[INFO] fetching crate art-tree 0.1.0...
[INFO] testing art-tree-0.1.0 against master#62efba8a050c64249dab942951bb28f710208bc8 for pr-90799
[INFO] extracting crate art-tree 0.1.0 into /workspace/builds/worker-37/source
[INFO] validating manifest of crates.io crate art-tree 0.1.0 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 art-tree 0.1.0
[INFO] finished tweaking crates.io crate art-tree 0.1.0
[INFO] tweaked toml for crates.io crate art-tree 0.1.0 written to /workspace/builds/worker-37/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] running `Command { std: "/workspace/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-37/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-37/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] 0aa37dc004a1e0655fd5eec0e16b3b6eaa8085a9d85869f39ee319176c26ee7e
[INFO] running `Command { std: "docker" "start" "-a" "0aa37dc004a1e0655fd5eec0e16b3b6eaa8085a9d85869f39ee319176c26ee7e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0aa37dc004a1e0655fd5eec0e16b3b6eaa8085a9d85869f39ee319176c26ee7e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0aa37dc004a1e0655fd5eec0e16b3b6eaa8085a9d85869f39ee319176c26ee7e", kill_on_drop: false }`
[INFO] [stdout] 0aa37dc004a1e0655fd5eec0e16b3b6eaa8085a9d85869f39ee319176c26ee7e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-37/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-37/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] 0a5dd025190675ac7d56e033c3d5962fd25aea87e1826267d8ca16de35a3cc3f
[INFO] running `Command { std: "docker" "start" "-a" "0a5dd025190675ac7d56e033c3d5962fd25aea87e1826267d8ca16de35a3cc3f", kill_on_drop: false }`
[INFO] [stderr]    Compiling art-tree v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]    --> src/node.rs:244:9
[INFO] [stdout]     |
[INFO] [stdout] 241 |               return Some(val);
[INFO] [stdout]     |               ---------------- any code following this expression is unreachable
[INFO] [stdout] ...
[INFO] [stdout] 244 | /         for i in 0..self.keys.len() {
[INFO] [stdout] 245 | |             // find key which uses last cell inside values array
[INFO] [stdout] 246 | |             if self.keys[i] == self.len as u8 {
[INFO] [stdout] 247 | |                 // move value of key which points to last array cell
[INFO] [stdout] ...   |
[INFO] [stdout] 252 | |             }
[INFO] [stdout] 253 | |         }
[INFO] [stdout]     | |_________^ unreachable statement
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.40s
[INFO] running `Command { std: "docker" "inspect" "0a5dd025190675ac7d56e033c3d5962fd25aea87e1826267d8ca16de35a3cc3f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0a5dd025190675ac7d56e033c3d5962fd25aea87e1826267d8ca16de35a3cc3f", kill_on_drop: false }`
[INFO] [stdout] 0a5dd025190675ac7d56e033c3d5962fd25aea87e1826267d8ca16de35a3cc3f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-37/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-37/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] 00fedc5b7d88d534619d98c7521f1cdf2c1d0b7fd6c105e30a8cb447d9eeea1d
[INFO] running `Command { std: "docker" "start" "-a" "00fedc5b7d88d534619d98c7521f1cdf2c1d0b7fd6c105e30a8cb447d9eeea1d", kill_on_drop: false }`
[INFO] [stderr]    Compiling semver v1.0.4
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling either v1.6.1
[INFO] [stderr]    Compiling syn v1.0.82
[INFO] [stderr]    Compiling plotters-backend v0.3.2
[INFO] [stderr]    Compiling regex-automata v0.1.10
[INFO] [stderr]    Compiling same-file v1.0.6
[INFO] [stderr]    Compiling half v1.8.2
[INFO] [stderr]    Compiling oorandom v11.1.3
[INFO] [stderr]    Compiling memoffset v0.6.4
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]    --> src/node.rs:244:9
[INFO] [stdout]     |
[INFO] [stdout] 241 |               return Some(val);
[INFO] [stdout]     |               ---------------- any code following this expression is unreachable
[INFO] [stdout] ...
[INFO] [stdout] 244 | /         for i in 0..self.keys.len() {
[INFO] [stdout] 245 | |             // find key which uses last cell inside values array
[INFO] [stdout] 246 | |             if self.keys[i] == self.len as u8 {
[INFO] [stdout] 247 | |                 // move value of key which points to last array cell
[INFO] [stdout] ...   |
[INFO] [stdout] 252 | |             }
[INFO] [stdout] 253 | |         }
[INFO] [stdout]     | |_________^ unreachable statement
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling rayon v1.5.1
[INFO] [stderr]    Compiling regex v1.5.4
[INFO] [stderr]    Compiling crossbeam-utils v0.8.5
[INFO] [stderr]    Compiling clap v2.34.0
[INFO] [stderr]    Compiling serde_json v1.0.72
[INFO] [stderr]    Compiling walkdir v2.3.2
[INFO] [stderr]    Compiling itertools v0.10.1
[INFO] [stderr]    Compiling serde_cbor v0.11.2
[INFO] [stderr]    Compiling plotters-svg v0.3.1
[INFO] [stderr]    Compiling crossbeam-channel v0.5.1
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.5
[INFO] [stderr]    Compiling rustc_version v0.4.0
[INFO] [stderr]    Compiling csv-core v0.1.10
[INFO] [stderr]    Compiling bstr v0.2.17
[INFO] [stderr]    Compiling crossbeam-deque v0.8.1
[INFO] [stderr]    Compiling cast v0.2.7
[INFO] [stderr]    Compiling tinytemplate v1.2.1
[INFO] [stderr]    Compiling rayon-core v1.9.1
[INFO] [stderr]    Compiling csv v1.1.6
[INFO] [stderr]    Compiling plotters v0.3.1
[INFO] [stderr]    Compiling criterion-plot v0.4.4
[INFO] [stderr]    Compiling serde_derive v1.0.130
[INFO] [stderr]    Compiling criterion v0.3.5
[INFO] [stderr]    Compiling art-tree v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]    --> src/node.rs:244:9
[INFO] [stdout]     |
[INFO] [stdout] 241 |               return Some(val);
[INFO] [stdout]     |               ---------------- any code following this expression is unreachable
[INFO] [stdout] ...
