod.rs:103:9
[INFO] [stdout]     |
[INFO] [stdout] 99  | /         match String::from_utf8(Vec::from(err_cstr.to_bytes())) {
[INFO] [stdout] 100 | |             Err(_) => panic!("pcre_study() failed"),
[INFO] [stdout] 101 | |             Ok(err_str) => panic!("pcre_study() failed: {}", err_str)
[INFO] [stdout] 102 | |         }
[INFO] [stdout]     | |_________- any code following this `match` expression is unreachable, as all arms diverge
[INFO] [stdout] 103 |           panic!("pcre_study");
[INFO] [stdout]     |           ^^^^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` 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: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.96s
[INFO] running `Command { std: "docker" "inspect" "16d020ea12f19e109122a0644d08fc2a88276ca0a0752675935af9a28fb088ee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "16d020ea12f19e109122a0644d08fc2a88276ca0a0752675935af9a28fb088ee", kill_on_drop: false }`
[INFO] [stdout] 16d020ea12f19e109122a0644d08fc2a88276ca0a0752675935af9a28fb088ee