[INFO] fetching crate nuts-backend 0.7.9...
[INFO] building nuts-backend-0.7.9 against try#d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6 for pr-146237-1
[INFO] extracting crate nuts-backend 0.7.9 into /workspace/builds/worker-7-tc2/source
[INFO] started tweaking crates.io crate nuts-backend 0.7.9
[INFO] finished tweaking crates.io crate nuts-backend 0.7.9
[INFO] tweaked toml for crates.io crate nuts-backend 0.7.9 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate nuts-backend 0.7.9 on toolchain d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 28bb71c4a5f3f2bfaf68ef3634d9b63f6116dc8629e877089f2660a1fbb23014
[INFO] running `Command { std: "docker" "start" "-a" "28bb71c4a5f3f2bfaf68ef3634d9b63f6116dc8629e877089f2660a1fbb23014", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "28bb71c4a5f3f2bfaf68ef3634d9b63f6116dc8629e877089f2660a1fbb23014", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "28bb71c4a5f3f2bfaf68ef3634d9b63f6116dc8629e877089f2660a1fbb23014", kill_on_drop: false }`
[INFO] [stdout] 28bb71c4a5f3f2bfaf68ef3634d9b63f6116dc8629e877089f2660a1fbb23014
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b80678496c85c97f499ed1b9ba4393495b6b730691f23a7086dcb52a66f33386
[INFO] running `Command { std: "docker" "start" "-a" "b80678496c85c97f499ed1b9ba4393495b6b730691f23a7086dcb52a66f33386", kill_on_drop: false }`
[INFO] [stderr]    Compiling nuts-backend v0.7.9 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.07s
[INFO] running `Command { std: "docker" "inspect" "b80678496c85c97f499ed1b9ba4393495b6b730691f23a7086dcb52a66f33386", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b80678496c85c97f499ed1b9ba4393495b6b730691f23a7086dcb52a66f33386", kill_on_drop: false }`
[INFO] [stdout] b80678496c85c97f499ed1b9ba4393495b6b730691f23a7086dcb52a66f33386
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f0345a341988539a2981b8f9e3b9560de67defb45db30cb1e4972afd882ffeb9
[INFO] running `Command { std: "docker" "start" "-a" "f0345a341988539a2981b8f9e3b9560de67defb45db30cb1e4972afd882ffeb9", kill_on_drop: false }`
[INFO] [stderr]    Compiling nuts-backend v0.7.9 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.16s
[INFO] running `Command { std: "docker" "inspect" "f0345a341988539a2981b8f9e3b9560de67defb45db30cb1e4972afd882ffeb9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f0345a341988539a2981b8f9e3b9560de67defb45db30cb1e4972afd882ffeb9", kill_on_drop: false }`
[INFO] [stdout] f0345a341988539a2981b8f9e3b9560de67defb45db30cb1e4972afd882ffeb9