[INFO] [stdout] 244 | /         for i in 0..self.keys.len() {
[INFO] [stdout] 245 | |             // find key which uses last cell inside values array
[INFO] [stdout] 246 | |             if self.keys[i] == self.len as u8 {
[INFO] [stdout] 247 | |                 // move value of key which points to last array cell
[INFO] [stdout] ...   |
[INFO] [stdout] 252 | |             }
[INFO] [stdout] 253 | |         }
[INFO] [stdout]     | |_________^ unreachable statement
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 21.35s
[INFO] running `Command { std: "docker" "inspect" "00fedc5b7d88d534619d98c7521f1cdf2c1d0b7fd6c105e30a8cb447d9eeea1d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "00fedc5b7d88d534619d98c7521f1cdf2c1d0b7fd6c105e30a8cb447d9eeea1d", kill_on_drop: false }`
[INFO] [stdout] 00fedc5b7d88d534619d98c7521f1cdf2c1d0b7fd6c105e30a8cb447d9eeea1d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-37/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-37/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] 5da42d52954256512b08980e5478378490174535e0730a5d09ee7a6f5cf48b2f
[INFO] running `Command { std: "docker" "start" "-a" "5da42d52954256512b08980e5478378490174535e0730a5d09ee7a6f5cf48b2f", kill_on_drop: false }`
[INFO] [stderr] warning: unreachable statement
[INFO] [stderr]    --> src/node.rs:244:9
[INFO] [stderr]     |
[INFO] [stderr] 241 |               return Some(val);
[INFO] [stderr]     |               ---------------- any code following this expression is unreachable
[INFO] [stderr] ...
[INFO] [stderr] 244 | /         for i in 0..self.keys.len() {
[INFO] [stderr] 245 | |             // find key which uses last cell inside values array
[INFO] [stderr] 246 | |             if self.keys[i] == self.len as u8 {
[INFO] [stderr] 247 | |                 // move value of key which points to last array cell
[INFO] [stderr] ...   |
[INFO] [stderr] 252 | |             }
[INFO] [stderr] 253 | |         }
[INFO] [stderr]     | |_________^ unreachable statement
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `art-tree` (lib) generated 1 warning
[INFO] [stderr] warning: `art-tree` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.22s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/art_tree-6be78c85d4faacbd)
[INFO] [stdout] 
[INFO] [stdout] running 25 tests
[INFO] [stdout] test node::tests::flat_node ... ok
[INFO] [stdout] test node::tests::node256 ... ok
[INFO] [stdout] test node::tests::node48 ... ok
[INFO] [stdout] test scanner::tests::double_ended_iter ... ok
[INFO] [stdout] test scanner::tests::iter_with_long_prefix ... ok
[INFO] [stdout] test scanner::tests::seq_insert_u8 ... ok
[INFO] [stdout] test tests::seq_insert_u8 ... ok
[INFO] [stdout] test tests::seq_remove_u8 ... ok
[INFO] [stdout] test scanner::tests::range_scan_with_long_prefix ... ok
[INFO] [stdout] test scanner::tests::range_scan_on_sequential_u32_keys ... ok
[INFO] [stdout] test tests::seq_insert_u32 ... ok
[INFO] [stdout] test tests::seq_remove_u32 ... ok
[INFO] [stdout] test tests::insert_with_long_prefix ... ok
[INFO] [stdout] test scanner::tests::seq_insert_u16 ... ok
[INFO] [stdout] test tests::seq_insert_u16 ... ok
[INFO] [stdout] test tests::seq_remove_u16 ... ok
[INFO] [stdout] test tests::mixed_upsert_and_delete ... ok
[INFO] [stdout] test tests::upsert ... ok
[INFO] [stdout] test scanner::tests::double_ended_iter_seq_keys ... ok
[INFO] [stdout] test tests::existed_elements_cannot_be_inserted ... ok
[INFO] [stdout] test scanner::tests::range_scan_on_sequential_u64_keys ... ok
[INFO] [stdout] test tests::seq_insert_u64 ... ok
[INFO] [stdout] test tests::remove_with_long_prefix ... ok
[INFO] [stdout] test tests::seq_remove_u64 ... ok
[INFO] [stdout] test tests::modifications_with_seq_keys_with_increasing_size ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 25 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 43.43s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests art-tree
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs - (line 6) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.79s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "5da42d52954256512b08980e5478378490174535e0730a5d09ee7a6f5cf48b2f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5da42d52954256512b08980e5478378490174535e0730a5d09ee7a6f5cf48b2f", kill_on_drop: false }`
[INFO] [stdout] 5da42d52954256512b08980e5478378490174535e0730a5d09ee7a6f5cf48b2f