[INFO] cloning repository https://github.com/zarix908/logsdb
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/zarix908/logsdb" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzarix908%2Flogsdb", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzarix908%2Flogsdb'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 35f0e079203e5817e6d613184d013ebd4bf7c8cd
[INFO] checking zarix908/logsdb against try#ea2bf32540662c61547071aad6cf0851a0b02f58 for pr-96376
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzarix908%2Flogsdb" "/workspace/builds/worker-67/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-67/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/zarix908/logsdb on toolchain ea2bf32540662c61547071aad6cf0851a0b02f58
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ea2bf32540662c61547071aad6cf0851a0b02f58" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/zarix908/logsdb
[INFO] finished tweaking git repo https://github.com/zarix908/logsdb
[INFO] tweaked toml for git repo https://github.com/zarix908/logsdb written to /workspace/builds/worker-67/source/Cargo.toml
[INFO] crate git repo https://github.com/zarix908/logsdb already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ea2bf32540662c61547071aad6cf0851a0b02f58" "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-67/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-67/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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+ea2bf32540662c61547071aad6cf0851a0b02f58" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ffacdf7f2df0a51025514f94456016644adff7e55fa5aa561c00533febf8df45
[INFO] running `Command { std: "docker" "start" "-a" "ffacdf7f2df0a51025514f94456016644adff7e55fa5aa561c00533febf8df45", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ffacdf7f2df0a51025514f94456016644adff7e55fa5aa561c00533febf8df45", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ffacdf7f2df0a51025514f94456016644adff7e55fa5aa561c00533febf8df45", kill_on_drop: false }`
[INFO] [stdout] ffacdf7f2df0a51025514f94456016644adff7e55fa5aa561c00533febf8df45
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-67/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-67/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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+ea2bf32540662c61547071aad6cf0851a0b02f58" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4ecbf2baacedfb0cce1abcc47a1a44122ba4eaad7b1bc7cfebe4355e0c44f9f8
[INFO] running `Command { std: "docker" "start" "-a" "4ecbf2baacedfb0cce1abcc47a1a44122ba4eaad7b1bc7cfebe4355e0c44f9f8", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling syn v1.0.85
[INFO] [stderr]     Checking predicates-core v1.0.2
[INFO] [stderr]     Checking difflib v0.4.0
[INFO] [stderr]     Checking termtree v0.2.3
[INFO] [stderr]     Checking normalize-line-endings v0.3.0
[INFO] [stderr]     Checking fragile v1.0.0
[INFO] [stderr]     Checking downcast v0.11.0
[INFO] [stderr]    Compiling libc v0.2.112
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling proc-macro2 v1.0.36
[INFO] [stderr]     Checking itertools v0.10.3
[INFO] [stderr]     Checking predicates-tree v1.0.4
[INFO] [stderr]    Compiling quote v1.0.14
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking float-cmp v0.9.0
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]     Checking predicates v2.1.0
[INFO] [stderr]     Checking skiplist v0.2.10
[INFO] [stderr]     Checking logdb v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `LogLevel`
[INFO] [stdout]  --> src/engine.rs:4:16
[INFO] [stdout]   |
[INFO] [stdout] 4 |     log::{Log, LogLevel},
[INFO] [stdout]   |                ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Engine`
[INFO] [stdout]  --> src/engine.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub struct Engine {
[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: `new`
[INFO] [stdout]   --> src/engine.rs:16:12
[INFO] [stdout]    |
[INFO] [stdout] 16 |     pub fn new(writer: Box<dyn Writer>, max_len: usize) -> Engine {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `insert`
[INFO] [stdout]   --> src/engine.rs:24:12
[INFO] [stdout]    |
[INFO] [stdout] 24 |     pub fn insert(&mut self, log: Log) {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `INFO`
[INFO] [stdout]  --> src/log.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     INFO = 0,
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `DEBUG`
[INFO] [stdout]  --> src/log.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     DEBUG,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `WARN`
[INFO] [stdout]  --> src/log.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     WARN,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `ERROR`
[INFO] [stdout]  --> src/log.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     ERROR,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `FATAL`
[INFO] [stdout]  --> src/log.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     FATAL,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `PANIC`
[INFO] [stdout]   --> src/log.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     PANIC,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `TRACE`
[INFO] [stdout]   --> src/log.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 |     TRACE,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 11 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling mockall_derive v0.11.0
[INFO] [stderr]     Checking mockall v0.11.0
[INFO] [stdout] warning: variant is never constructed: `WARN`
[INFO] [stdout]  --> src/log.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     WARN,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `ERROR`
[INFO] [stdout]  --> src/log.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     ERROR,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `FATAL`
[INFO] [stdout]  --> src/log.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     FATAL,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `PANIC`
[INFO] [stdout]   --> src/log.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     PANIC,
[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 1m 53s
[INFO] running `Command { std: "docker" "inspect" "4ecbf2baacedfb0cce1abcc47a1a44122ba4eaad7b1bc7cfebe4355e0c44f9f8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4ecbf2baacedfb0cce1abcc47a1a44122ba4eaad7b1bc7cfebe4355e0c44f9f8", kill_on_drop: false }`
[INFO] [stdout] 4ecbf2baacedfb0cce1abcc47a1a44122ba4eaad7b1bc7cfebe4355e0c44f9f8