[INFO] fetching crate log4rs-syslog-net 0.2.2... [INFO] checking log4rs-syslog-net-0.2.2 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar [INFO] extracting crate log4rs-syslog-net 0.2.2 into /workspace/builds/worker-6-tc1/source [INFO] validating manifest of crates.io crate log4rs-syslog-net 0.2.2 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 crates.io crate log4rs-syslog-net 0.2.2 [INFO] finished tweaking crates.io crate log4rs-syslog-net 0.2.2 [INFO] tweaked toml for crates.io crate log4rs-syslog-net 0.2.2 written to /workspace/builds/worker-6-tc1/source/Cargo.toml [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Locking 45 packages [INFO] [stderr] Adding arc-swap v0.4.8 (latest: v1.7.1) [INFO] [stderr] Adding log4rs v0.13.0 (latest: v1.3.0) [INFO] [stderr] Adding redox_syscall v0.1.57 (latest: v0.5.1) [INFO] [stderr] Adding thread-id v3.3.0 (latest: v4.2.1) [INFO] [stderr] Adding windows-core v0.52.0 (latest: v0.55.0) [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 arc-swap v0.4.8 [INFO] [stderr] Downloaded log4rs v0.13.0 [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] bf607d1952717303d67e866a51330ec01a9ed9a258dfc91612aad12937973f7b [INFO] running `Command { std: "docker" "start" "-a" "bf607d1952717303d67e866a51330ec01a9ed9a258dfc91612aad12937973f7b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "bf607d1952717303d67e866a51330ec01a9ed9a258dfc91612aad12937973f7b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "bf607d1952717303d67e866a51330ec01a9ed9a258dfc91612aad12937973f7b", kill_on_drop: false }` [INFO] [stdout] bf607d1952717303d67e866a51330ec01a9ed9a258dfc91612aad12937973f7b [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] a4d3640feb198abb805e773819d0771042bc70245c9c400d6bac71d723db7976 [INFO] running `Command { std: "docker" "start" "-a" "a4d3640feb198abb805e773819d0771042bc70245c9c400d6bac71d723db7976", kill_on_drop: false }` [INFO] [stderr] Compiling serde v1.0.197 [INFO] [stderr] Checking log-mdc v0.1.0 [INFO] [stderr] Checking arc-swap v0.4.8 [INFO] [stderr] Checking thread-id v3.3.0 [INFO] [stderr] Checking chrono v0.4.37 [INFO] [stderr] Checking log4rs v0.13.0 [INFO] [stderr] Checking log4rs-syslog-net v0.2.2 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused label [INFO] [stdout] --> src/lib.rs:111:36 [INFO] [stdout] | [INFO] [stdout] 111 | std::thread::spawn(move || 'outer: loop { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_labels)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused label [INFO] [stdout] --> src/lib.rs:111:36 [INFO] [stdout] | [INFO] [stdout] 111 | std::thread::spawn(move || 'outer: loop { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_labels)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `addr` is never read [INFO] [stdout] --> src/lib.rs:47:5 [INFO] [stdout] | [INFO] [stdout] 46 | pub struct SyslogAppender { [INFO] [stdout] | -------------- field in this struct [INFO] [stdout] 47 | addr: String, [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `SyslogAppender` 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: unused `Result` that must be used [INFO] [stdout] --> src/lib.rs:123:33 [INFO] [stdout] | [INFO] [stdout] 123 | ... conn.write_all(&v); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 123 | let _ = conn.write_all(&v); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/lib.rs:124:33 [INFO] [stdout] | [INFO] [stdout] 124 | ... conn.flush(); [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 124 | let _ = conn.flush(); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `addr` is never read [INFO] [stdout] --> src/lib.rs:47:5 [INFO] [stdout] | [INFO] [stdout] 46 | pub struct SyslogAppender { [INFO] [stdout] | -------------- field in this struct [INFO] [stdout] 47 | addr: String, [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `SyslogAppender` 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: unused `Result` that must be used [INFO] [stdout] --> src/lib.rs:123:33 [INFO] [stdout] | [INFO] [stdout] 123 | ... conn.write_all(&v); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 123 | let _ = conn.write_all(&v); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/lib.rs:124:33 [INFO] [stdout] | [INFO] [stdout] 124 | ... conn.flush(); [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 124 | let _ = conn.flush(); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.53s [INFO] running `Command { std: "docker" "inspect" "a4d3640feb198abb805e773819d0771042bc70245c9c400d6bac71d723db7976", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "a4d3640feb198abb805e773819d0771042bc70245c9c400d6bac71d723db7976", kill_on_drop: false }` [INFO] [stdout] a4d3640feb198abb805e773819d0771042bc70245c9c400d6bac71d723db7976 [INFO] checking log4rs-syslog-net-0.2.2 against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar [INFO] extracting crate log4rs-syslog-net 0.2.2 into /workspace/builds/worker-6-tc2/source [INFO] validating manifest of crates.io crate log4rs-syslog-net 0.2.2 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 crates.io crate log4rs-syslog-net 0.2.2 [INFO] finished tweaking crates.io crate log4rs-syslog-net 0.2.2 [INFO] tweaked toml for crates.io crate log4rs-syslog-net 0.2.2 written to /workspace/builds/worker-6-tc2/source/Cargo.toml [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [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] 86391d35a2320e424eba59f3eb8c5d2d6c935a52abcce36288587604b7ae358e [INFO] running `Command { std: "docker" "start" "-a" "86391d35a2320e424eba59f3eb8c5d2d6c935a52abcce36288587604b7ae358e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "86391d35a2320e424eba59f3eb8c5d2d6c935a52abcce36288587604b7ae358e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "86391d35a2320e424eba59f3eb8c5d2d6c935a52abcce36288587604b7ae358e", kill_on_drop: false }` [INFO] [stdout] 86391d35a2320e424eba59f3eb8c5d2d6c935a52abcce36288587604b7ae358e [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] 124fdb96bbb05af76675181fbdd10341cda83b23ad0f984416a2c3af8f9db698 [INFO] running `Command { std: "docker" "start" "-a" "124fdb96bbb05af76675181fbdd10341cda83b23ad0f984416a2c3af8f9db698", kill_on_drop: false }` [INFO] [stderr] Compiling serde v1.0.197 [INFO] [stderr] Checking arc-swap v0.4.8 [INFO] [stderr] Checking log-mdc v0.1.0 [INFO] [stderr] Checking thread-id v3.3.0 [INFO] [stderr] Checking chrono v0.4.37 [INFO] [stderr] Checking log4rs v0.13.0 [INFO] [stderr] Checking log4rs-syslog-net v0.2.2 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused label [INFO] [stdout] --> src/lib.rs:111:36 [INFO] [stdout] | [INFO] [stdout] 111 | std::thread::spawn(move || 'outer: loop { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_labels)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused label [INFO] [stdout] --> src/lib.rs:111:36 [INFO] [stdout] | [INFO] [stdout] 111 | std::thread::spawn(move || 'outer: loop { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_labels)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `addr` is never read [INFO] [stdout] --> src/lib.rs:47:5 [INFO] [stdout] | [INFO] [stdout] 46 | pub struct SyslogAppender { [INFO] [stdout] | -------------- field in this struct [INFO] [stdout] 47 | addr: String, [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `SyslogAppender` 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: unused `Result` that must be used [INFO] [stdout] --> src/lib.rs:123:33 [INFO] [stdout] | [INFO] [stdout] 123 | ... conn.write_all(&v); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 123 | let _ = conn.write_all(&v); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/lib.rs:124:33 [INFO] [stdout] | [INFO] [stdout] 124 | ... conn.flush(); [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 124 | let _ = conn.flush(); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `addr` is never read [INFO] [stdout] --> src/lib.rs:47:5 [INFO] [stdout] | [INFO] [stdout] 46 | pub struct SyslogAppender { [INFO] [stdout] | -------------- field in this struct [INFO] [stdout] 47 | addr: String, [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `SyslogAppender` 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: unused `Result` that must be used [INFO] [stdout] --> src/lib.rs:123:33 [INFO] [stdout] | [INFO] [stdout] 123 | ... conn.write_all(&v); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 123 | let _ = conn.write_all(&v); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/lib.rs:124:33 [INFO] [stdout] | [INFO] [stdout] 124 | ... conn.flush(); [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 124 | let _ = conn.flush(); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.91s [INFO] running `Command { std: "docker" "inspect" "124fdb96bbb05af76675181fbdd10341cda83b23ad0f984416a2c3af8f9db698", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "124fdb96bbb05af76675181fbdd10341cda83b23ad0f984416a2c3af8f9db698", kill_on_drop: false }` [INFO] [stdout] 124fdb96bbb05af76675181fbdd10341cda83b23ad0f984416a2c3af8f9db698