[INFO] cloning repository https://github.com/hiroshimashu/simple-tcp-udp [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/hiroshimashu/simple-tcp-udp" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhiroshimashu%2Fsimple-tcp-udp", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhiroshimashu%2Fsimple-tcp-udp'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 6798236fb4375eb37e69398c208de2c4681cf9b0 [INFO] checking hiroshimashu/simple-tcp-udp against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhiroshimashu%2Fsimple-tcp-udp" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/hiroshimashu/simple-tcp-udp on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/hiroshimashu/simple-tcp-udp [INFO] finished tweaking git repo https://github.com/hiroshimashu/simple-tcp-udp [INFO] tweaked toml for git repo https://github.com/hiroshimashu/simple-tcp-udp written to /workspace/builds/worker-6-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/hiroshimashu/simple-tcp-udp 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded rustc-demangle v0.1.17 [INFO] [stderr] Downloaded aho-corasick v0.7.14 [INFO] [stderr] Downloaded syn v1.0.44 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 3c54a9688a7db9733c9de96a800f96614172264c42fd101c646567b92cb38a80 [INFO] running `Command { std: "docker" "start" "-a" "3c54a9688a7db9733c9de96a800f96614172264c42fd101c646567b92cb38a80", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "3c54a9688a7db9733c9de96a800f96614172264c42fd101c646567b92cb38a80", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "3c54a9688a7db9733c9de96a800f96614172264c42fd101c646567b92cb38a80", kill_on_drop: false }` [INFO] [stdout] 3c54a9688a7db9733c9de96a800f96614172264c42fd101c646567b92cb38a80 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 4c59f713fc7afe8b61b6b6eccc217b8b73e71655dedccc090bf40c0d4fc9a9e1 [INFO] running `Command { std: "docker" "start" "-a" "4c59f713fc7afe8b61b6b6eccc217b8b73e71655dedccc090bf40c0d4fc9a9e1", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.79 [INFO] [stderr] Compiling syn v1.0.44 [INFO] [stderr] Compiling log v0.4.11 [INFO] [stderr] Checking gimli v0.22.0 [INFO] [stderr] Checking adler v0.2.3 [INFO] [stderr] Compiling failure_derive v0.1.8 [INFO] [stderr] Checking object v0.21.1 [INFO] [stderr] Checking rustc-demangle v0.1.17 [INFO] [stderr] Compiling miniz_oxide v0.4.3 [INFO] [stderr] Checking regex-syntax v0.6.20 [INFO] [stderr] Checking humantime v1.3.0 [INFO] [stderr] Checking termcolor v1.1.0 [INFO] [stderr] Compiling quote v1.0.7 [INFO] [stderr] Checking aho-corasick v0.7.14 [INFO] [stderr] Checking atty v0.2.14 [INFO] [stderr] Checking regex v1.4.1 [INFO] [stderr] Checking env_logger v0.6.2 [INFO] [stderr] Checking addr2line v0.13.0 [INFO] [stderr] Checking backtrace v0.3.53 [INFO] [stderr] Compiling synstructure v0.12.4 [INFO] [stderr] Checking failure v0.1.8 [INFO] [stderr] Checking network_programming_in_rust v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused import: `std::env` [INFO] [stdout] --> src/main.rs:1:5 [INFO] [stdout] | [INFO] [stdout] 1 | use std::env; [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `#[macro_use]` import [INFO] [stdout] --> src/main.rs:3:1 [INFO] [stdout] | [INFO] [stdout] 3 | #[macro_use] [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::env` [INFO] [stdout] --> src/main.rs:1:5 [INFO] [stdout] | [INFO] [stdout] 1 | use std::env; [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `#[macro_use]` import [INFO] [stdout] --> src/main.rs:3:1 [INFO] [stdout] | [INFO] [stdout] 3 | #[macro_use] [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `main` is never used [INFO] [stdout] --> src/tcp_client.rs:1:4 [INFO] [stdout] | [INFO] [stdout] 1 | fn main() {} [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `main` is never used [INFO] [stdout] --> src/tcp_server.rs:1:4 [INFO] [stdout] | [INFO] [stdout] 1 | fn main() {} [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `main` is never used [INFO] [stdout] --> src/udp_client.rs:1:4 [INFO] [stdout] | [INFO] [stdout] 1 | fn main() {} [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `main` is never used [INFO] [stdout] --> src/tcp_client.rs:1:4 [INFO] [stdout] | [INFO] [stdout] 1 | fn main() {} [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `main` is never used [INFO] [stdout] --> src/tcp_server.rs:1:4 [INFO] [stdout] | [INFO] [stdout] 1 | fn main() {} [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `main` is never used [INFO] [stdout] --> src/udp_client.rs:1:4 [INFO] [stdout] | [INFO] [stdout] 1 | fn main() {} [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `main` is never used [INFO] [stdout] --> src/udp_server.rs:1:4 [INFO] [stdout] | [INFO] [stdout] 1 | fn main() {} [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `main` is never used [INFO] [stdout] --> src/udp_server.rs:1:4 [INFO] [stdout] | [INFO] [stdout] 1 | fn main() {} [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 6 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 6 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.80s [INFO] running `Command { std: "docker" "inspect" "4c59f713fc7afe8b61b6b6eccc217b8b73e71655dedccc090bf40c0d4fc9a9e1", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "4c59f713fc7afe8b61b6b6eccc217b8b73e71655dedccc090bf40c0d4fc9a9e1", kill_on_drop: false }` [INFO] [stdout] 4c59f713fc7afe8b61b6b6eccc217b8b73e71655dedccc090bf40c0d4fc9a9e1 [INFO] checking hiroshimashu/simple-tcp-udp against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhiroshimashu%2Fsimple-tcp-udp" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/hiroshimashu/simple-tcp-udp on toolchain 645bb72776a6a56a1a8f52631a44bd082b2ba509 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/hiroshimashu/simple-tcp-udp [INFO] finished tweaking git repo https://github.com/hiroshimashu/simple-tcp-udp [INFO] tweaked toml for git repo https://github.com/hiroshimashu/simple-tcp-udp written to /workspace/builds/worker-6-tc2/source/Cargo.toml [INFO] crate git repo https://github.com/hiroshimashu/simple-tcp-udp 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" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 75a27576d77ecd075c5cdd764070384610364aa2474f7af76974f5a6abf67323 [INFO] running `Command { std: "docker" "start" "-a" "75a27576d77ecd075c5cdd764070384610364aa2474f7af76974f5a6abf67323", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "75a27576d77ecd075c5cdd764070384610364aa2474f7af76974f5a6abf67323", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "75a27576d77ecd075c5cdd764070384610364aa2474f7af76974f5a6abf67323", kill_on_drop: false }` [INFO] [stdout] 75a27576d77ecd075c5cdd764070384610364aa2474f7af76974f5a6abf67323 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 5cfd17bdfa940051c763fb71fb9100d4b7001c5d03a330e354a2bb3c987e1f99 [INFO] running `Command { std: "docker" "start" "-a" "5cfd17bdfa940051c763fb71fb9100d4b7001c5d03a330e354a2bb3c987e1f99", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.79 [INFO] [stderr] Compiling syn v1.0.44 [INFO] [stderr] Compiling quote v1.0.7 [INFO] [stderr] Compiling log v0.4.11 [INFO] [stderr] Checking gimli v0.22.0 [INFO] [stderr] Checking adler v0.2.3 [INFO] [stderr] Compiling failure_derive v0.1.8 [INFO] [stderr] Checking regex-syntax v0.6.20 [INFO] [stderr] Checking rustc-demangle v0.1.17 [INFO] [stderr] Checking object v0.21.1 [INFO] [stderr] Compiling miniz_oxide v0.4.3 [INFO] [stderr] Checking humantime v1.3.0 [INFO] [stderr] Checking termcolor v1.1.0 [INFO] [stderr] Checking aho-corasick v0.7.14 [INFO] [stderr] Checking atty v0.2.14 [INFO] [stderr] Checking regex v1.4.1 [INFO] [stderr] Checking addr2line v0.13.0 [INFO] [stderr] Checking backtrace v0.3.53 [INFO] [stderr] Compiling synstructure v0.12.4 [INFO] [stderr] Checking env_logger v0.6.2 [INFO] [stderr] Checking failure v0.1.8 [INFO] [stderr] Checking network_programming_in_rust v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused import: `std::env` [INFO] [stdout] --> src/main.rs:1:5 [INFO] [stdout] | [INFO] [stdout] 1 | use std::env; [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `#[macro_use]` import [INFO] [stdout] --> src/main.rs:3:1 [INFO] [stdout] | [INFO] [stdout] 3 | #[macro_use] [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `main` is never used [INFO] [stdout] --> src/tcp_client.rs:1:4 [INFO] [stdout] | [INFO] [stdout] 1 | fn main() {} [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `main` is never used [INFO] [stdout] --> src/tcp_server.rs:1:4 [INFO] [stdout] | [INFO] [stdout] 1 | fn main() {} [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `main` is never used [INFO] [stdout] --> src/udp_client.rs:1:4 [INFO] [stdout] | [INFO] [stdout] 1 | fn main() {} [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `main` is never used [INFO] [stdout] --> src/udp_server.rs:1:4 [INFO] [stdout] | [INFO] [stdout] 1 | fn main() {} [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::env` [INFO] [stdout] --> src/main.rs:1:5 [INFO] [stdout] | [INFO] [stdout] 1 | use std::env; [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `#[macro_use]` import [INFO] [stdout] --> src/main.rs:3:1 [INFO] [stdout] | [INFO] [stdout] 3 | #[macro_use] [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `main` is never used [INFO] [stdout] --> src/tcp_client.rs:1:4 [INFO] [stdout] | [INFO] [stdout] 1 | fn main() {} [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `main` is never used [INFO] [stdout] --> src/tcp_server.rs:1:4 [INFO] [stdout] | [INFO] [stdout] 1 | fn main() {} [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `main` is never used [INFO] [stdout] --> src/udp_client.rs:1:4 [INFO] [stdout] | [INFO] [stdout] 1 | fn main() {} [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `main` is never used [INFO] [stdout] --> src/udp_server.rs:1:4 [INFO] [stdout] | [INFO] [stdout] 1 | fn main() {} [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 6 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 6 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.75s [INFO] running `Command { std: "docker" "inspect" "5cfd17bdfa940051c763fb71fb9100d4b7001c5d03a330e354a2bb3c987e1f99", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "5cfd17bdfa940051c763fb71fb9100d4b7001c5d03a330e354a2bb3c987e1f99", kill_on_drop: false }` [INFO] [stdout] 5cfd17bdfa940051c763fb71fb9100d4b7001c5d03a330e354a2bb3c987e1f99