[INFO] cloning repository https://github.com/G0ldenSp00n/rust-scratch-tcp-web-server
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/G0ldenSp00n/rust-scratch-tcp-web-server" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FG0ldenSp00n%2Frust-scratch-tcp-web-server", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FG0ldenSp00n%2Frust-scratch-tcp-web-server'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7dc544112318d67f3a5abe59fffe150b992f72ec
[INFO] checking G0ldenSp00n/rust-scratch-tcp-web-server against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FG0ldenSp00n%2Frust-scratch-tcp-web-server" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/G0ldenSp00n/rust-scratch-tcp-web-server on toolchain ceab6128fa48a616bfd3e3adf4bc80133b8ee223
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/G0ldenSp00n/rust-scratch-tcp-web-server
[INFO] finished tweaking git repo https://github.com/G0ldenSp00n/rust-scratch-tcp-web-server
[INFO] tweaked toml for git repo https://github.com/G0ldenSp00n/rust-scratch-tcp-web-server written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/G0ldenSp00n/rust-scratch-tcp-web-server 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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a1a4ef7dbe80dda12869d1f924c8717fa3456f58a8668121c2940c23b78b6509
[INFO] running `Command { std: "docker" "start" "-a" "a1a4ef7dbe80dda12869d1f924c8717fa3456f58a8668121c2940c23b78b6509", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a1a4ef7dbe80dda12869d1f924c8717fa3456f58a8668121c2940c23b78b6509", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a1a4ef7dbe80dda12869d1f924c8717fa3456f58a8668121c2940c23b78b6509", kill_on_drop: false }`
[INFO] [stdout] a1a4ef7dbe80dda12869d1f924c8717fa3456f58a8668121c2940c23b78b6509
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6654cf92b4398b85247bbc812d4eda40fc7d1a5244feb7d100f59ab0cfba8d22
[INFO] running `Command { std: "docker" "start" "-a" "6654cf92b4398b85247bbc812d4eda40fc7d1a5244feb7d100f59ab0cfba8d22", kill_on_drop: false }`
[INFO] [stderr]     Checking web-server v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `content` is never read
[INFO] [stdout]   --> src/request.rs:27:9
[INFO] [stdout]    |
[INFO] [stdout] 25 | pub struct Request<'a> {
[INFO] [stdout]    |            ------- field in this struct
[INFO] [stdout] 26 |     pub method: Method<'a>,
[INFO] [stdout] 27 |     pub content: String,
[INFO] [stdout]    |         ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Request` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `content` is never read
[INFO] [stdout]   --> src/request.rs:27:9
[INFO] [stdout]    |
[INFO] [stdout] 25 | pub struct Request<'a> {
[INFO] [stdout]    |            ------- field in this struct
[INFO] [stdout] 26 |     pub method: Method<'a>,
[INFO] [stdout] 27 |     pub content: String,
[INFO] [stdout]    |         ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Request` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `None` is never constructed
[INFO] [stdout]  --> src/result.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub enum Content<'a> {
[INFO] [stdout]   |          ------- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 6 |     None,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `None` is never constructed
[INFO] [stdout]  --> src/result.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub enum Content<'a> {
[INFO] [stdout]   |          ------- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 6 |     None,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `BadRequest` and `ServerError` are never constructed
[INFO] [stdout]   --> src/result.rs:37:5
[INFO] [stdout]    |
[INFO] [stdout] 35 | pub enum ResponseCode {
[INFO] [stdout]    |          ------------ variants in this enum
[INFO] [stdout] 36 |     Success,
[INFO] [stdout] 37 |     BadRequest,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 38 |     ServerError,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `BadRequest` and `ServerError` are never constructed
[INFO] [stdout]   --> src/result.rs:37:5
[INFO] [stdout]    |
[INFO] [stdout] 35 | pub enum ResponseCode {
[INFO] [stdout]    |          ------------ variants in this enum
