[INFO] cloning repository https://github.com/ianmat55/simple_rusty_server
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ianmat55/simple_rusty_server" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fianmat55%2Fsimple_rusty_server", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fianmat55%2Fsimple_rusty_server'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 07502c7869e6bba76faec0d4ce26ddef956b084f
[INFO] checking ianmat55/simple_rusty_server against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fianmat55%2Fsimple_rusty_server" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ianmat55/simple_rusty_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/ianmat55/simple_rusty_server
[INFO] finished tweaking git repo https://github.com/ianmat55/simple_rusty_server
[INFO] tweaked toml for git repo https://github.com/ianmat55/simple_rusty_server written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/ianmat55/simple_rusty_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-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] d0beb7358f63051dca8ff1741bee606c649a2bb986218bc10016a8cd7a54d760
[INFO] running `Command { std: "docker" "start" "-a" "d0beb7358f63051dca8ff1741bee606c649a2bb986218bc10016a8cd7a54d760", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d0beb7358f63051dca8ff1741bee606c649a2bb986218bc10016a8cd7a54d760", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d0beb7358f63051dca8ff1741bee606c649a2bb986218bc10016a8cd7a54d760", kill_on_drop: false }`
[INFO] [stdout] d0beb7358f63051dca8ff1741bee606c649a2bb986218bc10016a8cd7a54d760
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] cecf542c4ce6f927d541fbb1a582c87bbf7a154099a53de9564ccd878733ec0c
[INFO] running `Command { std: "docker" "start" "-a" "cecf542c4ce6f927d541fbb1a582c87bbf7a154099a53de9564ccd878733ec0c", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.69
[INFO] [stderr]    Compiling libc v0.2.150
[INFO] [stderr]    Compiling unicode-ident v1.0.12
[INFO] [stderr]    Compiling serde v1.0.193
[INFO] [stderr]     Checking ppv-lite86 v0.2.17
[INFO] [stderr]    Compiling serde_json v1.0.108
[INFO] [stderr]     Checking ryu v1.0.15
[INFO] [stderr]     Checking itoa v1.0.9
[INFO] [stderr]    Compiling quote v1.0.33
[INFO] [stderr]    Compiling syn v2.0.39
[INFO] [stderr]     Checking getrandom v0.2.11
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]    Compiling serde_derive v1.0.193
[INFO] [stderr]     Checking simple_rusty_server v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.10s
[INFO] running `Command { std: "docker" "inspect" "cecf542c4ce6f927d541fbb1a582c87bbf7a154099a53de9564ccd878733ec0c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cecf542c4ce6f927d541fbb1a582c87bbf7a154099a53de9564ccd878733ec0c", kill_on_drop: false }`
[INFO] [stdout] cecf542c4ce6f927d541fbb1a582c87bbf7a154099a53de9564ccd878733ec0c
[INFO] checking ianmat55/simple_rusty_server against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fianmat55%2Fsimple_rusty_server" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ianmat55/simple_rusty_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/ianmat55/simple_rusty_server
[INFO] finished tweaking git repo https://github.com/ianmat55/simple_rusty_server
[INFO] tweaked toml for git repo https://github.com/ianmat55/simple_rusty_server written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/ianmat55/simple_rusty_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-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] e429293b758217c901166639f52ecd00e796fa8b08dd414ca9c52b16a5a5582f
[INFO] running `Command { std: "docker" "start" "-a" "e429293b758217c901166639f52ecd00e796fa8b08dd414ca9c52b16a5a5582f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e429293b758217c901166639f52ecd00e796fa8b08dd414ca9c52b16a5a5582f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e429293b758217c901166639f52ecd00e796fa8b08dd414ca9c52b16a5a5582f", kill_on_drop: false }`
[INFO] [stdout] e429293b758217c901166639f52ecd00e796fa8b08dd414ca9c52b16a5a5582f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 2c79d9617dc3e76a29d908225590602fd4c778f16fa1519009953b40b0ecc9fb
[INFO] running `Command { std: "docker" "start" "-a" "2c79d9617dc3e76a29d908225590602fd4c778f16fa1519009953b40b0ecc9fb", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.69
[INFO] [stderr]    Compiling libc v0.2.150
[INFO] [stderr]    Compiling unicode-ident v1.0.12
[INFO] [stderr]    Compiling serde v1.0.193
[INFO] [stderr]    Compiling serde_json v1.0.108
[INFO] [stderr]     Checking ppv-lite86 v0.2.17
[INFO] [stderr]     Checking ryu v1.0.15
[INFO] [stderr]     Checking itoa v1.0.9
[INFO] [stderr]    Compiling quote v1.0.33
[INFO] [stderr]     Checking getrandom v0.2.11
[INFO] [stderr]    Compiling syn v2.0.39
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]    Compiling serde_derive v1.0.193
[INFO] [stderr]     Checking simple_rusty_server v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0284]: type annotations needed: cannot satisfy `_ -> _`
[INFO] [stdout]    --> src/http.rs:111:13
[INFO] [stdout]     |
[INFO] [stdout] 111 | /             if let Some(data) = &req.data {
[INFO] [stdout] 112 | |                 let cleaned_json = trim_null_bytes(data);
[INFO] [stdout] 113 | |      
[INFO] [stdout] 114 | |                 let body = match serde_json::from_str::<ClientGuess>(&cleaned_json) {
[INFO] [stdout] ...   |
[INFO] [stdout] 132 | |                 return build_internal_server_error();
[INFO] [stdout] 133 | |             }
[INFO] [stdout]     | |_____________^ cannot satisfy `_ -> _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0284]: type annotations needed: cannot satisfy `_ -> _`
[INFO] [stdout]    --> src/http.rs:111:13
[INFO] [stdout]     |
[INFO] [stdout] 111 | /             if let Some(data) = &req.data {
[INFO] [stdout] 112 | |                 let cleaned_json = trim_null_bytes(data);
[INFO] [stdout] 113 | |      
[INFO] [stdout] 114 | |                 let body = match serde_json::from_str::<ClientGuess>(&cleaned_json) {
[INFO] [stdout] ...   |
[INFO] [stdout] 132 | |                 return build_internal_server_error();
[INFO] [stdout] 133 | |             }
[INFO] [stdout]     | |_____________^ cannot satisfy `_ -> _`
[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 E0284`.
[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 E0284`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `simple_rusty_server` (bin "simple_rusty_server" test) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `simple_rusty_server` (bin "simple_rusty_server") due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "2c79d9617dc3e76a29d908225590602fd4c778f16fa1519009953b40b0ecc9fb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2c79d9617dc3e76a29d908225590602fd4c778f16fa1519009953b40b0ecc9fb", kill_on_drop: false }`
[INFO] [stdout] 2c79d9617dc3e76a29d908225590602fd4c778f16fa1519009953b40b0ecc9fb