[INFO] cloning repository https://github.com/jessym/rust-tcp-from-scratch [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jessym/rust-tcp-from-scratch" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjessym%2Frust-tcp-from-scratch", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjessym%2Frust-tcp-from-scratch'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] cfa5e306a56d24d4936ecffce120256827ec4d68 [INFO] checking jessym/rust-tcp-from-scratch against master#2c0f4860cc86e2354a55ea04e738848168435c90 for pr-149145 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjessym%2Frust-tcp-from-scratch" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'... [INFO] [stderr] done. [INFO] started tweaking git repo https://github.com/jessym/rust-tcp-from-scratch [INFO] finished tweaking git repo https://github.com/jessym/rust-tcp-from-scratch [INFO] tweaked toml for git repo https://github.com/jessym/rust-tcp-from-scratch written to /workspace/builds/worker-5-tc1/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/jessym/rust-tcp-from-scratch 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/jessym/rust-tcp-from-scratch 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] Updating crates.io index [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded tokio-reactor v0.1.12 [INFO] [stderr] Downloaded tun-tap v0.1.4 [INFO] [stderr] Downloaded crossbeam-utils v0.7.2 [INFO] [stderr] Downloaded tokio-sync v0.1.8 [INFO] [stderr] Downloaded tokio-timer v0.2.13 [INFO] [stderr] Downloaded tokio-current-thread v0.1.7 [INFO] [stderr] Downloaded tokio-fs v0.1.7 [INFO] [stderr] Downloaded arrayvec v0.7.4 [INFO] [stderr] Downloaded crossbeam-deque v0.7.4 [INFO] [stderr] Downloaded tokio-threadpool v0.1.18 [INFO] [stderr] Downloaded tokio-core v0.1.18 [INFO] [stderr] Downloaded tokio v0.1.22 [INFO] [stderr] Downloaded parking_lot_core v0.6.3 [INFO] [stderr] Downloaded mio v0.6.23 [INFO] [stderr] Downloaded futures v0.1.31 [INFO] [stderr] Downloaded net2 v0.2.39 [INFO] [stderr] Downloaded parking_lot v0.9.0 [INFO] [stderr] Downloaded bytes v0.4.12 [INFO] [stderr] Downloaded scoped-tls v0.1.2 [INFO] [stderr] Downloaded crossbeam-epoch v0.8.2 [INFO] [stderr] Downloaded kernel32-sys v0.2.2 [INFO] [stderr] Downloaded lock_api v0.3.4 [INFO] [stderr] Downloaded tokio-tcp v0.1.4 [INFO] [stderr] Downloaded tokio-codec v0.1.2 [INFO] [stderr] Downloaded winapi v0.2.8 [INFO] [stderr] Downloaded winapi-build v0.1.1 [INFO] [stderr] Downloaded ws2_32-sys v0.2.1 [INFO] [stderr] Downloaded miow v0.2.2 [INFO] [stderr] Downloaded iovec v0.1.4 [INFO] [stderr] Downloaded tokio-io v0.1.13 [INFO] [stderr] Downloaded memoffset v0.5.6 [INFO] [stderr] Downloaded etherparse v0.14.3 [INFO] [stderr] Downloaded crossbeam-queue v0.2.3 [INFO] [stderr] Downloaded tokio-udp v0.1.6 [INFO] [stderr] Downloaded mio-uds v0.6.8 [INFO] [stderr] Downloaded tokio-uds v0.2.7 [INFO] [stderr] Downloaded tokio-executor v0.1.10 [INFO] [stderr] Downloaded libc v0.2.150 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 5cd51c9967235072ed17222a9adfcf15ae10ec8ceab470c700f58b7b32d0a785 [INFO] running `Command { std: "docker" "start" "-a" "5cd51c9967235072ed17222a9adfcf15ae10ec8ceab470c700f58b7b32d0a785", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "5cd51c9967235072ed17222a9adfcf15ae10ec8ceab470c700f58b7b32d0a785", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "5cd51c9967235072ed17222a9adfcf15ae10ec8ceab470c700f58b7b32d0a785", kill_on_drop: false }` [INFO] [stdout] 5cd51c9967235072ed17222a9adfcf15ae10ec8ceab470c700f58b7b32d0a785 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 8eaf93c0c8a217800761776ad8133e09f7fdfce853b6d4a1064ebe22cdf4ef47 [INFO] running `Command { std: "docker" "start" "-a" "8eaf93c0c8a217800761776ad8133e09f7fdfce853b6d4a1064ebe22cdf4ef47", kill_on_drop: false }` [INFO] [stderr] Compiling autocfg v1.1.0 [INFO] [stderr] Checking cfg-if v0.1.10 [INFO] [stderr] Compiling libc v0.2.150 [INFO] [stderr] Compiling maybe-uninit v2.0.0 [INFO] [stderr] Checking lazy_static v1.4.0 [INFO] [stderr] Compiling semver-parser v0.7.0 [INFO] [stderr] Checking futures v0.1.31 [INFO] [stderr] Checking log v0.4.20 [INFO] [stderr] Checking byteorder v1.5.0 [INFO] [stderr] Checking scoped-tls v0.1.2 [INFO] [stderr] Checking arrayvec v0.7.4 [INFO] [stderr] Checking lock_api v0.3.4 [INFO] [stderr] Compiling semver v0.9.0 [INFO] [stderr] Compiling crossbeam-utils v0.7.2 [INFO] [stderr] Compiling slab v0.4.9 [INFO] [stderr] Compiling memoffset v0.5.6 [INFO] [stderr] Compiling crossbeam-epoch v0.8.2 [INFO] [stderr] Compiling rustc_version v0.2.3 [INFO] [stderr] Checking smallvec v0.6.14 [INFO] [stderr] Checking etherparse v0.14.3 [INFO] [stderr] Compiling parking_lot_core v0.6.3 [INFO] [stderr] Compiling parking_lot v0.9.0 [INFO] [stderr] Checking tokio-sync v0.1.8 [INFO] [stderr] Checking tokio-executor v0.1.10 [INFO] [stderr] Checking crossbeam-queue v0.2.3 [INFO] [stderr] Checking tokio-timer v0.2.13 [INFO] [stderr] Checking tokio-current-thread v0.1.7 [INFO] [stderr] Checking crossbeam-deque v0.7.4 [INFO] [stderr] Compiling cc v1.0.83 [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 tokio-threadpool v0.1.18 [INFO] [stderr] Checking mio v0.6.23 [INFO] [stderr] Checking tokio-io v0.1.13 [INFO] [stderr] Checking tokio-codec v0.1.2 [INFO] [stderr] Checking tokio-fs v0.1.7 [INFO] [stderr] Compiling tun-tap v0.1.4 [INFO] [stderr] Checking tokio-reactor v0.1.12 [INFO] [stderr] Checking mio-uds v0.6.8 [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 rust-tcp-from-scratch v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unreachable expression [INFO] [stdout] --> src/tcp.rs:70:21 [INFO] [stdout] | [INFO] [stdout] 69 | todo!(), [INFO] [stdout] | ------- any code following this expression is unreachable [INFO] [stdout] 70 | todo!(), [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 `todo` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unreachable expression [INFO] [stdout] --> src/tcp.rs:78:21 [INFO] [stdout] | [INFO] [stdout] 77 | todo!(), [INFO] [stdout] | ------- any code following this expression is unreachable [INFO] [stdout] 78 | IpNumber::TCP, [INFO] [stdout] | ^^^^^^^^^^^^^ unreachable expression [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/tcp.rs:48:13 [INFO] [stdout] | [INFO] [stdout] 48 | let mut buffer = [0u8; 1500]; [INFO] [stdout] | ----^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `interface` [INFO] [stdout] --> src/tcp.rs:29:9 [INFO] [stdout] | [INFO] [stdout] 29 | interface: &Iface, [INFO] [stdout] | ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_interface` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `buffer` [INFO] [stdout] --> src/tcp.rs:48:13 [INFO] [stdout] | [INFO] [stdout] 48 | let mut buffer = [0u8; 1500]; [INFO] [stdout] | ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_buffer` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `tcp_response` [INFO] [stdout] --> src/tcp.rs:66:21 [INFO] [stdout] | [INFO] [stdout] 66 | let mut tcp_response = TcpHeader::new( [INFO] [stdout] | ^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_tcp_response` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `ip_response` [INFO] [stdout] --> src/tcp.rs:75:21 [INFO] [stdout] | [INFO] [stdout] 75 | let mut ip_response = Ipv4Header::new( [INFO] [stdout] | ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_ip_response` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `unwritten` [INFO] [stdout] --> src/tcp.rs:84:21 [INFO] [stdout] | [INFO] [stdout] 84 | let mut unwritten = &mut buffer[..]; [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:85:17 [INFO] [stdout] | [INFO] [stdout] 85 | ip_response.