[INFO] fetching crate zenscan 0.1.3...
[INFO] checking zenscan-0.1.3 against try#c8bdaa84ec1b37f18f30375e196a65b7602f3790 for pr-73345
[INFO] extracting crate zenscan 0.1.3 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate zenscan 0.1.3 on toolchain c8bdaa84ec1b37f18f30375e196a65b7602f3790
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c8bdaa84ec1b37f18f30375e196a65b7602f3790" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate zenscan 0.1.3
[INFO] finished tweaking crates.io crate zenscan 0.1.3
[INFO] tweaked toml for crates.io crate zenscan 0.1.3 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate crates.io crate zenscan 0.1.3 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c8bdaa84ec1b37f18f30375e196a65b7602f3790" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:6c9ffe128752d56c8d75334ed354142a5229917ed99767f56566dd8e857ad726" "/opt/rustwide/cargo-home/bin/cargo" "+c8bdaa84ec1b37f18f30375e196a65b7602f3790" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b392543c23e5b11d97fa55e44031d7ef5c7d9c43f2a9d22dca8f7b6e725079bb
[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" "b392543c23e5b11d97fa55e44031d7ef5c7d9c43f2a9d22dca8f7b6e725079bb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b392543c23e5b11d97fa55e44031d7ef5c7d9c43f2a9d22dca8f7b6e725079bb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b392543c23e5b11d97fa55e44031d7ef5c7d9c43f2a9d22dca8f7b6e725079bb", kill_on_drop: false }`
[INFO] [stdout] b392543c23e5b11d97fa55e44031d7ef5c7d9c43f2a9d22dca8f7b6e725079bb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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=forbid" "-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@sha256:6c9ffe128752d56c8d75334ed354142a5229917ed99767f56566dd8e857ad726" "/opt/rustwide/cargo-home/bin/cargo" "+c8bdaa84ec1b37f18f30375e196a65b7602f3790" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ae47bda5c91cd0d985da92abace679fb76d06b0ac82e74030d38ebd3d59d8d4d
[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" "ae47bda5c91cd0d985da92abace679fb76d06b0ac82e74030d38ebd3d59d8d4d", kill_on_drop: false }`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling unicode-xid v0.0.3
[INFO] [stderr]    Compiling bitflags v0.5.0
[INFO] [stderr]    Compiling regex-syntax v0.6.18
[INFO] [stderr]     Checking pnet_base v0.26.0
[INFO] [stderr]    Compiling rayon-core v1.7.0
[INFO] [stderr]    Compiling pnet v0.26.0
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking vec_map v0.8.2
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]    Compiling thread_local v1.0.1
[INFO] [stderr]    Compiling syntex_pos v0.42.0
[INFO] [stderr]    Compiling libc v0.2.71
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]     Checking pnet_sys v0.26.0
[INFO] [stderr]     Checking termios v0.3.2
[INFO] [stderr]     Checking clicolors-control v1.0.1
[INFO] [stderr]     Checking socket2 v0.3.12
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking backtrace v0.3.48
[INFO] [stderr]     Checking ipnetwork v0.16.0
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]     Checking pnet_macros_support v0.26.0
[INFO] [stderr]     Checking crossbeam-queue v0.2.2
[INFO] [stderr]     Checking console v0.9.2
[INFO] [stderr]     Checking clap v2.33.1
[INFO] [stderr]     Checking dns-lookup v1.0.3
[INFO] [stderr]    Compiling aho-corasick v0.7.10
[INFO] [stderr]     Checking pnet_datalink v0.26.0
[INFO] [stderr]    Compiling log v0.3.9
[INFO] [stderr]     Checking better-panic v0.2.0
[INFO] [stderr]    Compiling syntex_errors v0.42.0
[INFO] [stderr]     Checking rayon v1.3.0
[INFO] [stderr]    Compiling syntex_syntax v0.42.0
[INFO] [stderr]    Compiling regex v1.3.9
[INFO] [stderr]    Compiling syntex v0.42.2
[INFO] [stderr]    Compiling pnet_macros v0.26.0
[INFO] [stderr]    Compiling pnet_packet v0.26.0
[INFO] [stderr]     Checking pnet_transport v0.26.0
[INFO] [stderr]     Checking zenscan v0.1.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `host` is never read
[INFO] [stdout]   --> src/main.rs:63:26
[INFO] [stdout]    |
[INFO] [stdout] 63 |     let mut ip = ""; let mut host = ""; 
[INFO] [stdout]    |                          ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `host` is never read
[INFO] [stdout]   --> src/main.rs:63:26
[INFO] [stdout]    |
[INFO] [stdout] 63 |     let mut ip = ""; let mut host = ""; 
[INFO] [stdout]    |                          ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[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 1m 06s
[INFO] running `Command { std: "docker" "inspect" "ae47bda5c91cd0d985da92abace679fb76d06b0ac82e74030d38ebd3d59d8d4d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ae47bda5c91cd0d985da92abace679fb76d06b0ac82e74030d38ebd3d59d8d4d", kill_on_drop: false }`
[INFO] [stdout] ae47bda5c91cd0d985da92abace679fb76d06b0ac82e74030d38ebd3d59d8d4d