[INFO] cloning repository https://github.com/kmilinho/rust-kv [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kmilinho/rust-kv" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkmilinho%2Frust-kv", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkmilinho%2Frust-kv'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 7a71a95819fd0fae2d337cf88d5b21e7236f16c1 [INFO] checking kmilinho/rust-kv against try#8b72f65b805cbe4c261de45030d663f524f27376 for pr-78991 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkmilinho%2Frust-kv" "/workspace/builds/worker-10/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-10/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/kmilinho/rust-kv on toolchain 8b72f65b805cbe4c261de45030d663f524f27376 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8b72f65b805cbe4c261de45030d663f524f27376" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/kmilinho/rust-kv [INFO] finished tweaking git repo https://github.com/kmilinho/rust-kv [INFO] tweaked toml for git repo https://github.com/kmilinho/rust-kv written to /workspace/builds/worker-10/source/Cargo.toml [INFO] crate git repo https://github.com/kmilinho/rust-kv already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8b72f65b805cbe4c261de45030d663f524f27376" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded ucd-util v0.1.5 [INFO] [stderr] Downloaded serde v1.0.98 [INFO] [stderr] Downloaded serde_derive v1.0.98 [INFO] [stderr] Downloaded regex-syntax v0.6.10 [INFO] [stderr] Downloaded regex v1.2.0 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+8b72f65b805cbe4c261de45030d663f524f27376" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] bc44145cc836d07b2f47f46afa314dfb4c0202a9e90a0084ccbbdc29670e8db9 [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" "bc44145cc836d07b2f47f46afa314dfb4c0202a9e90a0084ccbbdc29670e8db9", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "bc44145cc836d07b2f47f46afa314dfb4c0202a9e90a0084ccbbdc29670e8db9", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "bc44145cc836d07b2f47f46afa314dfb4c0202a9e90a0084ccbbdc29670e8db9", kill_on_drop: false }` [INFO] [stdout] bc44145cc836d07b2f47f46afa314dfb4c0202a9e90a0084ccbbdc29670e8db9 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+8b72f65b805cbe4c261de45030d663f524f27376" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 4db8471947646d19985d3f034167d7e94c077f7e63937c17bc3a1d3542c86aa6 [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" "4db8471947646d19985d3f034167d7e94c077f7e63937c17bc3a1d3542c86aa6", kill_on_drop: false }` [INFO] [stderr] Compiling proc-macro2 v0.4.30 [INFO] [stderr] Compiling syn v0.15.42 [INFO] [stderr] Compiling autocfg v0.1.5 [INFO] [stderr] Compiling memchr v2.2.1 [INFO] [stderr] Checking lazy_static v1.3.0 [INFO] [stderr] Compiling serde v1.0.98 [INFO] [stderr] Compiling ryu v1.0.0 [INFO] [stderr] Checking ucd-util v0.1.5 [INFO] [stderr] Checking itoa v0.4.4 [INFO] [stderr] Compiling escargot v0.4.0 [INFO] [stderr] Checking predicates-core v1.0.0 [INFO] [stderr] Checking utf8-ranges v1.0.3 [INFO] [stderr] Checking difference v2.0.0 [INFO] [stderr] Checking treeline v0.1.0 [INFO] [stderr] Checking normalize-line-endings v0.2.2 [INFO] [stderr] Checking kvs v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused variable: `key` [INFO] [stdout] --> src/lib.rs:9:23 [INFO] [stdout] | [INFO] [stdout] 9 | pub fn set(&self, key: String, value: String) { [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_key` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `value` [INFO] [stdout] --> src/lib.rs:9:36 [INFO] [stdout] | [INFO] [stdout] 9 | pub fn set(&self, key: String, value: String) { [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_value` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `key` [INFO] [stdout] --> src/lib.rs:13:23 [INFO] [stdout] | [INFO] [stdout] 13 | pub fn get(&self, key: String) -> Option { [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_key` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `key` [INFO] [stdout] --> src/lib.rs:17:26 [INFO] [stdout] | [INFO] [stdout] 17 | pub fn remove(&self, key: String) -> Option { [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_key` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking log v0.4.8 [INFO] [stderr] Checking thread_local v0.3.6 [INFO] [stderr] Checking predicates-tree v1.0.0 [INFO] [stderr] Checking regex-syntax v0.6.10 [INFO] [stdout] warning: unused import: `std::env` [INFO] [stdout] --> src/bin/kvs.rs:1:5 [INFO] [stdout] | [INFO] [stdout] 1 | use std::env; [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Compiling num-traits v0.2.8 [INFO] [stderr] Checking aho-corasick v0.7.4 [INFO] [stderr] Compiling quote v0.6.13 [INFO] [stderr] Checking float-cmp v0.4.0 [INFO] [stderr] Checking regex v1.2.0 [INFO] [stderr] Checking predicates v1.0.1 [INFO] [stderr] Compiling serde_derive v1.0.98 [INFO] [stderr] Checking serde_json v1.0.40 [INFO] [stderr] Checking assert_cmd v0.11.1 [INFO] [stdout] warning: unused variable: `key` [INFO] [stdout] --> src/lib.rs:9:23 [INFO] [stdout] | [INFO] [stdout] 9 | pub fn set(&self, key: String, value: String) { [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_key` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `value` [INFO] [stdout] --> src/lib.rs:9:36 [INFO] [stdout] | [INFO] [stdout] 9 | pub fn set(&self, key: String, value: String) { [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_value` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `key` [INFO] [stdout] --> src/lib.rs:13:23 [INFO] [stdout] | [INFO] [stdout] 13 | pub fn get(&self, key: String) -> Option { [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_key` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `key` [INFO] [stdout] --> src/lib.rs:17:26 [INFO] [stdout] | [INFO] [stdout] 17 | pub fn remove(&self, key: String) -> Option { [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_key` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> tests/tests.rs:118:9 [INFO] [stdout] | [INFO] [stdout] 118 | let mut store = KvStore::new(); [INFO] [stdout] | ----^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> tests/tests.rs:130:9 [INFO] [stdout] | [INFO] [stdout] 130 | let mut store = KvStore::new(); [INFO] [stdout] | ----^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> tests/tests.rs:142:9 [INFO] [stdout] | [INFO] [stdout] 142 | let mut store = KvStore::new(); [INFO] [stdout] | ----^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> tests/tests.rs:150:9 [INFO] [stdout] | [INFO] [stdout] 150 | let mut store = KvStore::new(); [INFO] [stdout] | ----^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::env` [INFO] [stdout] --> src/bin/kvs.rs:1:5 [INFO] [stdout] | [INFO] [stdout] 1 | use std::env; [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 49.41s [INFO] running `Command { std: "docker" "inspect" "4db8471947646d19985d3f034167d7e94c077f7e63937c17bc3a1d3542c86aa6", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "4db8471947646d19985d3f034167d7e94c077f7e63937c17bc3a1d3542c86aa6", kill_on_drop: false }` [INFO] [stdout] 4db8471947646d19985d3f034167d7e94c077f7e63937c17bc3a1d3542c86aa6