[INFO] fetching crate rug 1.28.0...
[INFO] building rug-1.28.0 against master#eb171a227f9e5de5d376b6edb56b174bc8235fb3 for pr-149937
[INFO] extracting crate rug 1.28.0 into /workspace/builds/worker-0-tc1/source
[INFO] started tweaking crates.io crate rug 1.28.0
[INFO] finished tweaking crates.io crate rug 1.28.0
[INFO] tweaked toml for crates.io crate rug 1.28.0 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate rug 1.28.0 on toolchain eb171a227f9e5de5d376b6edb56b174bc8235fb3
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+eb171a227f9e5de5d376b6edb56b174bc8235fb3" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate rug 1.28.0 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" "+eb171a227f9e5de5d376b6edb56b174bc8235fb3" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded gmp-mpfr-sys v1.6.7
[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@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+eb171a227f9e5de5d376b6edb56b174bc8235fb3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 71ebae5422b4c60e06c43b58f3804cdd5634b437c4f6e98a75c3a2f61bd8f0d1
[INFO] running `Command { std: "docker" "start" "-a" "71ebae5422b4c60e06c43b58f3804cdd5634b437c4f6e98a75c3a2f61bd8f0d1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "71ebae5422b4c60e06c43b58f3804cdd5634b437c4f6e98a75c3a2f61bd8f0d1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "71ebae5422b4c60e06c43b58f3804cdd5634b437c4f6e98a75c3a2f61bd8f0d1", kill_on_drop: false }`
[INFO] [stdout] 71ebae5422b4c60e06c43b58f3804cdd5634b437c4f6e98a75c3a2f61bd8f0d1
[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@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+eb171a227f9e5de5d376b6edb56b174bc8235fb3" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 06bc606cde9853e4030c8e6a0a6097c5c800a6b1e48a0437fe873d1d1daf0a7e
[INFO] running `Command { std: "docker" "start" "-a" "06bc606cde9853e4030c8e6a0a6097c5c800a6b1e48a0437fe873d1d1daf0a7e", kill_on_drop: false }`
[INFO] [stderr]    Compiling gmp-mpfr-sys v1.6.7
[INFO] [stderr]    Compiling libm v0.2.15
[INFO] [stderr]    Compiling az v1.2.1
[INFO] [stderr]    Compiling rug v1.28.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4m 51s
[INFO] running `Command { std: "docker" "inspect" "06bc606cde9853e4030c8e6a0a6097c5c800a6b1e48a0437fe873d1d1daf0a7e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "06bc606cde9853e4030c8e6a0a6097c5c800a6b1e48a0437fe873d1d1daf0a7e", kill_on_drop: false }`
[INFO] [stdout] 06bc606cde9853e4030c8e6a0a6097c5c800a6b1e48a0437fe873d1d1daf0a7e
[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@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+eb171a227f9e5de5d376b6edb56b174bc8235fb3" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 75911bcff56e27ad84d52579ef54dc560da1d52ed7f9b08c05161a87fa04042a
[INFO] running `Command { std: "docker" "start" "-a" "75911bcff56e27ad84d52579ef54dc560da1d52ed7f9b08c05161a87fa04042a", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.219
[INFO] [stderr]    Compiling serde_json v1.0.143
[INFO] [stderr]    Compiling bincode v1.3.3
[INFO] [stderr]    Compiling serde_test v1.0.177
[INFO] [stderr]    Compiling rug v1.28.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `new_data` is never read
[INFO] [stdout]    --> src/complex/tests.rs:367:13
[INFO] [stdout]     |
[INFO] [stdout] 367 |             new_data = new_val.inner().d;
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 19.30s
[INFO] running `Command { std: "docker" "inspect" "75911bcff56e27ad84d52579ef54dc560da1d52ed7f9b08c05161a87fa04042a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "75911bcff56e27ad84d52579ef54dc560da1d52ed7f9b08c05161a87fa04042a", kill_on_drop: false }`
[INFO] [stdout] 75911bcff56e27ad84d52579ef54dc560da1d52ed7f9b08c05161a87fa04042a