[INFO] fetching crate flatzinc 0.3.19...
[INFO] checking flatzinc-0.3.19 against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] extracting crate flatzinc 0.3.19 into /workspace/builds/worker-5-tc1/source
[INFO] validating manifest of crates.io crate flatzinc 0.3.19 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 flatzinc 0.3.19
[INFO] finished tweaking crates.io crate flatzinc 0.3.19
[INFO] tweaked toml for crates.io crate flatzinc 0.3.19 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate crates.io crate flatzinc 0.3.19 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 stderrlog v0.5.1
[INFO] [stderr]   Downloaded nom v7.1.0
[INFO] [stderr]   Downloaded anyhow v1.0.55
[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] 3ebab0f3b406425beda5d131fcebbb28ffc7a0760c5b17efc00bdb34d0f349b1
[INFO] running `Command { std: "docker" "start" "-a" "3ebab0f3b406425beda5d131fcebbb28ffc7a0760c5b17efc00bdb34d0f349b1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3ebab0f3b406425beda5d131fcebbb28ffc7a0760c5b17efc00bdb34d0f349b1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3ebab0f3b406425beda5d131fcebbb28ffc7a0760c5b17efc00bdb34d0f349b1", kill_on_drop: false }`
[INFO] [stdout] 3ebab0f3b406425beda5d131fcebbb28ffc7a0760c5b17efc00bdb34d0f349b1
[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] 0008929b6d3fd75ea429909cd06390b2a9f91e1ca3fa4c01103193d10270f428
[INFO] running `Command { std: "docker" "start" "-a" "0008929b6d3fd75ea429909cd06390b2a9f91e1ca3fa4c01103193d10270f428", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.86
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]    Compiling nom v7.1.0
[INFO] [stderr]     Checking unicode-width v0.1.9
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling unicode-segmentation v1.9.0
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking ansi_term v0.12.1
[INFO] [stderr]    Compiling anyhow v1.0.55
[INFO] [stderr]     Checking vec_map v0.8.2
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]     Checking clap v2.34.0
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking stderrlog v0.5.1
[INFO] [stderr]     Checking flatzinc v0.3.19 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling structopt-derive v0.4.18
[INFO] [stderr]     Checking structopt v0.3.26
[INFO] [stdout] warning: the item `stderrlog` is imported redundantly
[INFO] [stdout]  --> examples/fz-parser.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use stderrlog;
[INFO] [stdout]   |     ^^^^^^^^^ the item `stderrlog` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 14.93s
[INFO] running `Command { std: "docker" "inspect" "0008929b6d3fd75ea429909cd06390b2a9f91e1ca3fa4c01103193d10270f428", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0008929b6d3fd75ea429909cd06390b2a9f91e1ca3fa4c01103193d10270f428", kill_on_drop: false }`
[INFO] [stdout] 0008929b6d3fd75ea429909cd06390b2a9f91e1ca3fa4c01103193d10270f428