[INFO] fetching crate better_btree 0.2.6...
[INFO] testing better_btree-0.2.6 against master#a77da2d454e6caa227a85b16410b95f93495e7e0 for pr-91031
[INFO] extracting crate better_btree 0.2.6 into /workspace/builds/worker-90/source
[INFO] validating manifest of crates.io crate better_btree 0.2.6 on toolchain a77da2d454e6caa227a85b16410b95f93495e7e0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate better_btree 0.2.6
[INFO] finished tweaking crates.io crate better_btree 0.2.6
[INFO] tweaked toml for crates.io crate better_btree 0.2.6 written to /workspace/builds/worker-90/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "fetch" "--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: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-90/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-90/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 828a1e57cf59d27115e51d36fc6c987a40a612abbb08b7278d1473fe866c1ece
[INFO] running `Command { std: "docker" "start" "-a" "828a1e57cf59d27115e51d36fc6c987a40a612abbb08b7278d1473fe866c1ece", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "828a1e57cf59d27115e51d36fc6c987a40a612abbb08b7278d1473fe866c1ece", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "828a1e57cf59d27115e51d36fc6c987a40a612abbb08b7278d1473fe866c1ece", kill_on_drop: false }`
[INFO] [stdout] 828a1e57cf59d27115e51d36fc6c987a40a612abbb08b7278d1473fe866c1ece
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-90/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-90/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9c17526024748daf05fa4fa499764c3dfe4a153acc59eb785d7ebf49c30fc78d
[INFO] running `Command { std: "docker" "start" "-a" "9c17526024748daf05fa4fa499764c3dfe4a153acc59eb785d7ebf49c30fc78d", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling better_btree v0.2.6 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function is never used: `deref_mut`
[INFO] [stdout]    --> src/node_ref.rs:243:9
[INFO] [stdout]     |
[INFO] [stdout] 243 |     pub fn deref_mut(&mut self) -> &'a mut LeafNode<K, V> {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `deref_mut`
[INFO] [stdout]    --> src/node_ref.rs:255:9
[INFO] [stdout]     |
[INFO] [stdout] 255 |     pub fn deref_mut(&mut self) -> &'a mut InternalNode<K, V> {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `deref`
[INFO] [stdout]    --> src/node_ref.rs:276:9
[INFO] [stdout]     |
[INFO] [stdout] 276 |     pub fn deref(&self) -> &'a LeafNode<K, V> {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `deref`
[INFO] [stdout]    --> src/node_ref.rs:288:9
[INFO] [stdout]     |
[INFO] [stdout] 288 |     pub fn deref(&self) -> &'a InternalNode<K, V> {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.42s
[INFO] running `Command { std: "docker" "inspect" "9c17526024748daf05fa4fa499764c3dfe4a153acc59eb785d7ebf49c30fc78d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9c17526024748daf05fa4fa499764c3dfe4a153acc59eb785d7ebf49c30fc78d", kill_on_drop: false }`
[INFO] [stdout] 9c17526024748daf05fa4fa499764c3dfe4a153acc59eb785d7ebf49c30fc78d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-90/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-90/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 841f08c901ec67d02ad83ddb5583e2d0713dbb3e8f0260569a9e29553663e4f9
[INFO] running `Command { std: "docker" "start" "-a" "841f08c901ec67d02ad83ddb5583e2d0713dbb3e8f0260569a9e29553663e4f9", kill_on_drop: false }`
[INFO] [stdout] warning: associated function is never used: `deref_mut`
[INFO] [stdout]    --> src/node_ref.rs:243:9
[INFO] [stdout]     |
[INFO] [stdout] 243 |     pub fn deref_mut(&mut self) -> &'a mut LeafNode<K, V> {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling better_btree v0.2.6 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function is never used: `deref_mut`
