[INFO] fetching crate neutrondb 0.9.19...
[INFO] testing neutrondb-0.9.19 against master#62efba8a050c64249dab942951bb28f710208bc8 for pr-90799
[INFO] extracting crate neutrondb 0.9.19 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate neutrondb 0.9.19 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 neutrondb 0.9.19
[INFO] finished tweaking crates.io crate neutrondb 0.9.19
[INFO] tweaked toml for crates.io crate neutrondb 0.9.19 written to /workspace/builds/worker-4/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-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] dcc03eee992aae85efc951d6c2ed83f8c665ccb02fc77dfd0285d32554f5096a
[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" "dcc03eee992aae85efc951d6c2ed83f8c665ccb02fc77dfd0285d32554f5096a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dcc03eee992aae85efc951d6c2ed83f8c665ccb02fc77dfd0285d32554f5096a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dcc03eee992aae85efc951d6c2ed83f8c665ccb02fc77dfd0285d32554f5096a", kill_on_drop: false }`
[INFO] [stdout] dcc03eee992aae85efc951d6c2ed83f8c665ccb02fc77dfd0285d32554f5096a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] ec86f92ed1c0281716ba0f9e00c802f4465fc6ab0ced29c85c3bab28a0826fd2
[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" "ec86f92ed1c0281716ba0f9e00c802f4465fc6ab0ced29c85c3bab28a0826fd2", kill_on_drop: false }`
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]    Compiling typenum v1.14.0
[INFO] [stderr]    Compiling cc v1.0.72
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling opaque-debug v0.3.0
[INFO] [stderr]    Compiling cpufeatures v0.2.1
[INFO] [stderr]    Compiling constant_time_eq v0.1.5
[INFO] [stderr]    Compiling arrayref v0.3.6
[INFO] [stderr]    Compiling arrayvec v0.7.2
[INFO] [stderr]    Compiling stellar-notation v0.9.18
[INFO] [stderr]    Compiling generic-array v0.14.4
[INFO] [stderr]    Compiling blake3 v1.2.0
[INFO] [stderr]    Compiling digest v0.9.0
[INFO] [stderr]    Compiling block-buffer v0.9.0
[INFO] [stderr]    Compiling sha2 v0.9.8
[INFO] [stderr]    Compiling sha3 v0.9.1
[INFO] [stderr]    Compiling neutrondb v0.9.19 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `object`
[INFO] [stdout]  --> src/linked_list/deserialize.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn object(bytes: &Vec<u8>) -> Result<(String, String), Box<dyn Error>> {
[INFO] [stdout]   |        ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_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 11.83s
[INFO] running `Command { std: "docker" "inspect" "ec86f92ed1c0281716ba0f9e00c802f4465fc6ab0ced29c85c3bab28a0826fd2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ec86f92ed1c0281716ba0f9e00c802f4465fc6ab0ced29c85c3bab28a0826fd2", kill_on_drop: false }`
[INFO] [stdout] ec86f92ed1c0281716ba0f9e00c802f4465fc6ab0ced29c85c3bab28a0826fd2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] 1a73a7551baa2ce8f7ebddf5fc1ef4f00b5313387a55731a2d0afdb65de01d4b
[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" "1a73a7551baa2ce8f7ebddf5fc1ef4f00b5313387a55731a2d0afdb65de01d4b", kill_on_drop: false }`
[INFO] [stderr]    Compiling neutrondb v0.9.19 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `object`
[INFO] [stdout]  --> src/linked_list/deserialize.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn object(bytes: &Vec<u8>) -> Result<(String, String), Box<dyn Error>> {
[INFO] [stdout]   |        ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `object`
[INFO] [stdout]  --> src/linked_list/deserialize.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn object(bytes: &Vec<u8>) -> Result<(String, String), Box<dyn Error>> {
[INFO] [stdout]   |        ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_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 1.01s
[INFO] running `Command { std: "docker" "inspect" "1a73a7551baa2ce8f7ebddf5fc1ef4f00b5313387a55731a2d0afdb65de01d4b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1a73a7551baa2ce8f7ebddf5fc1ef4f00b5313387a55731a2d0afdb65de01d4b", kill_on_drop: false }`
[INFO] [stdout] 1a73a7551baa2ce8f7ebddf5fc1ef4f00b5313387a55731a2d0afdb65de01d4b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] 860a36afb74d53cfbc4a4dd86c26a7dce5557b7c6f894f39b88af7014fb62a69
[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" "860a36afb74d53cfbc4a4dd86c26a7dce5557b7c6f894f39b88af7014fb62a69", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr] warning: function is never used: `object`
[INFO] [stdout] running 0 tests
[INFO] [stderr]  --> src/linked_list/deserialize.rs:7:8
[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] 7 | pub fn object(bytes: &Vec<u8>) -> Result<(String, String), Box<dyn Error>> {
[INFO] [stdout] 
[INFO] [stderr]   |        ^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `neutrondb` (lib) generated 1 warning
[INFO] [stderr] warning: `neutrondb` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/neutrondb-151ffd274a187a70)
[INFO] [stderr]    Doc-tests neutrondb
[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" "860a36afb74d53cfbc4a4dd86c26a7dce5557b7c6f894f39b88af7014fb62a69", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "860a36afb74d53cfbc4a4dd86c26a7dce5557b7c6f894f39b88af7014fb62a69", kill_on_drop: false }`
[INFO] [stdout] 860a36afb74d53cfbc4a4dd86c26a7dce5557b7c6f894f39b88af7014fb62a69