[INFO] cloning repository https://github.com/ardroh/tcp_impl_in_rust [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ardroh/tcp_impl_in_rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fardroh%2Ftcp_impl_in_rust", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fardroh%2Ftcp_impl_in_rust'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] ab37243b740f78e3f4311586abb99eae49cb1eed [INFO] checking ardroh/tcp_impl_in_rust against master#2c0f4860cc86e2354a55ea04e738848168435c90 for pr-149145 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fardroh%2Ftcp_impl_in_rust" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'... [INFO] [stderr] done. [INFO] started tweaking git repo https://github.com/ardroh/tcp_impl_in_rust [INFO] finished tweaking git repo https://github.com/ardroh/tcp_impl_in_rust [INFO] tweaked toml for git repo https://github.com/ardroh/tcp_impl_in_rust written to /workspace/builds/worker-4-tc1/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/ardroh/tcp_impl_in_rust on toolchain 2c0f4860cc86e2354a55ea04e738848168435c90 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2c0f4860cc86e2354a55ea04e738848168435c90" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate git repo https://github.com/ardroh/tcp_impl_in_rust already has a lockfile, it will not be regenerated [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2c0f4860cc86e2354a55ea04e738848168435c90" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Updating crates.io index [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded parking_lot_core v0.6.3 [INFO] [stderr] Downloaded tun-tap v0.1.4 [INFO] [stderr] Downloaded cc v1.0.96 [INFO] [stderr] Downloaded etherparse v0.14.3 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:94a0c148923f5b2b52a63ef0eeb1882ad339ab61bce784c8077cbe41c61feb6c" "/opt/rustwide/cargo-home/bin/cargo" "+2c0f4860cc86e2354a55ea04e738848168435c90" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 94225901905b70fa38c753b240788af06b46a998075d02179a4d683a1dd2b198 [INFO] running `Command { std: "docker" "start" "-a" "94225901905b70fa38c753b240788af06b46a998075d02179a4d683a1dd2b198", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "94225901905b70fa38c753b240788af06b46a998075d02179a4d683a1dd2b198", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "94225901905b70fa38c753b240788af06b46a998075d02179a4d683a1dd2b198", kill_on_drop: false }` [INFO] [stdout] 94225901905b70fa38c753b240788af06b46a998075d02179a4d683a1dd2b198 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:94a0c148923f5b2b52a63ef0eeb1882ad339ab61bce784c8077cbe41c61feb6c" "/opt/rustwide/cargo-home/bin/cargo" "+2c0f4860cc86e2354a55ea04e738848168435c90" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] f930e708a2096ea711ee92acabff02830d43ab0614344c18b00205a8e53d376d [INFO] running `Command { std: "docker" "start" "-a" "f930e708a2096ea711ee92acabff02830d43ab0614344c18b00205a8e53d376d", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.154 [INFO] [stderr] Compiling crossbeam-utils v0.7.2 [INFO] [stderr] Compiling maybe-uninit v2.0.0 [INFO] [stderr] Checking futures v0.1.31 [INFO] [stderr] Compiling semver-parser v0.7.0 [INFO] [stderr] Compiling slab v0.4.9 [INFO] [stderr] Compiling memoffset v0.5.6 [INFO] [stderr] Checking lock_api v0.3.4 [INFO] [stderr] Compiling semver v0.9.0 [INFO] [stderr] Compiling crossbeam-epoch v0.8.2 [INFO] [stderr] Checking smallvec v0.6.14 [INFO] [stderr] Compiling cc v1.0.96 [INFO] [stderr] Compiling rustc_version v0.2.3 [INFO] [stderr] Checking scoped-tls v0.1.2 [INFO] [stderr] Checking arrayvec v0.7.4 [INFO] [stderr] Compiling parking_lot_core v0.6.3 [INFO] [stderr] Compiling parking_lot v0.9.0 [INFO] [stderr] Checking crossbeam-queue v0.2.3 [INFO] [stderr] Checking etherparse v0.14.3 [INFO] [stderr] Checking iovec v0.1.4 [INFO] [stderr] Checking net2 v0.2.39 [INFO] [stderr] Checking num_cpus v1.16.0 [INFO] [stderr] Checking bytes v0.4.12 [INFO] [stderr] Checking crossbeam-deque v0.7.4 [INFO] [stderr] Checking mio v0.6.23 [INFO] [stderr] Compiling tun-tap v0.1.4 [INFO] [stderr] Checking tokio-executor v0.1.10 [INFO] [stderr] Checking tokio-io v0.1.13 [INFO] [stderr] Checking tokio-sync v0.1.8 [INFO] [stderr] Checking tokio-threadpool v0.1.18 [INFO] [stderr] Checking tokio-timer v0.2.13 [INFO] [stderr] Checking tokio-current-thread v0.1.7 [INFO] [stderr] Checking mio-uds v0.6.8 [INFO] [stderr] Checking tokio-reactor v0.1.12 [INFO] [stderr] Checking tokio-codec v0.1.2 [INFO] [stderr] Checking tokio-fs v0.1.7 [INFO] [stderr] Checking tokio-udp v0.1.6 [INFO] [stderr] Checking tokio-tcp v0.1.4 [INFO] [stderr] Checking tokio-uds v0.2.7 [INFO] [stderr] Checking tokio v0.1.22 [INFO] [stderr] Checking tokio-core v0.1.18 [INFO] [stderr] Checking tcp_impl_in_rust v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unreachable expression [INFO] [stdout] --> src/tcp.rs:38:21 [INFO] [stdout] | [INFO] [stdout] 37 | unimplemented!