[INFO] cloning repository https://github.com/ymgyt/kvs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ymgyt/kvs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fymgyt%2Fkvs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fymgyt%2Fkvs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 897f60de4de5763a26d43c9c4a60756604dbfcd3
[INFO] checking ymgyt/kvs against try#6f8a6450478f69b8510c8976ab6c2a70b3b0e47c for pr-84920
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fymgyt%2Fkvs" "/workspace/builds/worker-14/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-14/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ymgyt/kvs on toolchain 6f8a6450478f69b8510c8976ab6c2a70b3b0e47c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ymgyt/kvs
[INFO] finished tweaking git repo https://github.com/ymgyt/kvs
[INFO] tweaked toml for git repo https://github.com/ymgyt/kvs written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate git repo https://github.com/ymgyt/kvs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded miniz_oxide v0.4.3
[INFO] [stderr]   Downloaded csv-core v0.1.10
[INFO] [stderr]   Downloaded wasm-bindgen-macro v0.2.68
[INFO] [stderr]   Downloaded adler v0.2.3
[INFO] [stderr]   Downloaded webpki v0.21.3
[INFO] [stderr]   Downloaded pin-project v0.4.27
[INFO] [stderr]   Downloaded ntapi v0.3.4
[INFO] [stderr]   Downloaded async-trait v0.1.41
[INFO] [stderr]   Downloaded base64 v0.12.3
[INFO] [stderr]   Downloaded rustc-demangle v0.1.18
[INFO] [stderr]   Downloaded wasm-bindgen v0.2.68
[INFO] [stderr]   Downloaded generator v0.6.23
[INFO] [stderr]   Downloaded pin-project-lite v0.2.0
[INFO] [stderr]   Downloaded mio v0.7.6
[INFO] [stderr]   Downloaded tinytemplate v1.1.0
[INFO] [stderr]   Downloaded loom v0.3.6
[INFO] [stderr]   Downloaded object v0.22.0
[INFO] [stderr]   Downloaded yaml-rust v0.4.4
[INFO] [stderr]   Downloaded criterion-plot v0.4.3
[INFO] [stderr]   Downloaded crossbeam-deque v0.8.0
[INFO] [stderr]   Downloaded oorandom v11.1.3
[INFO] [stderr]   Downloaded crossbeam-channel v0.5.0
[INFO] [stderr]   Downloaded rayon-core v1.9.0
[INFO] [stderr]   Downloaded rayon v1.5.0
[INFO] [stderr]   Downloaded crossbeam-epoch v0.9.1
[INFO] [stderr]   Downloaded tracing-core v0.1.17
[INFO] [stderr]   Downloaded rustls v0.18.1
[INFO] [stderr]   Downloaded crossbeam-utils v0.8.1
[INFO] [stderr]   Downloaded rand_core v0.4.2
[INFO] [stderr]   Downloaded atoi v0.3.3
[INFO] [stderr]   Downloaded backtrace v0.3.55
[INFO] [stderr]   Downloaded futures-core v0.3.8
[INFO] [stderr]   Downloaded socket2 v0.3.17
[INFO] [stderr]   Downloaded js-sys v0.3.45
[INFO] [stderr]   Downloaded walkdir v2.3.1
[INFO] [stderr]   Downloaded wasm-bindgen-shared v0.2.68
[INFO] [stderr]   Downloaded memoffset v0.6.1
[INFO] [stderr]   Downloaded serde_cbor v0.11.1
[INFO] [stderr]   Downloaded getrandom v0.1.15
[INFO] [stderr]   Downloaded cast v0.2.3
[INFO] [stderr]   Downloaded either v1.6.1
[INFO] [stderr]   Downloaded serde_yaml v0.8.14
[INFO] [stderr]   Downloaded bstr v0.2.14
[INFO] [stderr]   Downloaded regex-syntax v0.6.20
[INFO] [stderr]   Downloaded half v1.6.0
[INFO] [stderr]   Downloaded libc v0.2.80
[INFO] [stderr]   Downloaded wasm-bindgen-backend v0.2.68
[INFO] [stderr]   Downloaded addr2line v0.14.0
[INFO] [stderr]   Downloaded syn v1.0.48
[INFO] [stderr]   Downloaded gimli v0.23.0
[INFO] [stderr]   Downloaded web-sys v0.3.45
[INFO] [stderr]   Downloaded csv v1.1.5
[INFO] [stderr]   Downloaded serde_derive v1.0.117
[INFO] [stderr]   Downloaded tokio v0.3.5
[INFO] [stderr]   Downloaded plotters v0.2.15
[INFO] [stderr]   Downloaded ring v0.16.17
[INFO] [stderr]   Downloaded serde_json v1.0.59
[INFO] [stderr]   Downloaded once_cell v1.5.2
[INFO] [stderr]   Downloaded tokio-rustls v0.20.0
[INFO] [stderr]   Downloaded wasm-bindgen-macro-support v0.2.68
[INFO] [stderr]   Downloaded miow v0.3.6
[INFO] [stderr]   Downloaded pin-project-internal v0.4.27
[INFO] [stderr]   Downloaded tempdir v0.3.7
[INFO] [stderr]   Downloaded serde v1.0.117
[INFO] [stderr]   Downloaded sharded-slab v0.1.0
[INFO] [stderr]   Downloaded hermit-abi v0.1.10
[INFO] [stderr]   Downloaded tokio-test v0.3.0
[INFO] [stderr]   Downloaded same-file v1.0.6
[INFO] [stderr]   Downloaded scoped-tls v1.0.0
[INFO] [stderr]   Downloaded cc v1.0.65
[INFO] [stderr]   Downloaded const_fn v0.4.3
[INFO] [stderr]   Downloaded tracing-subscriber v0.2.14
[INFO] [stderr]   Downloaded criterion v0.3.3
[INFO] [stderr]   Downloaded regex v1.4.1
[INFO] [stderr]   Downloaded tokio-macros v0.3.1
[INFO] [stderr]   Downloaded tracing v0.1.21
[INFO] [stderr]   Downloaded pin-project-lite v0.1.11
