[INFO] fetching crate arraygen 0.3.0...
[INFO] checking arraygen-0.3.0 against try#3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f for pr-87248
[INFO] extracting crate arraygen 0.3.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate arraygen 0.3.0 on toolchain 3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate arraygen 0.3.0
[INFO] finished tweaking crates.io crate arraygen 0.3.0
[INFO] tweaked toml for crates.io crate arraygen 0.3.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1cdadeef4f3a774103668d15fd16e347102ea01009169ee64b67c7d7ac728c8f
[INFO] running `Command { std: "docker" "start" "-a" "1cdadeef4f3a774103668d15fd16e347102ea01009169ee64b67c7d7ac728c8f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1cdadeef4f3a774103668d15fd16e347102ea01009169ee64b67c7d7ac728c8f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1cdadeef4f3a774103668d15fd16e347102ea01009169ee64b67c7d7ac728c8f", kill_on_drop: false }`
[INFO] [stdout] 1cdadeef4f3a774103668d15fd16e347102ea01009169ee64b67c7d7ac728c8f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c141a73acc5e9a70f4989955f191c83c2d529f5df19452a353f049367addea92
[INFO] running `Command { std: "docker" "start" "-a" "c141a73acc5e9a70f4989955f191c83c2d529f5df19452a353f049367addea92", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.74
[INFO] [stderr]    Compiling serde_derive v1.0.126
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling serde v1.0.126
[INFO] [stderr]    Compiling serde_json v1.0.64
[INFO] [stderr]     Checking unicode-xid v0.2.2
[INFO] [stderr]     Checking unicode-width v0.1.8
[INFO] [stderr]     Checking itoa v0.4.7
[INFO] [stderr]    Compiling compiletest_rs v0.7.0
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]     Checking dirs-sys-next v0.1.2
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]     Checking filetime v0.2.14
[INFO] [stderr]     Checking getopts v0.2.21
[INFO] [stderr]     Checking proc-macro2 v1.0.28
[INFO] [stderr]     Checking dirs-next v2.0.0
[INFO] [stderr]     Checking term v0.7.0
[INFO] [stderr]     Checking quote v1.0.9
[INFO] [stderr]     Checking tester v0.9.0
[INFO] [stderr]     Checking regex v1.5.4
[INFO] [stderr]     Checking arraygen v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking rustfix v0.5.1
[INFO] [stderr] warning (Arraygen): Method 'foo' from struct 'Sut' returns an empty array.
[INFO] [stdout] warning: field is never read: `gold`
[INFO] [stdout]   --> tests/implicit_select_all_tests.rs:16:13
[INFO] [stdout]    |
[INFO] [stdout] 16 |             pub gold: f64,
[INFO] [stdout]    |             ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `c`
[INFO] [stdout]   --> tests/implicit_select_all_tests.rs:70:13
[INFO] [stdout]    |
[INFO] [stdout] 70 |             pub c: f32,
[INFO] [stdout]    |             ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `b`
[INFO] [stdout]   --> tests/implicit_select_all_tests.rs:88:13
[INFO] [stdout]    |
[INFO] [stdout] 88 |             pub b: f32,
[INFO] [stdout]    |             ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 27.97s
[INFO] running `Command { std: "docker" "inspect" "c141a73acc5e9a70f4989955f191c83c2d529f5df19452a353f049367addea92", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c141a73acc5e9a70f4989955f191c83c2d529f5df19452a353f049367addea92", kill_on_drop: false }`
[INFO] [stdout] c141a73acc5e9a70f4989955f191c83c2d529f5df19452a353f049367addea92