[INFO] updating cached repository https://github.com/supr/whois
[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] f75b5620ead1cfb72f8158032d11b5021b5174d5
[INFO] checking supr/whois against try#1a608893c03d7722effeb0058e82770bd36b4b3c for pr-66504-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsupr%2Fwhois" "/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/supr/whois on toolchain 1a608893c03d7722effeb0058e82770bd36b4b3c
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1a608893c03d7722effeb0058e82770bd36b4b3c" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/supr/whois
[INFO] finished tweaking git repo https://github.com/supr/whois
[INFO] tweaked toml for git repo https://github.com/supr/whois written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/supr/whois already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1a608893c03d7722effeb0058e82770bd36b4b3c" "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=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" "/opt/rustwide/cargo-home/bin/cargo" "+1a608893c03d7722effeb0058e82770bd36b4b3c" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 8374830a2aa129940b0ce61f74b9403f92d4a4dac22b1ae18c678d271fc32cdc
[INFO] running `"docker" "start" "-a" "8374830a2aa129940b0ce61f74b9403f92d4a4dac22b1ae18c678d271fc32cdc"`
[INFO] [stderr]    Compiling syn v1.0.8
[INFO] [stderr]     Checking parking_lot_core v0.6.2
[INFO] [stderr]     Checking rustyline v5.0.4
[INFO] [stderr]     Checking crossbeam-epoch v0.8.0
[INFO] [stderr]     Checking parking_lot v0.9.0
[INFO] [stderr]     Checking crossbeam-deque v0.7.2
[INFO] [stderr]    Compiling tracing-attributes v0.1.5
[INFO] [stderr]    Compiling pin-project-internal v0.4.5
[INFO] [stderr]    Compiling tokio-macros v0.2.0-alpha.6
[INFO] [stderr]     Checking tracing v0.1.10
[INFO] [stderr]     Checking pin-project v0.4.5
[INFO] [stderr]     Checking tokio-executor v0.2.0-alpha.6
[INFO] [stderr]     Checking tokio-io v0.2.0-alpha.6
[INFO] [stderr]     Checking tokio-codec v0.2.0-alpha.6
[INFO] [stderr]     Checking tokio-fs v0.2.0-alpha.6
[INFO] [stderr]     Checking tokio-net v0.2.0-alpha.6
[INFO] [stderr]     Checking tokio-timer v0.3.0-alpha.6
[INFO] [stderr]     Checking tokio v0.2.0-alpha.6
[INFO] [stderr]     Checking whois v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:36:17
[INFO] [stderr]    |
[INFO] [stderr] 36 |                 rdr.read_to_string(&mut out).await;
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:77:25
[INFO] [stderr]    |
[INFO] [stderr] 77 | /                         match cmd {
[INFO] [stderr] 78 | |                             "quit" | "QUIT" | "q" | "Q" => break,
[INFO] [stderr] 79 | |                             _ => rt.block_on(wc.query(cmd)),
[INFO] [stderr] 80 | |                         };
[INFO] [stderr]    | |__________________________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:36:17
[INFO] [stderr]    |
[INFO] [stderr] 36 |                 rdr.read_to_string(&mut out).await;
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:77:25
[INFO] [stderr]    |
[INFO] [stderr] 77 | /                         match cmd {
[INFO] [stderr] 78 | |                             "quit" | "QUIT" | "q" | "Q" => break,
[INFO] [stderr] 79 | |                             _ => rt.block_on(wc.query(cmd)),
[INFO] [stderr] 80 | |                         };
[INFO] [stderr]    | |__________________________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 09s
[INFO] running `"docker" "inspect" "8374830a2aa129940b0ce61f74b9403f92d4a4dac22b1ae18c678d271fc32cdc"`
[INFO] running `"docker" "rm" "-f" "8374830a2aa129940b0ce61f74b9403f92d4a4dac22b1ae18c678d271fc32cdc"`
[INFO] [stdout] 8374830a2aa129940b0ce61f74b9403f92d4a4dac22b1ae18c678d271fc32cdc