[INFO] cloning repository https://github.com/sidebog7/tcpr
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/sidebog7/tcpr" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsidebog7%2Ftcpr", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsidebog7%2Ftcpr'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 59efd43ae424179f48e5b516408f887c8de25966
[INFO] testing sidebog7/tcpr against beta-2020-07-24 for beta-1.46-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsidebog7%2Ftcpr" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/sidebog7/tcpr on toolchain beta-2020-07-24
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/sidebog7/tcpr
[INFO] finished tweaking git repo https://github.com/sidebog7/tcpr
[INFO] tweaked toml for git repo https://github.com/sidebog7/tcpr written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/sidebog7/tcpr already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded etherparse v0.8.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 6de2dde449f99bdaaf2f4295cc5a69b7eccaed475512d82cb9430a1785bc3e4e
[INFO] running `Command { std: "docker" "start" "-a" "6de2dde449f99bdaaf2f4295cc5a69b7eccaed475512d82cb9430a1785bc3e4e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6de2dde449f99bdaaf2f4295cc5a69b7eccaed475512d82cb9430a1785bc3e4e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6de2dde449f99bdaaf2f4295cc5a69b7eccaed475512d82cb9430a1785bc3e4e", kill_on_drop: false }`
[INFO] [stdout] 6de2dde449f99bdaaf2f4295cc5a69b7eccaed475512d82cb9430a1785bc3e4e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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=warn" "-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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8fa9cd2f0d0d319bdab74e1e11d4afdcf37f78cf1d9e35b799d161f2a3409650
[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" "8fa9cd2f0d0d319bdab74e1e11d4afdcf37f78cf1d9e35b799d161f2a3409650", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.50
[INFO] [stderr]    Compiling lazy_static v1.3.0
[INFO] [stderr]    Compiling futures v0.1.25
[INFO] [stderr]    Compiling smallvec v0.6.9
[INFO] [stderr]    Compiling cc v1.0.31
[INFO] [stderr]    Compiling owning_ref v0.4.0
[INFO] [stderr]    Compiling parking_lot_core v0.4.0
[INFO] [stderr]    Compiling etherparse v0.8.0
[INFO] [stderr]    Compiling crossbeam-utils v0.6.5
[INFO] [stderr]    Compiling tokio-trace-core v0.1.0
[INFO] [stderr]    Compiling lock_api v0.1.5
[INFO] [stderr]    Compiling crossbeam-epoch v0.7.1
[INFO] [stderr]    Compiling crossbeam-queue v0.1.2
[INFO] [stderr]    Compiling crossbeam-deque v0.7.1
[INFO] [stderr]    Compiling iovec v0.1.2
[INFO] [stderr]    Compiling rand_os v0.1.3
[INFO] [stderr]    Compiling num_cpus v1.10.0
[INFO] [stderr]    Compiling net2 v0.2.33
[INFO] [stderr]    Compiling tun-tap v0.1.2
[INFO] [stderr]    Compiling bytes v0.4.12
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling mio v0.6.16
[INFO] [stderr]    Compiling tokio-executor v0.1.6
[INFO] [stderr]    Compiling tokio-io v0.1.12
[INFO] [stderr]    Compiling tokio-sync v0.1.4
[INFO] [stderr]    Compiling tokio-current-thread v0.1.5
[INFO] [stderr]    Compiling tokio-timer v0.2.10
[INFO] [stderr]    Compiling mio-uds v0.6.7
[INFO] [stderr]    Compiling tokio-codec v0.1.1
[INFO] [stderr]    Compiling tokio-threadpool v0.1.12
[INFO] [stderr]    Compiling parking_lot v0.7.1
[INFO] [stderr]    Compiling tokio-reactor v0.1.9
[INFO] [stderr]    Compiling tokio-fs v0.1.6
[INFO] [stderr]    Compiling tokio-udp v0.1.3
[INFO] [stderr]    Compiling tokio-uds v0.2.5
[INFO] [stderr]    Compiling tokio-tcp v0.1.3
[INFO] [stderr]    Compiling tokio v0.1.17
[INFO] [stderr]    Compiling tokio-core v0.1.17
[INFO] [stderr]    Compiling tcpr v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]   --> src/main.rs:65:17
[INFO] [stdout]    |
[INFO] [stdout] 65 |             Err(e) => {}
[INFO] [stdout]    |                 ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `data`
[INFO] [stdout]   --> src/tcp.rs:48:9
[INFO] [stdout]    |
[INFO] [stdout] 48 |         data: &'a [u8],
