[INFO] fetching crate zara 1.0.7...
[INFO] building zara-1.0.7 against try#4987e9d4227139400384ab59296ffee3b0fb1183 for pr-146237-2
[INFO] extracting crate zara 1.0.7 into /workspace/builds/worker-3-tc2/source
[INFO] started tweaking crates.io crate zara 1.0.7
[INFO] finished tweaking crates.io crate zara 1.0.7
[INFO] tweaked toml for crates.io crate zara 1.0.7 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate zara 1.0.7 on toolchain 4987e9d4227139400384ab59296ffee3b0fb1183
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "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" "+4987e9d4227139400384ab59296ffee3b0fb1183" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 14 packages to latest compatible versions
[INFO] [stderr]       Adding rand v0.8.5 (available: v0.9.2)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "+4987e9d4227139400384ab59296ffee3b0fb1183" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] dbd52edf0b8271b91ba4c198310b77edf7f1ba6199614472f11dd15e2f2c4457
[INFO] running `Command { std: "docker" "start" "-a" "dbd52edf0b8271b91ba4c198310b77edf7f1ba6199614472f11dd15e2f2c4457", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dbd52edf0b8271b91ba4c198310b77edf7f1ba6199614472f11dd15e2f2c4457", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dbd52edf0b8271b91ba4c198310b77edf7f1ba6199614472f11dd15e2f2c4457", kill_on_drop: false }`
[INFO] [stdout] dbd52edf0b8271b91ba4c198310b77edf7f1ba6199614472f11dd15e2f2c4457
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "+4987e9d4227139400384ab59296ffee3b0fb1183" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 72dfdc2e07a685d603489c06c0c50e4d50ef9c2d6e65009b7ef05b2daa6e0e42
[INFO] running `Command { std: "docker" "start" "-a" "72dfdc2e07a685d603489c06c0c50e4d50ef9c2d6e65009b7ef05b2daa6e0e42", kill_on_drop: false }`
[INFO] [stderr]    Compiling zara v1.0.7 (/opt/rustwide/workdir)
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&std::sync::Weak<RefCell<T>>` instead of cloning the inner type
[INFO] [stdout]    --> src/utils/event.rs:292:32
[INFO] [stdout]     |
[INFO] [stdout] 292 |                 let got_ref = l.clone().upgrade();
[INFO] [stdout]     |                                ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(suspicious_double_ref_op)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.42s
[INFO] running `Command { std: "docker" "inspect" "72dfdc2e07a685d603489c06c0c50e4d50ef9c2d6e65009b7ef05b2daa6e0e42", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "72dfdc2e07a685d603489c06c0c50e4d50ef9c2d6e65009b7ef05b2daa6e0e42", kill_on_drop: false }`
[INFO] [stdout] 72dfdc2e07a685d603489c06c0c50e4d50ef9c2d6e65009b7ef05b2daa6e0e42
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "+4987e9d4227139400384ab59296ffee3b0fb1183" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 54e7d40fe1c43220064611ab8d4fb6b85088687d2c28a9672f843a830ee4b123
[INFO] running `Command { std: "docker" "start" "-a" "54e7d40fe1c43220064611ab8d4fb6b85088687d2c28a9672f843a830ee4b123", kill_on_drop: false }`
[INFO] [stderr]    Compiling zara v1.0.7 (/opt/rustwide/workdir)
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&std::sync::Weak<RefCell<T>>` instead of cloning the inner type
[INFO] [stdout]    --> src/utils/event.rs:292:32
[INFO] [stdout]     |
[INFO] [stdout] 292 |                 let got_ref = l.clone().upgrade();
[INFO] [stdout]     |                                ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(suspicious_double_ref_op)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&std::sync::Weak<RefCell<T>>` instead of cloning the inner type
[INFO] [stdout]    --> src/utils/event.rs:292:32
[INFO] [stdout]     |
[INFO] [stdout] 292 |                 let got_ref = l.clone().upgrade();
[INFO] [stdout]     |                                ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(suspicious_double_ref_op)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 2.11s
[INFO] running `Command { std: "docker" "inspect" "54e7d40fe1c43220064611ab8d4fb6b85088687d2c28a9672f843a830ee4b123", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "54e7d40fe1c43220064611ab8d4fb6b85088687d2c28a9672f843a830ee4b123", kill_on_drop: false }`
[INFO] [stdout] 54e7d40fe1c43220064611ab8d4fb6b85088687d2c28a9672f843a830ee4b123