("seq"), [INFO] [stdout] | --------------------- any code following this expression is unreachable [INFO] [stdout] 38 | unimplemented!("window_size"), [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable expression [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unreachable_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] = note: this warning originates in the macro `$crate::panic::panic_2021` which comes from the expansion of the macro `unimplemented` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `nic` [INFO] [stdout] --> src/tcp.rs:18:9 [INFO] [stdout] | [INFO] [stdout] 18 | nic: &mut tun_tap::Iface, [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_nic` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `ip_hdr` [INFO] [stdout] --> src/tcp.rs:19:9 [INFO] [stdout] | [INFO] [stdout] 19 | ip_hdr: etherparse::Ipv4HeaderSlice<'a>, [INFO] [stdout] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_ip_hdr` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `data` [INFO] [stdout] --> src/tcp.rs:21:9 [INFO] [stdout] | [INFO] [stdout] 21 | 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: `buf` [INFO] [stdout] --> src/tcp.rs:23:13 [INFO] [stdout] | [INFO] [stdout] 23 | let buf = &mut [0u8; 1504]; [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_buf` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `syn_ack` [INFO] [stdout] --> src/tcp.rs:34:21 [INFO] [stdout] | [INFO] [stdout] 34 | let mut syn_ack = etherparse::TcpHeader::new( [INFO] [stdout] | ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_syn_ack` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `ip` [INFO] [stdout] --> src/tcp.rs:42:21 [INFO] [stdout] | [INFO] [stdout] 42 | let ip = etherparse::Ipv4Header::new( [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_ip` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `val` [INFO] [stdout] --> src/tcp.rs:42:26 [INFO] [stdout] | [INFO] [stdout] 42 | let ip = etherparse::Ipv4Header::new( [INFO] [stdout] | __________________________^ [INFO] [stdout] 43 | | syn_ack.header_len_u16(), [INFO] [stdout] 44 | | 64, [INFO] [stdout] 45 | | ip_hdr.protocol(), [INFO] [stdout] ... | [INFO] [stdout] 57 | | ], [INFO] [stdout] 58 | | )?; [INFO] [stdout] | |__________________^ help: if this is intentional, prefix it with an underscore: `_val` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `unwritten` [INFO] [stdout] --> src/tcp.rs:59:21 [INFO] [stdout] | [INFO] [stdout] 59 | let unwritten = { [INFO] [stdout] | ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_unwritten` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `unwritten` [INFO] [stdout] --> src/tcp.rs:60:25 [INFO] [stdout] | [INFO] [stdout] 60 | let mut unwritten = &mut buf[..]; [INFO] [stdout] | ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_unwritten` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `val` [INFO] [stdout] --> src/tcp.rs:61:21 [INFO] [stdout] | [INFO] [stdout] 61 | ip.write(&mut unwritten)?; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_val` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `val` [INFO] [stdout] --> src/tcp.rs:62:21 [INFO] [stdout] | [INFO] [stdout] 62 | syn_ack.write(&mut unwritten)?; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_val` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `send_bytes` [INFO] [stdout] --> src/tcp.rs:65:21 [INFO] [stdout] | [INFO] [stdout] 65 | let send_bytes = nic.send(&buf[..unwritten])?; [INFO] [stdout] | ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_send_bytes` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `val` [INFO] [stdout] --> src/tcp.rs:65:34 [INFO] [stdout] | [INFO] [stdout] 65 | let send_bytes = nic.send(&buf[..unwritten])?; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_val` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant `Closed` is never constructed [INFO] [stdout] --> src/tcp.rs:3:5 [INFO] [stdout] | [INFO] [stdout] 2 | pub(crate) enum State { [INFO] [stdout] | ----- variant in this enum [INFO] [stdout] 3 | Closed, [INFO] [stdout] | ^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `State` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unreachable expression [INFO] [stdout] --> src/tcp.rs:38:21 [INFO] [stdout] | [INFO] [stdout] 37 | unimplemented!