[INFO] cloning repository https://github.com/Yangfisher1/lsm-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Yangfisher1/lsm-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FYangfisher1%2Flsm-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FYangfisher1%2Flsm-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2b9e0a2431084b9b85e4414f94fe680d5b9f0b5e
[INFO] checking Yangfisher1/lsm-rust against try#51b1964e35e5e26f8cd938940f0da6f7b5cc54fc for pr-138176
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FYangfisher1%2Flsm-rust" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Yangfisher1/lsm-rust on toolchain 51b1964e35e5e26f8cd938940f0da6f7b5cc54fc
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+51b1964e35e5e26f8cd938940f0da6f7b5cc54fc" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Yangfisher1/lsm-rust
[INFO] finished tweaking git repo https://github.com/Yangfisher1/lsm-rust
[INFO] tweaked toml for git repo https://github.com/Yangfisher1/lsm-rust written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/Yangfisher1/lsm-rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+51b1964e35e5e26f8cd938940f0da6f7b5cc54fc" "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-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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@sha256:1680c8fbd8dfb46fcd6d22e546df16ab0e007457dc29fcd9e987cdd5077fd1af" "/opt/rustwide/cargo-home/bin/cargo" "+51b1964e35e5e26f8cd938940f0da6f7b5cc54fc" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d4592f4426e379438197077875cc8d2dd8443e59ef903fb258464981937e357b
[INFO] running `Command { std: "docker" "start" "-a" "d4592f4426e379438197077875cc8d2dd8443e59ef903fb258464981937e357b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d4592f4426e379438197077875cc8d2dd8443e59ef903fb258464981937e357b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d4592f4426e379438197077875cc8d2dd8443e59ef903fb258464981937e357b", kill_on_drop: false }`
[INFO] [stdout] d4592f4426e379438197077875cc8d2dd8443e59ef903fb258464981937e357b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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" "RUSTDOCFLAGS=--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@sha256:1680c8fbd8dfb46fcd6d22e546df16ab0e007457dc29fcd9e987cdd5077fd1af" "/opt/rustwide/cargo-home/bin/cargo" "+51b1964e35e5e26f8cd938940f0da6f7b5cc54fc" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 60b8ad3a9de64be6c4233383ae2dcfee68fa09753fc76943dc167b0af102e851
[INFO] running `Command { std: "docker" "start" "-a" "60b8ad3a9de64be6c4233383ae2dcfee68fa09753fc76943dc167b0af102e851", kill_on_drop: false }`
[INFO] [stderr]     Checking lsm-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `pairs`
[INFO] [stdout]    --> src/sstable/mod.rs:121:21
[INFO] [stdout]     |
[INFO] [stdout] 121 |     fn sortSSTables(pairs: Vec<SSTable>) -> (u32, Vec<KVPair>) {
[INFO] [stdout]     |                     ^^^^^ help: if this is intentional, prefix it with an underscore: `_pairs`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `c_time` is never read
[INFO] [stdout]   --> src/sstable/mod.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub struct SSTable {
[INFO] [stdout]    |            ------- field in this struct
[INFO] [stdout] 12 |     c_time: u32,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `slice_generator` is never used
[INFO] [stdout]   --> src/sstable/mod.rs:38:4
[INFO] [stdout]    |
[INFO] [stdout] 38 | fn slice_generator(buffer: &Vec<u8>, index: usize) -> [u8; 4] {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `new` and `sortSSTables` are never used
[INFO] [stdout]    --> src/sstable/mod.rs:48:12
[INFO] [stdout]     |
[INFO] [stdout] 47  | impl SSTable {
[INFO] [stdout]     | ------------ associated functions in this implementation
[INFO] [stdout] 48  |     pub fn new(path: &str) -> Result<Self, std::io::Error> {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 121 |     fn sortSSTables(pairs: Vec<SSTable>) -> (u32, Vec<KVPair>) {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `sortSSTables` should have a snake case name
[INFO] [stdout]    --> src/sstable/mod.rs:121:8
[INFO] [stdout]     |
[INFO] [stdout] 121 |     fn sortSSTables(pairs: Vec<SSTable>) -> (u32, Vec<KVPair>) {
[INFO] [stdout]     |        ^^^^^^^^^^^^ help: convert the identifier to snake case: `sort_sstables`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `pairs`
[INFO] [stdout]    --> src/sstable/mod.rs:121:21
[INFO] [stdout]     |
[INFO] [stdout] 121 |     fn sortSSTables(pairs: Vec<SSTable>) -> (u32, Vec<KVPair>) {
[INFO] [stdout]     |                     ^^^^^ help: if this is intentional, prefix it with an underscore: `_pairs`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `c_time` is never read
[INFO] [stdout]   --> src/sstable/mod.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub struct SSTable {
[INFO] [stdout]    |            ------- field in this struct
[INFO] [stdout] 12 |     c_time: u32,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `sortSSTables` is never used
[INFO] [stdout]    --> src/sstable/mod.rs:121:8
[INFO] [stdout]     |
[INFO] [stdout] 47  | impl SSTable {
[INFO] [stdout]     | ------------ associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 121 |     fn sortSSTables(pairs: Vec<SSTable>) -> (u32, Vec<KVPair>) {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `sortSSTables` should have a snake case name
[INFO] [stdout]    --> src/sstable/mod.rs:121:8
[INFO] [stdout]     |
[INFO] [stdout] 121 |     fn sortSSTables(pairs: Vec<SSTable>) -> (u32, Vec<KVPair>) {
[INFO] [stdout]     |        ^^^^^^^^^^^^ help: convert the identifier to snake case: `sort_sstables`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.06s
[INFO] running `Command { std: "docker" "inspect" "60b8ad3a9de64be6c4233383ae2dcfee68fa09753fc76943dc167b0af102e851", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "60b8ad3a9de64be6c4233383ae2dcfee68fa09753fc76943dc167b0af102e851", kill_on_drop: false }`
[INFO] [stdout] 60b8ad3a9de64be6c4233383ae2dcfee68fa09753fc76943dc167b0af102e851