[INFO] fetching crate better_btree 0.2.6...
[INFO] testing better_btree-0.2.6 against master#62efba8a050c64249dab942951bb28f710208bc8 for pr-90799
[INFO] extracting crate better_btree 0.2.6 into /workspace/builds/worker-43/source
[INFO] validating manifest of crates.io crate better_btree 0.2.6 on toolchain 62efba8a050c64249dab942951bb28f710208bc8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "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-43/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "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" "+62efba8a050c64249dab942951bb28f710208bc8" "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-43/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-43/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" "+62efba8a050c64249dab942951bb28f710208bc8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 556eed61d1d57a78401ccfdb58c926ac26188a006a7da3cea390c0967a1704e4
[INFO] running `Command { std: "docker" "start" "-a" "556eed61d1d57a78401ccfdb58c926ac26188a006a7da3cea390c0967a1704e4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "556eed61d1d57a78401ccfdb58c926ac26188a006a7da3cea390c0967a1704e4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "556eed61d1d57a78401ccfdb58c926ac26188a006a7da3cea390c0967a1704e4", kill_on_drop: false }`
[INFO] [stdout] 556eed61d1d57a78401ccfdb58c926ac26188a006a7da3cea390c0967a1704e4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-43/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-43/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" "+62efba8a050c64249dab942951bb28f710208bc8" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7c6cef33d0649e83dd671ae209137d1578809d575dc3cd9dc062def114abd147
[INFO] running `Command { std: "docker" "start" "-a" "7c6cef33d0649e83dd671ae209137d1578809d575dc3cd9dc062def114abd147", kill_on_drop: false }`
[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 1.51s
[INFO] running `Command { std: "docker" "inspect" "7c6cef33d0649e83dd671ae209137d1578809d575dc3cd9dc062def114abd147", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7c6cef33d0649e83dd671ae209137d1578809d575dc3cd9dc062def114abd147", kill_on_drop: false }`
[INFO] [stdout] 7c6cef33d0649e83dd671ae209137d1578809d575dc3cd9dc062def114abd147
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-43/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-43/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" "+62efba8a050c64249dab942951bb28f710208bc8" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 900d1bf9f5186fc053a84586d7221f27a3d56651f42f66be54ede3a6ff0bbf0c
[INFO] running `Command { std: "docker" "start" "-a" "900d1bf9f5186fc053a84586d7221f27a3d56651f42f66be54ede3a6ff0bbf0c", 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 0.64s
[INFO] running `Command { std: "docker" "inspect" "900d1bf9f5186fc053a84586d7221f27a3d56651f42f66be54ede3a6ff0bbf0c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "900d1bf9f5186fc053a84586d7221f27a3d56651f42f66be54ede3a6ff0bbf0c", kill_on_drop: false }`
[INFO] [stdout] 900d1bf9f5186fc053a84586d7221f27a3d56651f42f66be54ede3a6ff0bbf0c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-43/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-43/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" "+62efba8a050c64249dab942951bb28f710208bc8" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 6a07708fdcb3952d12ab90e393ad92f3075a2745d1a4ee64dc1dc1bfb9c592ef
[INFO] running `Command { std: "docker" "start" "-a" "6a07708fdcb3952d12ab90e393ad92f3075a2745d1a4ee64dc1dc1bfb9c592ef", 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 0.01s
[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" "6a07708fdcb3952d12ab90e393ad92f3075a2745d1a4ee64dc1dc1bfb9c592ef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6a07708fdcb3952d12ab90e393ad92f3075a2745d1a4ee64dc1dc1bfb9c592ef", kill_on_drop: false }`
[INFO] [stdout] 6a07708fdcb3952d12ab90e393ad92f3075a2745d1a4ee64dc1dc1bfb9c592ef