[INFO] updating cached repository https://github.com/ThomWright/kvs
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 9b49b297168baadfc200d5920ad0bff116b69a58
[INFO] checking ThomWright/kvs against try#1a608893c03d7722effeb0058e82770bd36b4b3c for pr-66504-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FThomWright%2Fkvs" "/workspace/builds/worker-3/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ThomWright/kvs on toolchain 1a608893c03d7722effeb0058e82770bd36b4b3c
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1a608893c03d7722effeb0058e82770bd36b4b3c" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/ThomWright/kvs
[INFO] finished tweaking git repo https://github.com/ThomWright/kvs
[INFO] tweaked toml for git repo https://github.com/ThomWright/kvs written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/ThomWright/kvs already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1a608893c03d7722effeb0058e82770bd36b4b3c" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1a608893c03d7722effeb0058e82770bd36b4b3c" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 3737c8707b4213290268f99285814f1f49be5c201be3e50df52eadc0fe2855a0
[INFO] running `"docker" "start" "-a" "3737c8707b4213290268f99285814f1f49be5c201be3e50df52eadc0fe2855a0"`
[INFO] [stderr]    Compiling libc v0.2.60
[INFO] [stderr]    Compiling autocfg v0.1.5
[INFO] [stderr]    Compiling syn v0.15.42
[INFO] [stderr]    Compiling serde v1.0.99
[INFO] [stderr]    Compiling memchr v2.2.1
[INFO] [stderr]    Compiling cc v1.0.40
[INFO] [stderr]    Compiling slog v2.5.2
[INFO] [stderr]    Compiling getrandom v0.1.9
[INFO] [stderr]     Checking rustc-demangle v0.1.16
[INFO] [stderr]    Compiling log v0.4.7
[INFO] [stderr]     Checking ppv-lite86 v0.2.5
[INFO] [stderr]     Checking ucd-util v0.1.5
[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 treeline v0.1.0
[INFO] [stderr]     Checking normalize-line-endings v0.2.2
[INFO] [stderr]     Checking difference v2.0.0
[INFO] [stderr]     Checking remove_dir_all v0.5.2
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking crossbeam-utils v0.6.6
[INFO] [stderr]     Checking rand_jitter v0.1.4
[INFO] [stderr]     Checking itertools v0.8.0
[INFO] [stderr]     Checking regex-syntax v0.6.10
[INFO] [stderr]     Checking predicates-tree v1.0.0
[INFO] [stderr]     Checking rand_isaac v0.1.1
[INFO] [stderr]     Checking rand_xorshift v0.1.1
[INFO] [stderr]     Checking rand_hc v0.1.0
[INFO] [stderr]     Checking regex-automata v0.1.8
[INFO] [stderr]     Checking rand_xoshiro v0.1.0
[INFO] [stderr]     Checking crossbeam-epoch v0.7.2
[INFO] [stderr]     Checking crossbeam-queue v0.1.2
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]     Checking crossbeam-deque v0.7.1
[INFO] [stderr]     Checking c2-chacha v0.2.2
[INFO] [stderr]    Compiling backtrace-sys v0.1.31
[INFO] [stderr]     Checking atty v0.2.13
[INFO] [stderr]     Checking dirs v1.0.5
[INFO] [stderr]     Checking time v0.1.42
[INFO] [stderr]     Checking num_cpus v1.10.1
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking criterion-plot v0.3.1
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking term v0.5.2
[INFO] [stderr]     Checking rayon-core v1.6.0
[INFO] [stderr]     Checking rand_core v0.5.0
[INFO] [stderr]     Checking aho-corasick v0.7.4
[INFO] [stderr]     Checking csv-core v0.1.6
[INFO] [stderr]     Checking rand_chacha v0.2.1
[INFO] [stderr]     Checking rand v0.7.0
[INFO] [stderr]     Checking rayon v1.2.0
[INFO] [stderr]     Checking float-cmp v0.4.0
[INFO] [stderr]     Checking backtrace v0.3.34