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_data`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `nic`
[INFO] [stdout]    --> src/tcp.rs:128:9
[INFO] [stdout]     |
[INFO] [stdout] 128 |         nic: &mut tun_tap::Iface,
[INFO] [stdout]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_nic`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `iph`
[INFO] [stdout]    --> src/tcp.rs:129:9
[INFO] [stdout]     |
[INFO] [stdout] 129 |         iph: etherparse::Ipv4HeaderSlice<'a>,
[INFO] [stdout]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_iph`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tcph`
[INFO] [stdout]    --> src/tcp.rs:130:9
[INFO] [stdout]     |
[INFO] [stdout] 130 |         tcph: etherparse::TcpHeaderSlice<'a>,
[INFO] [stdout]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_tcph`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `data`
[INFO] [stdout]    --> src/tcp.rs:131:9
[INFO] [stdout]     |
[INFO] [stdout] 131 |         data: &'a [u8],
[INFO] [stdout]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_data`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Established`
[INFO] [stdout]  --> src/tcp.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     Established,
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `state`
[INFO] [stdout]  --> src/tcp.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     state: State,
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `una`
[INFO] [stdout]   --> src/tcp.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 |     una: u32,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `nxt`
[INFO] [stdout]   --> src/tcp.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 19 |     nxt: u32,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `up`
[INFO] [stdout]   --> src/tcp.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 23 |     up: bool,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `wl1`
[INFO] [stdout]   --> src/tcp.rs:25:5
[INFO] [stdout]    |
[INFO] [stdout] 25 |     wl1: usize,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `wl2`
[INFO] [stdout]   --> src/tcp.rs:27:5
[INFO] [stdout]    |
[INFO] [stdout] 27 |     wl2: usize,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `wnd`
[INFO] [stdout]   --> src/tcp.rs:36:5
[INFO] [stdout]    |
[INFO] [stdout] 36 |     wnd: u16,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `up`
[INFO] [stdout]   --> src/tcp.rs:38:5
[INFO] [stdout]    |
[INFO] [stdout] 38 |     up: bool,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `irs`
[INFO] [stdout]   --> src/tcp.rs:40:5
[INFO] [stdout]    |
[INFO] [stdout] 40 |     irs: u32,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/tcp.rs:116:13
[INFO] [stdout]     |
[INFO] [stdout] 116 |             conn.iph.write(&mut unwritten);
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/tcp.rs:117:13
[INFO] [stdout]     |
[INFO] [stdout] 117 |             syn_ack.write(&mut unwritten);
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 18 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 27.46s
[INFO] running `Command { std: "docker" "inspect" "8fa9cd2f0d0d319bdab74e1e11d4afdcf37f78cf1d9e35b799d161f2a3409650", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8fa9cd2f0d0d319bdab74e1e11d4afdcf37f78cf1d9e35b799d161f2a3409650", kill_on_drop: false }`
[INFO] [stdout] 8fa9cd2f0d0d319bdab74e1e11d4afdcf37f78cf1d9e35b799d161f2a3409650
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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=warn" "-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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 46f4cbb88d44d8822261a41e2d52578e6a8d7879995af5e2b460a6155d1f9dfa
[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" "46f4cbb88d44d8822261a41e2d52578e6a8d7879995af5e2b460a6155d1f9dfa", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling tcpr v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]   --> src/main.rs:65:17
[INFO] [stdout]    |
[INFO] [stdout] 65 |             Err(e) => {}
[INFO] [stdout]    |                 ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `data`
