[INFO] fetching crate zara 1.0.7...
[INFO] building zara-1.0.7 against try#d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6 for pr-146237-1
[INFO] extracting crate zara 1.0.7 into /workspace/builds/worker-0-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-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate zara 1.0.7 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]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 76758e25410a98b4c422f68b21dbd6c5a03e1cc9978a256044dfd9bb37baadde
[INFO] running `Command { std: "docker" "start" "-a" "76758e25410a98b4c422f68b21dbd6c5a03e1cc9978a256044dfd9bb37baadde", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "76758e25410a98b4c422f68b21dbd6c5a03e1cc9978a256044dfd9bb37baadde", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "76758e25410a98b4c422f68b21dbd6c5a03e1cc9978a256044dfd9bb37baadde", kill_on_drop: false }`
[INFO] [stdout] 76758e25410a98b4c422f68b21dbd6c5a03e1cc9978a256044dfd9bb37baadde
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] c6a6c3322b595af1d2b9593dd1e2ba394d5a9a1ac24980d1ef939753e97ed1e3
[INFO] running `Command { std: "docker" "start" "-a" "c6a6c3322b595af1d2b9593dd1e2ba394d5a9a1ac24980d1ef939753e97ed1e3", kill_on_drop: false }`
[INFO] [stderr]    Compiling getrandom v0.2.16
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.5
[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 3.95s
[INFO] running `Command { std: "docker" "inspect" "c6a6c3322b595af1d2b9593dd1e2ba394d5a9a1ac24980d1ef939753e97ed1e3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c6a6c3322b595af1d2b9593dd1e2ba394d5a9a1ac24980d1ef939753e97ed1e3", kill_on_drop: false }`
[INFO] [stdout] c6a6c3322b595af1d2b9593dd1e2ba394d5a9a1ac24980d1ef939753e97ed1e3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 5b1081a6b4d45fd0eccb5c23e63383342c266708514509de9cdf084977e5ce3f
[INFO] running `Command { std: "docker" "start" "-a" "5b1081a6b4d45fd0eccb5c23e63383342c266708514509de9cdf084977e5ce3f", kill_on_drop: false }`
[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]    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 `test` profile [unoptimized + debuginfo] target(s) in 1.29s
[INFO] running `Command { std: "docker" "inspect" "5b1081a6b4d45fd0eccb5c23e63383342c266708514509de9cdf084977e5ce3f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5b1081a6b4d45fd0eccb5c23e63383342c266708514509de9cdf084977e5ce3f", kill_on_drop: false }`
[INFO] [stdout] 5b1081a6b4d45fd0eccb5c23e63383342c266708514509de9cdf084977e5ce3f