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 62b267096bc9329abdb90e66c74f23abafafe7a408dac82c2e4c0f815d70a615
[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" "62b267096bc9329abdb90e66c74f23abafafe7a408dac82c2e4c0f815d70a615", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "62b267096bc9329abdb90e66c74f23abafafe7a408dac82c2e4c0f815d70a615", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "62b267096bc9329abdb90e66c74f23abafafe7a408dac82c2e4c0f815d70a615", kill_on_drop: false }`
[INFO] [stdout] 62b267096bc9329abdb90e66c74f23abafafe7a408dac82c2e4c0f815d70a615
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 406430c22f020032fc704840b521b39c393cf2437071b9fa0e7f4c244bd73a88
[INFO] running `Command { std: "docker" "start" "-a" "406430c22f020032fc704840b521b39c393cf2437071b9fa0e7f4c244bd73a88", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling syn v1.0.48
[INFO] [stderr]    Compiling serde_derive v1.0.117
[INFO] [stderr]    Compiling serde v1.0.117
[INFO] [stderr]    Compiling cc v1.0.65
[INFO] [stderr]    Compiling const_fn v0.4.3
[INFO] [stderr]     Checking once_cell v1.5.2
[INFO] [stderr]     Checking itoa v0.4.6
[INFO] [stderr]     Checking untrusted v0.7.1
[INFO] [stderr]     Checking bytes v0.6.0
[INFO] [stderr]    Compiling rayon-core v1.9.0
[INFO] [stderr]     Checking base64 v0.12.3
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]     Checking linked-hash-map v0.5.3
[INFO] [stderr]     Checking adler v0.2.3
[INFO] [stderr]     Checking dtoa v0.4.6
[INFO] [stderr]     Checking smallvec v1.4.2
[INFO] [stderr]     Checking remove_dir_all v0.5.3
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling crossbeam-utils v0.8.1
[INFO] [stderr]    Compiling memoffset v0.6.1
[INFO] [stderr]    Compiling tokio v0.3.5
[INFO] [stderr]    Compiling num-integer v0.1.43
[INFO] [stderr]    Compiling miniz_oxide v0.4.3
[INFO] [stderr]    Compiling rayon v1.5.0
[INFO] [stderr]     Checking tracing-core v0.1.17
[INFO] [stderr]     Checking regex v1.4.1
[INFO] [stderr]     Checking sharded-slab v0.1.0
[INFO] [stderr]     Checking addr2line v0.14.0
[INFO] [stderr]     Checking itertools v0.9.0
[INFO] [stderr]     Checking yaml-rust v0.4.4
[INFO] [stderr]     Checking crc32fast v1.2.1
[INFO] [stderr]     Checking getrandom v0.1.15
[INFO] [stderr]     Checking signal-hook-registry v1.2.1
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking csv-core v0.1.10
[INFO] [stderr]     Checking mio v0.7.6
[INFO] [stderr]     Checking regex-automata v0.1.9
[INFO] [stderr]    Compiling cast v0.2.3
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking tracing-log v0.1.1
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]     Checking tempdir v0.3.7
[INFO] [stderr]     Checking crossbeam-channel v0.5.0
[INFO] [stderr]     Checking criterion-plot v0.4.3
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking backtrace v0.3.55
[INFO] [stderr]    Compiling ring v0.16.17
[INFO] [stderr]     Checking matchers v0.0.1
[INFO] [stderr]     Checking crossbeam-epoch v0.9.1
[INFO] [stderr]     Checking atoi v0.3.3
[INFO] [stderr]     Checking plotters v0.2.15
[INFO] [stderr]     Checking crossbeam-deque v0.8.0
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking webpki v0.21.3
[INFO] [stderr]     Checking sct v0.6.0
[INFO] [stderr]     Checking rustls v0.18.1
[INFO] [stderr]    Compiling tracing-attributes v0.1.11
[INFO] [stderr]    Compiling tokio-macros v0.3.1
[INFO] [stderr]    Compiling pin-project-internal v0.4.27
[INFO] [stderr]    Compiling async-trait v0.1.41
[INFO] [stderr]     Checking tracing v0.1.21
[INFO] [stderr]     Checking pin-project v0.4.27
[INFO] [stderr]     Checking tracing-futures v0.2.4
[INFO] [stderr]     Checking tokio-rustls v0.20.0
[INFO] [stderr]     Checking tokio-test v0.3.0
[INFO] [stderr]     Checking serde_json v1.0.59
[INFO] [stderr]     Checking tracing-serde v0.1.2
[INFO] [stderr]     Checking bstr v0.2.14
[INFO] [stderr]     Checking serde_yaml v0.8.14
[INFO] [stderr]     Checking serde_cbor v0.11.1
[INFO] [stderr]     Checking csv v1.1.5
[INFO] [stderr]     Checking tracing-subscriber v0.2.14
[INFO] [stderr]     Checking tinytemplate v1.1.0
[INFO] [stderr]     Checking criterion v0.3.3
[INFO] [stderr]     Checking kvsd v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 58s
[INFO] running `Command { std: "docker" "inspect" "406430c22f020032fc704840b521b39c393cf2437071b9fa0e7f4c244bd73a88", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "406430c22f020032fc704840b521b39c393cf2437071b9fa0e7f4c244bd73a88", kill_on_drop: false }`
[INFO] [stdout] 406430c22f020032fc704840b521b39c393cf2437071b9fa0e7f4c244bd73a88