("seq"), [INFO] [stdout] | --------------------- any code following this expression is unreachable [INFO] [stdout] 38 | unimplemented!("window_size"), [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable expression [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unreachable_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] = note: this warning originates in the macro `$crate::panic::panic_2021` which comes from the expansion of the macro `unimplemented` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `nic` [INFO] [stdout] --> src/tcp.rs:18:9 [INFO] [stdout] | [INFO] [stdout] 18 | nic: &mut tun_tap::Iface, [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_nic` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `ip_hdr` [INFO] [stdout] --> src/tcp.rs:19:9 [INFO] [stdout] | [INFO] [stdout] 19 | ip_hdr: etherparse::Ipv4HeaderSlice<'a>, [INFO] [stdout] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_ip_hdr` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `data` [INFO] [stdout] --> src/tcp.rs:21:9 [INFO] [stdout] | [INFO] [stdout] 21 | 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: `buf` [INFO] [stdout] --> src/tcp.rs:23:13 [INFO] [stdout] | [INFO] [stdout] 23 | let buf = &mut [0u8; 1504]; [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_buf` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `syn_ack` [INFO] [stdout] --> src/tcp.rs:34:21 [INFO] [stdout] | [INFO] [stdout] 34 | let mut syn_ack = etherparse::TcpHeader::new( [INFO] [stdout] | ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_syn_ack` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `ip` [INFO] [stdout] --> src/tcp.rs:42:21 [INFO] [stdout] | [INFO] [stdout] 42 | let ip = etherparse::Ipv4Header::new( [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_ip` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `val` [INFO] [stdout] --> src/tcp.rs:42:26 [INFO] [stdout] | [INFO] [stdout] 42 | let ip = etherparse::Ipv4Header::new( [INFO] [stdout] | __________________________^ [INFO] [stdout] 43 | | syn_ack.header_len_u16(), [INFO] [stdout] 44 | | 64, [INFO] [stdout] 45 | | ip_hdr.protocol(), [INFO] [stdout] ... | [INFO] [stdout] 57 | | ], [INFO] [stdout] 58 | | )?; [INFO] [stdout] | |__________________^ help: if this is intentional, prefix it with an underscore: `_val` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `unwritten` [INFO] [stdout] --> src/tcp.rs:59:21 [INFO] [stdout] | [INFO] [stdout] 59 | let unwritten = { [INFO] [stdout] | ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_unwritten` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `unwritten` [INFO] [stdout] --> src/tcp.rs:60:25 [INFO] [stdout] | [INFO] [stdout] 60 | let mut unwritten = &mut buf[..]; [INFO] [stdout] | ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_unwritten` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `val` [INFO] [stdout] --> src/tcp.rs:61:21 [INFO] [stdout] | [INFO] [stdout] 61 | ip.write(&mut unwritten)?; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_val` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `val` [INFO] [stdout] --> src/tcp.rs:62:21 [INFO] [stdout] | [INFO] [stdout] 62 | syn_ack.write(&mut unwritten)?; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_val` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `send_bytes` [INFO] [stdout] --> src/tcp.rs:65:21 [INFO] [stdout] | [INFO] [stdout] 65 | let send_bytes = nic.send(&buf[..unwritten])?; [INFO] [stdout] | ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_send_bytes` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `val` [INFO] [stdout] --> src/tcp.rs:65:34 [INFO] [stdout] | [INFO] [stdout] 65 | let send_bytes = nic.send(&buf[..unwritten])?; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_val` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant `Closed` is never constructed [INFO] [stdout] --> src/tcp.rs:3:5 [INFO] [stdout] | [INFO] [stdout] 2 | pub(crate) enum State { [INFO] [stdout] | ----- variant in this enum [INFO] [stdout] 3 | Closed, [INFO] [stdout] | ^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `State` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 12.43s [INFO] running `Command { std: "docker" "inspect" "f930e708a2096ea711ee92acabff02830d43ab0614344c18b00205a8e53d376d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "f930e708a2096ea711ee92acabff02830d43ab0614344c18b00205a8e53d376d", kill_on_drop: false }` [INFO] [stdout] f930e708a2096ea711ee92acabff02830d43ab0614344c18b00205a8e53d376d