[INFO] cloning repository https://github.com/daniel-brenot-apcapital/example-zmq
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/daniel-brenot-apcapital/example-zmq" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdaniel-brenot-apcapital%2Fexample-zmq", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdaniel-brenot-apcapital%2Fexample-zmq'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a90456889778727d87aa51003782faedc01601a5
[INFO] checking daniel-brenot-apcapital/example-zmq against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdaniel-brenot-apcapital%2Fexample-zmq" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/daniel-brenot-apcapital/example-zmq 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/daniel-brenot-apcapital/example-zmq
[INFO] finished tweaking git repo https://github.com/daniel-brenot-apcapital/example-zmq
[INFO] tweaked toml for git repo https://github.com/daniel-brenot-apcapital/example-zmq written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/daniel-brenot-apcapital/example-zmq 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]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded zmq2 v0.5.0
[INFO] [stderr]   Downloaded cfg-expr v0.10.3
[INFO] [stderr]   Downloaded system-deps v6.0.2
[INFO] [stderr]   Downloaded jwalk v0.6.0
[INFO] [stderr]   Downloaded dircpy v0.3.12
[INFO] [stderr]   Downloaded zmq-sys2 v0.3.0
[INFO] [stderr]   Downloaded zeromq-src v0.2.2+4.3.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 7ae4e4517fcb8f52df671480de46494929cd16d2d408db888278e369d2d9ba7b
[INFO] running `Command { std: "docker" "start" "-a" "7ae4e4517fcb8f52df671480de46494929cd16d2d408db888278e369d2d9ba7b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7ae4e4517fcb8f52df671480de46494929cd16d2d408db888278e369d2d9ba7b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7ae4e4517fcb8f52df671480de46494929cd16d2d408db888278e369d2d9ba7b", kill_on_drop: false }`
[INFO] [stdout] 7ae4e4517fcb8f52df671480de46494929cd16d2d408db888278e369d2d9ba7b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 71fe2168502c9d69c624e6472a7a9998706b618971a0929dc8e55819d755e67f
[INFO] running `Command { std: "docker" "start" "-a" "71fe2168502c9d69c624e6472a7a9998706b618971a0929dc8e55819d755e67f", kill_on_drop: false }`
[INFO] [stderr]    Compiling crossbeam-utils v0.8.11
[INFO] [stderr]    Compiling once_cell v1.13.0
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.10
[INFO] [stderr]    Compiling scopeguard v1.1.0
[INFO] [stderr]    Compiling rayon-core v1.9.3
[INFO] [stderr]    Compiling crossbeam-queue v0.3.6
[INFO] [stderr]    Compiling rayon v1.5.3
[INFO] [stderr]    Compiling either v1.7.0
[INFO] [stderr]    Compiling serde v1.0.140
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling same-file v1.0.6
[INFO] [stderr]    Compiling smallvec v1.9.0
[INFO] [stderr]    Compiling heck v0.4.0
[INFO] [stderr]    Compiling pkg-config v0.3.25
[INFO] [stderr]    Compiling walkdir v2.3.2
[INFO] [stderr]    Compiling version-compare v0.1.0
[INFO] [stderr]    Compiling zmq2 v0.5.0
[INFO] [stderr]    Compiling cfg-expr v0.10.3
[INFO] [stderr]    Compiling crossbeam-channel v0.5.6
[INFO] [stderr]    Compiling crossbeam-deque v0.8.2
[INFO] [stderr]    Compiling num_cpus v1.13.1
[INFO] [stderr]    Compiling jobserver v0.1.24
[INFO] [stderr]    Compiling crossbeam v0.8.2
[INFO] [stderr]    Compiling cc v1.0.73
[INFO] [stderr]    Compiling toml v0.5.9
[INFO] [stderr]    Compiling jwalk v0.6.0
[INFO] [stderr]    Compiling dircpy v0.3.12
[INFO] [stderr]    Compiling system-deps v6.0.2
[INFO] [stderr]    Compiling zeromq-src v0.2.2+4.3.4
[INFO] [stderr]    Compiling zmq-sys2 v0.3.0
[INFO] [stderr]     Checking example-zmq v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `zmq2` is imported redundantly
[INFO] [stdout]  --> src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use zmq2;
[INFO] [stdout]   |     ^^^^ the item `zmq2` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `zmq2` is imported redundantly
[INFO] [stdout]  --> src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use zmq2;
[INFO] [stdout]   |     ^^^^ the item `zmq2` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ctx`
[INFO] [stdout]  --> src/main.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let ctx = zmq2::Context::new();
[INFO] [stdout]   |         ^^^ help: if this is intentional, prefix it with an underscore: `_ctx`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ctx`
[INFO] [stdout]  --> src/main.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let ctx = zmq2::Context::new();
[INFO] [stdout]   |         ^^^ help: if this is intentional, prefix it with an underscore: `_ctx`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 40.60s
[INFO] running `Command { std: "docker" "inspect" "71fe2168502c9d69c624e6472a7a9998706b618971a0929dc8e55819d755e67f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "71fe2168502c9d69c624e6472a7a9998706b618971a0929dc8e55819d755e67f", kill_on_drop: false }`
[INFO] [stdout] 71fe2168502c9d69c624e6472a7a9998706b618971a0929dc8e55819d755e67f