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:86:17 [INFO] [stdout] | [INFO] [stdout] 86 | tcp_response.write(&mut unwritten)?; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_val` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variants `Closed`, `SynRcvd`, and `Estab` are never constructed [INFO] [stdout] --> src/tcp.rs:7:5 [INFO] [stdout] | [INFO] [stdout] 6 | enum State { [INFO] [stdout] | ----- variants in this enum [INFO] [stdout] 7 | Closed, [INFO] [stdout] | ^^^^^^ [INFO] [stdout] 8 | Listen, [INFO] [stdout] 9 | SynRcvd, [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] 10 | Estab, [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `State` has a derived impl for the trait `Debug`, but this is 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:70:21 [INFO] [stdout] | [INFO] [stdout] 69 | todo!(), [INFO] [stdout] | ------- any code following this expression is unreachable [INFO] [stdout] 70 | todo!(), [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 `todo` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unreachable expression [INFO] [stdout] --> src/tcp.rs:78:21 [INFO] [stdout] | [INFO] [stdout] 77 | todo!(), [INFO] [stdout] | ------- any code following this expression is unreachable [INFO] [stdout] 78 | IpNumber::TCP, [INFO] [stdout] | ^^^^^^^^^^^^^ unreachable expression [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/tcp.rs:48:13 [INFO] [stdout] | [INFO] [stdout] 48 | let mut buffer = [0u8; 1500]; [INFO] [stdout] | ----^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `interface` [INFO] [stdout] --> src/tcp.rs:29:9 [INFO] [stdout] | [INFO] [stdout] 29 | interface: &Iface, [INFO] [stdout] | ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_interface` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `buffer` [INFO] [stdout] --> src/tcp.rs:48:13 [INFO] [stdout] | [INFO] [stdout] 48 | let mut buffer = [0u8; 1500]; [INFO] [stdout] | ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_buffer` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `tcp_response` [INFO] [stdout] --> src/tcp.rs:66:21 [INFO] [stdout] | [INFO] [stdout] 66 | let mut tcp_response = TcpHeader::new( [INFO] [stdout] | ^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_tcp_response` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `ip_response` [INFO] [stdout] --> src/tcp.rs:75:21 [INFO] [stdout] | [INFO] [stdout] 75 | let mut ip_response = Ipv4Header::new( [INFO] [stdout] | ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_ip_response` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `unwritten` [INFO] [stdout] --> src/tcp.rs:84:21 [INFO] [stdout] | [INFO] [stdout] 84 | let mut unwritten = &mut buffer[..]; [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:85:17 [INFO] [stdout] | [INFO] [stdout] 85 | ip_response.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:86:17 [INFO] [stdout] | [INFO] [stdout] 86 | tcp_response.write(&mut unwritten)?; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_val` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variants `Closed`, `SynRcvd`, and `Estab` are never constructed [INFO] [stdout] --> src/tcp.rs:7:5 [INFO] [stdout] | [INFO] [stdout] 6 | enum State { [INFO] [stdout] | ----- variants in this enum [INFO] [stdout] 7 | Closed, [INFO] [stdout] | ^^^^^^ [INFO] [stdout] 8 | Listen, [INFO] [stdout] 9 | SynRcvd, [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] 10 | Estab, [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `State` has a derived impl for the trait `Debug`, but this is 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 8.15s [INFO] running `Command { std: "docker" "inspect" "8eaf93c0c8a217800761776ad8133e09f7fdfce853b6d4a1064ebe22cdf4ef47", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "8eaf93c0c8a217800761776ad8133e09f7fdfce853b6d4a1064ebe22cdf4ef47", kill_on_drop: false }` [INFO] [stdout] 8eaf93c0c8a217800761776ad8133e09f7fdfce853b6d4a1064ebe22cdf4ef47