[INFO] fetching crate hashtree 0.2.1...
[INFO] testing hashtree-0.2.1 against master#432e145bd5a974c5b6f4dd9b352891bd7502b69d for pr-87041
[INFO] extracting crate hashtree 0.2.1 into /workspace/builds/worker-13/source
[INFO] validating manifest of crates.io crate hashtree 0.2.1 on toolchain 432e145bd5a974c5b6f4dd9b352891bd7502b69d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate hashtree 0.2.1
[INFO] finished tweaking crates.io crate hashtree 0.2.1
[INFO] tweaked toml for crates.io crate hashtree 0.2.1 written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9209ef48a31eacc7e0a353da553858954bf799b06b9986022db1648845ff7fb8
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "9209ef48a31eacc7e0a353da553858954bf799b06b9986022db1648845ff7fb8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9209ef48a31eacc7e0a353da553858954bf799b06b9986022db1648845ff7fb8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9209ef48a31eacc7e0a353da553858954bf799b06b9986022db1648845ff7fb8", kill_on_drop: false }`
[INFO] [stdout] 9209ef48a31eacc7e0a353da553858954bf799b06b9986022db1648845ff7fb8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 73d2ffc783c34d2d34d9a2c00326e7a361d7b669f4984ed08a3aa55c3f3d3ddd
[INFO] running `Command { std: "docker" "start" "-a" "73d2ffc783c34d2d34d9a2c00326e7a361d7b669f4984ed08a3aa55c3f3d3ddd", kill_on_drop: false }`
[INFO] [stderr]    Compiling hashtree v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `data`
[INFO] [stdout]    --> src/lib.rs:234:33
[INFO] [stdout]     |
[INFO] [stdout] 234 |     pub fn insert<R>(&mut self, data: &mut R) 
[INFO] [stdout]     |                                 ^^^^ help: if this is intentional, prefix it with an underscore: `_data`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `hash`
[INFO] [stdout]    --> src/lib.rs:282:24
[INFO] [stdout]     |
[INFO] [stdout] 282 |     pub fn find(&self, hash: T) -> Option<&HashTreeNode<T>> {
[INFO] [stdout]     |                        ^^^^ help: if this is intentional, prefix it with an underscore: `_hash`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.26s
[INFO] running `Command { std: "docker" "inspect" "73d2ffc783c34d2d34d9a2c00326e7a361d7b669f4984ed08a3aa55c3f3d3ddd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "73d2ffc783c34d2d34d9a2c00326e7a361d7b669f4984ed08a3aa55c3f3d3ddd", kill_on_drop: false }`
[INFO] [stdout] 73d2ffc783c34d2d34d9a2c00326e7a361d7b669f4984ed08a3aa55c3f3d3ddd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6ce9d07d37696b739e4d981d9763a03614f75c4f169fe1c137a9b3fcb61f489a
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "6ce9d07d37696b739e4d981d9763a03614f75c4f169fe1c137a9b3fcb61f489a", kill_on_drop: false }`
[INFO] [stderr]    Compiling hashtree v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `data`
[INFO] [stdout]    --> src/lib.rs:234:33
[INFO] [stdout]     |
[INFO] [stdout] 234 |     pub fn insert<R>(&mut self, data: &mut R) 
[INFO] [stdout]     |                                 ^^^^ help: if this is intentional, prefix it with an underscore: `_data`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `hash`
[INFO] [stdout]    --> src/lib.rs:282:24
[INFO] [stdout]     |
[INFO] [stdout] 282 |     pub fn find(&self, hash: T) -> Option<&HashTreeNode<T>> {
[INFO] [stdout]     |                        ^^^^ help: if this is intentional, prefix it with an underscore: `_hash`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `data`
[INFO] [stdout]    --> src/lib.rs:234:33
[INFO] [stdout]     |
[INFO] [stdout] 234 |     pub fn insert<R>(&mut self, data: &mut R) 
[INFO] [stdout]     |                                 ^^^^ help: if this is intentional, prefix it with an underscore: `_data`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `hash`
[INFO] [stdout]    --> src/lib.rs:282:24
[INFO] [stdout]     |
[INFO] [stdout] 282 |     pub fn find(&self, hash: T) -> Option<&HashTreeNode<T>> {
[INFO] [stdout]     |                        ^^^^ help: if this is intentional, prefix it with an underscore: `_hash`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.55s
[INFO] running `Command { std: "docker" "inspect" "6ce9d07d37696b739e4d981d9763a03614f75c4f169fe1c137a9b3fcb61f489a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6ce9d07d37696b739e4d981d9763a03614f75c4f169fe1c137a9b3fcb61f489a", kill_on_drop: false }`
[INFO] [stdout] 6ce9d07d37696b739e4d981d9763a03614f75c4f169fe1c137a9b3fcb61f489a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 9c3f1240981e453c1b8de7e619134070b5d6d2b88a6e217cb5def9a22b4a126f
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "9c3f1240981e453c1b8de7e619134070b5d6d2b88a6e217cb5def9a22b4a126f", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr] warning: unused variable: `data`
[INFO] [stdout] running 0 tests
[INFO] [stderr]    --> src/lib.rs:234:33
[INFO] [stdout] 
[INFO] [stderr]     |
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr] 234 |     pub fn insert<R>(&mut self, data: &mut R) 
[INFO] [stdout] 
[INFO] [stderr]     |                                 ^^^^ help: if this is intentional, prefix it with an underscore: `_data`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `hash`
[INFO] [stderr]    --> src/lib.rs:282:24
[INFO] [stderr]     |
[INFO] [stderr] 282 |     pub fn find(&self, hash: T) -> Option<&HashTreeNode<T>> {
[INFO] [stderr]     |                        ^^^^ help: if this is intentional, prefix it with an underscore: `_hash`
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `data`
[INFO] [stderr]    --> src/lib.rs:234:33
[INFO] [stderr]     |
[INFO] [stderr] 234 |     pub fn insert<R>(&mut self, data: &mut R) 
[INFO] [stderr]     |                                 ^^^^ help: if this is intentional, prefix it with an underscore: `_data`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `hash`
[INFO] [stderr]    --> src/lib.rs:282:24
[INFO] [stderr]     |
[INFO] [stderr] 282 |     pub fn find(&self, hash: T) -> Option<&HashTreeNode<T>> {
[INFO] [stderr]     |                        ^^^^ help: if this is intentional, prefix it with an underscore: `_hash`
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/hashtree-094f32941c87a40d)
[INFO] [stderr]    Doc-tests hashtree
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test src/lib.rs - HashTree<T, F>::new (line 126) ... ok
[INFO] [stdout] test src/lib.rs - HashTree<T, F>::is_empty (line 251) ... ok
[INFO] [stdout] test src/lib.rs - HashTree<T, F>::create (line 156) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.55s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "9c3f1240981e453c1b8de7e619134070b5d6d2b88a6e217cb5def9a22b4a126f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9c3f1240981e453c1b8de7e619134070b5d6d2b88a6e217cb5def9a22b4a126f", kill_on_drop: false }`
[INFO] [stdout] 9c3f1240981e453c1b8de7e619134070b5d6d2b88a6e217cb5def9a22b4a126f