[INFO] cloning repository https://github.com/KillingSpark/silver-tribble [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/KillingSpark/silver-tribble" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKillingSpark%2Fsilver-tribble", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKillingSpark%2Fsilver-tribble'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 6f43c41d6b7adae08ba8bc3744053379ce733ac5 [INFO] checking KillingSpark/silver-tribble against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKillingSpark%2Fsilver-tribble" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/KillingSpark/silver-tribble 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/KillingSpark/silver-tribble [INFO] finished tweaking git repo https://github.com/KillingSpark/silver-tribble [INFO] tweaked toml for git repo https://github.com/KillingSpark/silver-tribble written to /workspace/builds/worker-5-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/KillingSpark/silver-tribble 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 arc-swap v1.3.0 [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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 2e7694ffbc677f66e174015e1b899dd61056bc8ffdc17894462f895de5a8b741 [INFO] running `Command { std: "docker" "start" "-a" "2e7694ffbc677f66e174015e1b899dd61056bc8ffdc17894462f895de5a8b741", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "2e7694ffbc677f66e174015e1b899dd61056bc8ffdc17894462f895de5a8b741", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "2e7694ffbc677f66e174015e1b899dd61056bc8ffdc17894462f895de5a8b741", kill_on_drop: false }` [INFO] [stdout] 2e7694ffbc677f66e174015e1b899dd61056bc8ffdc17894462f895de5a8b741 [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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] dce17bf741d2d0c512c8b7c9c752f491adaafcc3ec0422391e8f27a0230a40e1 [INFO] running `Command { std: "docker" "start" "-a" "dce17bf741d2d0c512c8b7c9c752f491adaafcc3ec0422391e8f27a0230a40e1", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.100 [INFO] [stderr] Compiling crossbeam-utils v0.8.5 [INFO] [stderr] Checking arc-swap v1.3.0 [INFO] [stderr] Compiling memoffset v0.6.4 [INFO] [stderr] Checking crossbeam-channel v0.5.1 [INFO] [stderr] Checking num_cpus v1.13.0 [INFO] [stderr] Checking nix v0.22.1 [INFO] [stderr] Checking threadpool v1.8.1 [INFO] [stderr] Checking graph_processing v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> src/bin/simple.rs:8:21 [INFO] [stdout] | [INFO] [stdout] 8 | struct Receiver(usize, Arc); [INFO] [stdout] | -------- ^^^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this struct [INFO] [stdout] | [INFO] [stdout] = note: `Receiver` 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] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field [INFO] [stdout] | [INFO] [stdout] 8 | struct Receiver((), Arc); [INFO] [stdout] | ~~ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> src/bin/simple.rs:9:19 [INFO] [stdout] | [INFO] [stdout] 9 | struct Packet(usize); [INFO] [stdout] | ------ ^^^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this struct [INFO] [stdout] | [INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field [INFO] [stdout] | [INFO] [stdout] 9 | struct Packet(()); [INFO] [stdout] | ~~ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.90s [INFO] running `Command { std: "docker" "inspect" "dce17bf741d2d0c512c8b7c9c752f491adaafcc3ec0422391e8f27a0230a40e1", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "dce17bf741d2d0c512c8b7c9c752f491adaafcc3ec0422391e8f27a0230a40e1", kill_on_drop: false }` [INFO] [stdout] dce17bf741d2d0c512c8b7c9c752f491adaafcc3ec0422391e8f27a0230a40e1 [INFO] checking KillingSpark/silver-tribble against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKillingSpark%2Fsilver-tribble" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/KillingSpark/silver-tribble 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/KillingSpark/silver-tribble [INFO] finished tweaking git repo https://github.com/KillingSpark/silver-tribble [INFO] tweaked toml for git repo https://github.com/KillingSpark/silver-tribble written to /workspace/builds/worker-5-tc2/source/Cargo.toml [INFO] crate git repo https://github.com/KillingSpark/silver-tribble 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-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 9069ab32516cd40176b16dd4f88a14aa1cc8940481d9b3244940f50333827e75 [INFO] running `Command { std: "docker" "start" "-a" "9069ab32516cd40176b16dd4f88a14aa1cc8940481d9b3244940f50333827e75", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "9069ab32516cd40176b16dd4f88a14aa1cc8940481d9b3244940f50333827e75", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "9069ab32516cd40176b16dd4f88a14aa1cc8940481d9b3244940f50333827e75", kill_on_drop: false }` [INFO] [stdout] 9069ab32516cd40176b16dd4f88a14aa1cc8940481d9b3244940f50333827e75 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 39668b5a95582719724b03105aea48add16bd0dc31bbde0417ed3e035b6d0d79 [INFO] running `Command { std: "docker" "start" "-a" "39668b5a95582719724b03105aea48add16bd0dc31bbde0417ed3e035b6d0d79", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.100 [INFO] [stderr] Compiling memoffset v0.6.4 [INFO] [stderr] Compiling crossbeam-utils v0.8.5 [INFO] [stderr] Checking arc-swap v1.3.0 [INFO] [stderr] Checking crossbeam-channel v0.5.1 [INFO] [stderr] Checking num_cpus v1.13.0 [INFO] [stderr] Checking nix v0.22.1 [INFO] [stderr] Checking threadpool v1.8.1 [INFO] [stderr] Checking graph_processing v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> src/bin/simple.rs:8:21 [INFO] [stdout] | [INFO] [stdout] 8 | struct Receiver(usize, Arc); [INFO] [stdout] | -------- ^^^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this struct [INFO] [stdout] | [INFO] [stdout] = note: `Receiver` 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] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field [INFO] [stdout] | [INFO] [stdout] 8 | struct Receiver((), Arc); [INFO] [stdout] | ~~ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> src/bin/simple.rs:9:19 [INFO] [stdout] | [INFO] [stdout] 9 | struct Packet(usize); [INFO] [stdout] | ------ ^^^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this struct [INFO] [stdout] | [INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field [INFO] [stdout] | [INFO] [stdout] 9 | struct Packet(()); [INFO] [stdout] | ~~ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.80s [INFO] running `Command { std: "docker" "inspect" "39668b5a95582719724b03105aea48add16bd0dc31bbde0417ed3e035b6d0d79", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "39668b5a95582719724b03105aea48add16bd0dc31bbde0417ed3e035b6d0d79", kill_on_drop: false }` [INFO] [stdout] 39668b5a95582719724b03105aea48add16bd0dc31bbde0417ed3e035b6d0d79