[INFO] [stdout]   --> src/tcp.rs:48:9
[INFO] [stdout]    |
[INFO] [stdout] 48 |         data: &'a [u8],
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_data`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `nic`
[INFO] [stdout]    --> src/tcp.rs:128:9
[INFO] [stdout]     |
[INFO] [stdout] 128 |         nic: &mut tun_tap::Iface,
[INFO] [stdout]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_nic`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `iph`
[INFO] [stdout]    --> src/tcp.rs:129:9
[INFO] [stdout]     |
[INFO] [stdout] 129 |         iph: etherparse::Ipv4HeaderSlice<'a>,
[INFO] [stdout]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_iph`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tcph`
[INFO] [stdout]    --> src/tcp.rs:130:9
[INFO] [stdout]     |
[INFO] [stdout] 130 |         tcph: etherparse::TcpHeaderSlice<'a>,
[INFO] [stdout]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_tcph`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `data`
[INFO] [stdout]    --> src/tcp.rs:131:9
[INFO] [stdout]     |
[INFO] [stdout] 131 |         data: &'a [u8],
[INFO] [stdout]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_data`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Established`
[INFO] [stdout]  --> src/tcp.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     Established,
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `state`
[INFO] [stdout]  --> src/tcp.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     state: State,
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `una`
[INFO] [stdout]   --> src/tcp.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 |     una: u32,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `nxt`
[INFO] [stdout]   --> src/tcp.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 19 |     nxt: u32,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `up`
[INFO] [stdout]   --> src/tcp.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 23 |     up: bool,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `wl1`
[INFO] [stdout]   --> src/tcp.rs:25:5
[INFO] [stdout]    |
[INFO] [stdout] 25 |     wl1: usize,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `wl2`
[INFO] [stdout]   --> src/tcp.rs:27:5
[INFO] [stdout]    |
[INFO] [stdout] 27 |     wl2: usize,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `wnd`
[INFO] [stdout]   --> src/tcp.rs:36:5
[INFO] [stdout]    |
[INFO] [stdout] 36 |     wnd: u16,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `up`
[INFO] [stdout]   --> src/tcp.rs:38:5
[INFO] [stdout]    |
[INFO] [stdout] 38 |     up: bool,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `irs`
[INFO] [stdout]   --> src/tcp.rs:40:5
[INFO] [stdout]    |
[INFO] [stdout] 40 |     irs: u32,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/tcp.rs:116:13
[INFO] [stdout]     |
[INFO] [stdout] 116 |             conn.iph.write(&mut unwritten);
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/tcp.rs:117:13
[INFO] [stdout]     |
[INFO] [stdout] 117 |             syn_ack.write(&mut unwritten);
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 18 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 5.95s
[INFO] running `Command { std: "docker" "inspect" "46f4cbb88d44d8822261a41e2d52578e6a8d7879995af5e2b460a6155d1f9dfa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "46f4cbb88d44d8822261a41e2d52578e6a8d7879995af5e2b460a6155d1f9dfa", kill_on_drop: false }`
[INFO] [stdout] 46f4cbb88d44d8822261a41e2d52578e6a8d7879995af5e2b460a6155d1f9dfa
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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=warn" "-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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] cd205745b96f6ec2656202d61bc824ed60fc189219b32a43f9fab4f75e5c800a
[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" "cd205745b96f6ec2656202d61bc824ed60fc189219b32a43f9fab4f75e5c800a", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr] warning: unused variable: `e`
[INFO] [stdout] running 0 tests