[INFO] [stdout]    --> src/node_ref.rs:255:9
[INFO] [stdout]     |
[INFO] [stdout] 255 |     pub fn deref_mut(&mut self) -> &'a mut InternalNode<K, V> {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `deref`
[INFO] [stdout]    --> src/node_ref.rs:276:9
[INFO] [stdout]     |
[INFO] [stdout] 276 |     pub fn deref(&self) -> &'a LeafNode<K, V> {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `deref`
[INFO] [stdout]    --> src/node_ref.rs:288:9
[INFO] [stdout]     |
[INFO] [stdout] 288 |     pub fn deref(&self) -> &'a InternalNode<K, V> {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `deref_mut`
[INFO] [stdout]    --> src/node_ref.rs:243:9
[INFO] [stdout]     |
[INFO] [stdout] 243 |     pub fn deref_mut(&mut self) -> &'a mut LeafNode<K, V> {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `deref_mut`
[INFO] [stdout]    --> src/node_ref.rs:255:9
[INFO] [stdout]     |
[INFO] [stdout] 255 |     pub fn deref_mut(&mut self) -> &'a mut InternalNode<K, V> {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `deref`
[INFO] [stdout]    --> src/node_ref.rs:276:9
[INFO] [stdout]     |
[INFO] [stdout] 276 |     pub fn deref(&self) -> &'a LeafNode<K, V> {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `deref`
[INFO] [stdout]    --> src/node_ref.rs:288:9
[INFO] [stdout]     |
[INFO] [stdout] 288 |     pub fn deref(&self) -> &'a InternalNode<K, V> {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.50s
[INFO] running `Command { std: "docker" "inspect" "841f08c901ec67d02ad83ddb5583e2d0713dbb3e8f0260569a9e29553663e4f9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "841f08c901ec67d02ad83ddb5583e2d0713dbb3e8f0260569a9e29553663e4f9", kill_on_drop: false }`
[INFO] [stdout] 841f08c901ec67d02ad83ddb5583e2d0713dbb3e8f0260569a9e29553663e4f9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-90/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-90/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] d57c4ad912666a430e9ef25e237091607ba95ce28601a93518c5db4db038f156
[INFO] running `Command { std: "docker" "start" "-a" "d57c4ad912666a430e9ef25e237091607ba95ce28601a93518c5db4db038f156", kill_on_drop: false }`
[INFO] [stderr] warning: associated function is never used: `deref_mut`
[INFO] [stderr]    --> src/node_ref.rs:243:9
[INFO] [stderr]     |
[INFO] [stderr] 243 |     pub fn deref_mut(&mut self) -> &'a mut LeafNode<K, V> {
[INFO] [stderr]     |            ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `deref_mut`
[INFO] [stderr]    --> src/node_ref.rs:255:9
[INFO] [stderr]     |
[INFO] [stderr] 255 |     pub fn deref_mut(&mut self) -> &'a mut InternalNode<K, V> {
[INFO] [stderr]     |            ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `deref`
[INFO] [stderr]    --> src/node_ref.rs:276:9
[INFO] [stderr]     |
[INFO] [stderr] 276 |     pub fn deref(&self) -> &'a LeafNode<K, V> {
[INFO] [stderr]     |            ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `deref`
[INFO] [stderr]    --> src/node_ref.rs:288:9
[INFO] [stderr]     |
[INFO] [stderr] 288 |     pub fn deref(&self) -> &'a InternalNode<K, V> {
[INFO] [stderr]     |            ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `better_btree` (lib) generated 4 warnings
[INFO] [stderr] warning: `better_btree` (lib test) generated 4 warnings (4 duplicates)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.00s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/better_btree-c502f3111f505d3a)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests better_btree
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "d57c4ad912666a430e9ef25e237091607ba95ce28601a93518c5db4db038f156", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d57c4ad912666a430e9ef25e237091607ba95ce28601a93518c5db4db038f156", kill_on_drop: false }`
[INFO] [stdout] d57c4ad912666a430e9ef25e237091607ba95ce28601a93518c5db4db038f156