[INFO] updating cached repository povilasb/rust-tuntap
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/povilasb/rust-tuntap
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/povilasb/rust-tuntap" "work/ex/pr-61100/sources/master#8869ee03d7f258e1b76a11c6fbb01b5708a9f504/gh/povilasb/rust-tuntap"`
[INFO] [stderr] Cloning into 'work/ex/pr-61100/sources/master#8869ee03d7f258e1b76a11c6fbb01b5708a9f504/gh/povilasb/rust-tuntap'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/povilasb/rust-tuntap" "work/ex/pr-61100/sources/try#58b21121d0b447ceb3f1a655155d802191acf044/gh/povilasb/rust-tuntap"`
[INFO] [stderr] Cloning into 'work/ex/pr-61100/sources/try#58b21121d0b447ceb3f1a655155d802191acf044/gh/povilasb/rust-tuntap'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] a458bf0812edde9ddf273189636a0f2cd62630e3
[INFO] sha for GitHub repo povilasb/rust-tuntap: a458bf0812edde9ddf273189636a0f2cd62630e3
[INFO] validating manifest of povilasb/rust-tuntap on toolchain master#8869ee03d7f258e1b76a11c6fbb01b5708a9f504
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+8869ee03d7f258e1b76a11c6fbb01b5708a9f504-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of povilasb/rust-tuntap on toolchain try#58b21121d0b447ceb3f1a655155d802191acf044
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+58b21121d0b447ceb3f1a655155d802191acf044-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing povilasb/rust-tuntap
[INFO] finished frobbing povilasb/rust-tuntap
[INFO] frobbed toml for povilasb/rust-tuntap written to work/ex/pr-61100/sources/master#8869ee03d7f258e1b76a11c6fbb01b5708a9f504/gh/povilasb/rust-tuntap/Cargo.toml
[INFO] started frobbing povilasb/rust-tuntap
[INFO] finished frobbing povilasb/rust-tuntap
[INFO] frobbed toml for povilasb/rust-tuntap written to work/ex/pr-61100/sources/try#58b21121d0b447ceb3f1a655155d802191acf044/gh/povilasb/rust-tuntap/Cargo.toml
[INFO] crate povilasb/rust-tuntap already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+8869ee03d7f258e1b76a11c6fbb01b5708a9f504-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+58b21121d0b447ceb3f1a655155d802191acf044-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] checking povilasb/rust-tuntap against try#58b21121d0b447ceb3f1a655155d802191acf044 for pr-61100
[INFO] running `"docker" "create" "-v" "/mnt/crater-raid/crater/work/local/target-dirs/pr-61100/worker-4/try#58b21121d0b447ceb3f1a655155d802191acf044:/opt/crater/target:rw,Z" "-v" "/mnt/crater-raid/crater/work/ex/pr-61100/sources/try#58b21121d0b447ceb3f1a655155d802191acf044/gh/povilasb/rust-tuntap:/opt/crater/workdir:ro,Z" "-v" "/mnt/crater-raid/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/crater-raid/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+58b21121d0b447ceb3f1a655155d802191acf044-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] eb91e08c37b0c4b057d526555196f3289afd2dd7da58e3b10425441703ecd096
[INFO] running `"docker" "start" "-a" "eb91e08c37b0c4b057d526555196f3289afd2dd7da58e3b10425441703ecd096"`
[INFO] [stderr]     Checking nix v0.8.1
[INFO] [stderr]     Checking vpn v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: field is never used: `addresses`
[INFO] [stderr]   --> src/tuntap.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 14 |     addresses: String,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Tap`
[INFO] [stderr]   --> src/tuntap.rs:79:5
[INFO] [stderr]    |
[INFO] [stderr] 79 |     Tap = 2,
[INFO] [stderr]    |     ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `addresses`
[INFO] [stderr]   --> src/tuntap.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 14 |     addresses: String,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 |     io::stdin().read_line(&mut ln);
[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: variant is never constructed: `Tap`
[INFO] [stderr]   --> src/tuntap.rs:79:5
[INFO] [stderr]    |
[INFO] [stderr] 79 |     Tap = 2,
[INFO] [stderr]    |     ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/tuntap.rs:29:9
[INFO] [stderr]    |
[INFO] [stderr] 29 |         create_vnet_device(fid, dev_name);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: denote infinite loops with `loop { ... }`
[INFO] [stderr]   --> src/tuntap.rs:43:9
[INFO] [stderr]    |
[INFO] [stderr] 43 |         while true {
[INFO] [stderr]    |         ^^^^^^^^^^ help: use `loop`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(while_true)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 |     io::stdin().read_line(&mut ln);
[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/tuntap.rs:29:9
[INFO] [stderr]    |
[INFO] [stderr] 29 |         create_vnet_device(fid, dev_name);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: denote infinite loops with `loop { ... }`
[INFO] [stderr]   --> src/tuntap.rs:43:9
[INFO] [stderr]    |
[INFO] [stderr] 43 |         while true {
[INFO] [stderr]    |         ^^^^^^^^^^ help: use `loop`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(while_true)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.97s
[INFO] running `"docker" "inspect" "eb91e08c37b0c4b057d526555196f3289afd2dd7da58e3b10425441703ecd096"`
[INFO] running `"docker" "rm" "-f" "eb91e08c37b0c4b057d526555196f3289afd2dd7da58e3b10425441703ecd096"`
[INFO] [stdout] eb91e08c37b0c4b057d526555196f3289afd2dd7da58e3b10425441703ecd096