[INFO] [stderr]     Checking chrono v0.4.9
[INFO] [stderr]     Checking regex v1.2.0
[INFO] [stderr]     Checking slog-term v2.4.1
[INFO] [stderr]     Checking tempfile v3.1.0
[INFO] [stderr]    Compiling synstructure v0.10.2
[INFO] [stderr]     Checking predicates v1.0.1
[INFO] [stderr]    Compiling serde_derive v1.0.97
[INFO] [stderr]    Compiling failure_derive v0.1.5
[INFO] [stderr]     Checking failure v0.1.5
[INFO] [stderr]     Checking serde_json v1.0.40
[INFO] [stderr]     Checking bstr v0.2.8
[INFO] [stderr]     Checking csv v1.1.1
[INFO] [stderr]     Checking kvs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking tinytemplate v1.0.2
[INFO] [stderr]     Checking criterion v0.2.11
[INFO] [stderr] warning: unused variable: `key`
[INFO] [stderr]   --> src/sled.rs:30:23
[INFO] [stderr]    |
[INFO] [stderr] 30 |     fn get(&mut self, key: String) -> Result<Option<String>> {
[INFO] [stderr]    |                       ^^^ help: consider prefixing with an underscore: `_key`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `key`
[INFO] [stderr]   --> src/sled.rs:34:23
[INFO] [stderr]    |
[INFO] [stderr] 34 |     fn set(&mut self, key: String, value: String) -> Result<()> {
[INFO] [stderr]    |                       ^^^ help: consider prefixing with an underscore: `_key`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `value`
[INFO] [stderr]   --> src/sled.rs:34:36
[INFO] [stderr]    |
[INFO] [stderr] 34 |     fn set(&mut self, key: String, value: String) -> Result<()> {
[INFO] [stderr]    |                                    ^^^^^ help: consider prefixing with an underscore: `_value`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `key`
[INFO] [stderr]   --> src/sled.rs:38:26
[INFO] [stderr]    |
[INFO] [stderr] 38 |     fn remove(&mut self, key: String) -> Result<()> {
[INFO] [stderr]    |                          ^^^ help: consider prefixing with an underscore: `_key`
[INFO] [stderr] 
[INFO] [stderr]     Checking assert_cmd v0.11.1
[INFO] [stderr] warning: unused variable: `key`
[INFO] [stderr]   --> src/sled.rs:30:23
[INFO] [stderr]    |
[INFO] [stderr] 30 |     fn get(&mut self, key: String) -> Result<Option<String>> {
[INFO] [stderr]    |                       ^^^ help: consider prefixing with an underscore: `_key`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `key`
[INFO] [stderr]   --> src/sled.rs:34:23
[INFO] [stderr]    |
[INFO] [stderr] 34 |     fn set(&mut self, key: String, value: String) -> Result<()> {
[INFO] [stderr]    |                       ^^^ help: consider prefixing with an underscore: `_key`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `value`
[INFO] [stderr]   --> src/sled.rs:34:36
[INFO] [stderr]    |
[INFO] [stderr] 34 |     fn set(&mut self, key: String, value: String) -> Result<()> {
[INFO] [stderr]    |                                    ^^^^^ help: consider prefixing with an underscore: `_value`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `key`
[INFO] [stderr]   --> src/sled.rs:38:26
[INFO] [stderr]    |
[INFO] [stderr] 38 |     fn remove(&mut self, key: String) -> Result<()> {
[INFO] [stderr]    |                          ^^^ help: consider prefixing with an underscore: `_key`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 28s
[INFO] running `"docker" "inspect" "3737c8707b4213290268f99285814f1f49be5c201be3e50df52eadc0fe2855a0"`
[INFO] running `"docker" "rm" "-f" "3737c8707b4213290268f99285814f1f49be5c201be3e50df52eadc0fe2855a0"`
[INFO] [stdout] 3737c8707b4213290268f99285814f1f49be5c201be3e50df52eadc0fe2855a0