[INFO] [stdout] 36 |     Success,
[INFO] [stdout] 37 |     BadRequest,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 38 |     ServerError,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.07s
[INFO] running `Command { std: "docker" "inspect" "6654cf92b4398b85247bbc812d4eda40fc7d1a5244feb7d100f59ab0cfba8d22", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6654cf92b4398b85247bbc812d4eda40fc7d1a5244feb7d100f59ab0cfba8d22", kill_on_drop: false }`
[INFO] [stdout] 6654cf92b4398b85247bbc812d4eda40fc7d1a5244feb7d100f59ab0cfba8d22
[INFO] checking G0ldenSp00n/rust-scratch-tcp-web-server against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FG0ldenSp00n%2Frust-scratch-tcp-web-server" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/G0ldenSp00n/rust-scratch-tcp-web-server on toolchain 3a4bc97f6385a3aa300a4fd689b44350e54fd676
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/G0ldenSp00n/rust-scratch-tcp-web-server
[INFO] finished tweaking git repo https://github.com/G0ldenSp00n/rust-scratch-tcp-web-server
[INFO] tweaked toml for git repo https://github.com/G0ldenSp00n/rust-scratch-tcp-web-server written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/G0ldenSp00n/rust-scratch-tcp-web-server 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" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ba1a79c9a1d03b9a7d1f841e71af2a4f5af971f0f08e624403111d1ff3db865b
[INFO] running `Command { std: "docker" "start" "-a" "ba1a79c9a1d03b9a7d1f841e71af2a4f5af971f0f08e624403111d1ff3db865b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ba1a79c9a1d03b9a7d1f841e71af2a4f5af971f0f08e624403111d1ff3db865b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ba1a79c9a1d03b9a7d1f841e71af2a4f5af971f0f08e624403111d1ff3db865b", kill_on_drop: false }`
[INFO] [stdout] ba1a79c9a1d03b9a7d1f841e71af2a4f5af971f0f08e624403111d1ff3db865b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 402c90a178c0a7ff64437489ce12861df6e1aeabe689af56d1015f361f37e986
[INFO] running `Command { std: "docker" "start" "-a" "402c90a178c0a7ff64437489ce12861df6e1aeabe689af56d1015f361f37e986", kill_on_drop: false }`
[INFO] [stderr]     Checking web-server v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0283]: type annotations needed
[INFO] [stdout]   --> src/server.rs:48:27
[INFO] [stdout]    |
[INFO] [stdout] 48 |             thread::spawn(move || {
[INFO] [stdout]    |                           ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: cannot satisfy `_: Send`
[INFO] [stdout] note: required by a bound in `spawn`
[INFO] [stdout]   --> /rustc/3a4bc97f6385a3aa300a4fd689b44350e54fd676/library/std/src/thread/mod.rs:672:1
[INFO] [stdout] help: try giving this closure an explicit return type
[INFO] [stdout]    |
[INFO] [stdout] 48 |             thread::spawn(move || -> /* Type */ {
[INFO] [stdout]    |                                   +++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0283]: type annotations needed
[INFO] [stdout]   --> src/server.rs:48:27
[INFO] [stdout]    |
[INFO] [stdout] 48 |             thread::spawn(move || {
[INFO] [stdout]    |                           ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: cannot satisfy `_: Send`
[INFO] [stdout] note: required by a bound in `spawn`
[INFO] [stdout]   --> /rustc/3a4bc97f6385a3aa300a4fd689b44350e54fd676/library/std/src/thread/mod.rs:672:1
[INFO] [stdout] help: try giving this closure an explicit return type
[INFO] [stdout]    |
[INFO] [stdout] 48 |             thread::spawn(move || -> /* Type */ {
[INFO] [stdout]    |                                   +++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0283`.
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0283`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `web-server` (bin "web-server") due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `web-server` (bin "web-server" test) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "402c90a178c0a7ff64437489ce12861df6e1aeabe689af56d1015f361f37e986", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "402c90a178c0a7ff64437489ce12861df6e1aeabe689af56d1015f361f37e986", kill_on_drop: false }`
[INFO] [stdout] 402c90a178c0a7ff64437489ce12861df6e1aeabe689af56d1015f361f37e986