[INFO] [stderr]   --> src/main.rs:65:17
[INFO] [stdout] 
[INFO] [stderr]    |
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stderr] 65 |             Err(e) => {}
[INFO] [stdout] 
[INFO] [stderr]    |                 ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `data`
[INFO] [stderr]   --> src/tcp.rs:48:9
[INFO] [stderr]    |
[INFO] [stderr] 48 |         data: &'a [u8],
[INFO] [stderr]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_data`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `nic`
[INFO] [stderr]    --> src/tcp.rs:128:9
[INFO] [stderr]     |
[INFO] [stderr] 128 |         nic: &mut tun_tap::Iface,
[INFO] [stderr]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_nic`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `iph`
[INFO] [stderr]    --> src/tcp.rs:129:9
[INFO] [stderr]     |
[INFO] [stderr] 129 |         iph: etherparse::Ipv4HeaderSlice<'a>,
[INFO] [stderr]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_iph`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `tcph`
[INFO] [stderr]    --> src/tcp.rs:130:9
[INFO] [stderr]     |
[INFO] [stderr] 130 |         tcph: etherparse::TcpHeaderSlice<'a>,
[INFO] [stderr]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_tcph`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `data`
[INFO] [stderr]    --> src/tcp.rs:131:9
[INFO] [stderr]     |
[INFO] [stderr] 131 |         data: &'a [u8],
[INFO] [stderr]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_data`
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Established`
[INFO] [stderr]  --> src/tcp.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 |     Established,
[INFO] [stderr]   |     ^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `state`
[INFO] [stderr]  --> src/tcp.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 |     state: State,
[INFO] [stderr]   |     ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `una`
[INFO] [stderr]   --> src/tcp.rs:17:5
[INFO] [stderr]    |
[INFO] [stderr] 17 |     una: u32,
[INFO] [stderr]    |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `nxt`
[INFO] [stderr]   --> src/tcp.rs:19:5
[INFO] [stderr]    |
[INFO] [stderr] 19 |     nxt: u32,
[INFO] [stderr]    |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `up`
[INFO] [stderr]   --> src/tcp.rs:23:5
[INFO] [stderr]    |
[INFO] [stderr] 23 |     up: bool,
[INFO] [stderr]    |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `wl1`
[INFO] [stderr]   --> src/tcp.rs:25:5
[INFO] [stderr]    |
[INFO] [stderr] 25 |     wl1: usize,
[INFO] [stderr]    |     ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `wl2`
[INFO] [stderr]   --> src/tcp.rs:27:5
[INFO] [stderr]    |
[INFO] [stderr] 27 |     wl2: usize,
[INFO] [stderr]    |     ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `wnd`
[INFO] [stderr]   --> src/tcp.rs:36:5
[INFO] [stderr]    |
[INFO] [stderr] 36 |     wnd: u16,
[INFO] [stderr]    |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `up`
[INFO] [stderr]   --> src/tcp.rs:38:5
[INFO] [stderr]    |
[INFO] [stderr] 38 |     up: bool,
[INFO] [stderr]    |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `irs`
[INFO] [stderr]   --> src/tcp.rs:40:5
[INFO] [stderr]    |
[INFO] [stderr] 40 |     irs: u32,
[INFO] [stderr]    |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/tcp.rs:116:13
[INFO] [stderr]     |
[INFO] [stderr] 116 |             conn.iph.write(&mut unwritten);
[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/tcp.rs:117:13
[INFO] [stderr]     |
[INFO] [stderr] 117 |             syn_ack.write(&mut unwritten);
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: 18 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.11s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/tcpr-ca43c12382f45b5a
[INFO] running `Command { std: "docker" "inspect" "cd205745b96f6ec2656202d61bc824ed60fc189219b32a43f9fab4f75e5c800a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cd205745b96f6ec2656202d61bc824ed60fc189219b32a43f9fab4f75e5c800a", kill_on_drop: false }`
[INFO] [stdout] cd205745b96f6ec2656202d61bc824ed60fc189219b32a43f9fab4f75e5c800a