[INFO] cloning repository https://github.com/AntonZelenin/rust-kvs [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/AntonZelenin/rust-kvs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAntonZelenin%2Frust-kvs", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAntonZelenin%2Frust-kvs'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] c7ff4b0965e6b8e3963f84689080b5e3f2ffffb0 [INFO] checking AntonZelenin/rust-kvs against beta for pr-78714 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAntonZelenin%2Frust-kvs" "/workspace/builds/worker-0/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/AntonZelenin/rust-kvs on toolchain beta [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/AntonZelenin/rust-kvs [INFO] finished tweaking git repo https://github.com/AntonZelenin/rust-kvs [INFO] tweaked toml for git repo https://github.com/AntonZelenin/rust-kvs written to /workspace/builds/worker-0/source/Cargo.toml [INFO] crate git repo https://github.com/AntonZelenin/rust-kvs already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded normalize-line-endings v0.2.2 [INFO] [stderr] Downloaded md5 v0.6.1 [INFO] [stderr] Downloaded termion v1.5.3 [INFO] [stderr] Downloaded regex-syntax v0.6.8 [INFO] [stderr] Downloaded float-cmp v0.4.0 [INFO] [stderr] Downloaded regex v1.1.9 [INFO] [stderr] Downloaded bson v0.14.0 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] dceab799a7b17ee980a3358e3a349169c6b7ac8399ffbf731c59f5fdcfb8c93e [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" "dceab799a7b17ee980a3358e3a349169c6b7ac8399ffbf731c59f5fdcfb8c93e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "dceab799a7b17ee980a3358e3a349169c6b7ac8399ffbf731c59f5fdcfb8c93e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "dceab799a7b17ee980a3358e3a349169c6b7ac8399ffbf731c59f5fdcfb8c93e", kill_on_drop: false }` [INFO] [stdout] dceab799a7b17ee980a3358e3a349169c6b7ac8399ffbf731c59f5fdcfb8c93e [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 4c8829e1e0017614c6c90831bc1136217bf6973c1e96dfc531efaaa2cdb06e7d [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" "4c8829e1e0017614c6c90831bc1136217bf6973c1e96dfc531efaaa2cdb06e7d", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Compiling syn v0.15.39 [INFO] [stderr] Compiling regex v1.1.9 [INFO] [stderr] Checking indexmap v1.2.0 [INFO] [stderr] Checking utf8-ranges v1.0.3 [INFO] [stderr] Compiling syn v1.0.5 [INFO] [stderr] Compiling num-traits v0.2.8 [INFO] [stderr] Checking regex-syntax v0.6.8 [INFO] [stderr] Checking getrandom v0.1.12 [INFO] [stderr] Checking atty v0.2.11 [INFO] [stderr] Checking aho-corasick v0.7.4 [INFO] [stderr] Checking clap v2.33.0 [INFO] [stderr] Checking rand_core v0.5.1 [INFO] [stderr] Checking rand_chacha v0.2.1 [INFO] [stderr] Checking rand v0.7.2 [INFO] [stderr] Checking float-cmp v0.4.0 [INFO] [stderr] Checking num-integer v0.1.41 [INFO] [stderr] Checking chrono v0.4.9 [INFO] [stderr] Checking kvs v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused variable: `key` [INFO] [stdout] --> src/bin/kvs.rs:9:13 [INFO] [stdout] | [INFO] [stdout] 9 | let key = matches.value_of("KEY").unwrap(); [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/bin/kvs.rs:10:13 [INFO] [stdout] | [INFO] [stdout] 10 | let value = matches.value_of("VALUE").unwrap(); [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/bin/kvs.rs:14:13 [INFO] [stdout] | [INFO] [stdout] 14 | let key = matches.value_of("KEY").unwrap(); [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/bin/kvs.rs:18:13 [INFO] [stdout] | [INFO] [stdout] 18 | let key = matches.value_of("KEY").unwrap(); [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] Compiling serde_derive v1.0.94 [INFO] [stderr] Checking predicates v1.0.1 [INFO] [stderr] Compiling num-derive v0.3.0 [INFO] [stderr] Checking serde v1.0.101 [INFO] [stderr] Checking serde_json v1.0.41 [INFO] [stderr] Checking ron v0.5.1 [INFO] [stderr] Checking escargot v0.4.0 [INFO] [stderr] Checking bson v0.14.0 [INFO] [stderr] Checking assert_cmd v0.11.1 [INFO] [stdout] warning: unused variable: `key` [INFO] [stdout] --> src/bin/kvs.rs:9:13 [INFO] [stdout] | [INFO] [stdout] 9 | let key = matches.value_of("KEY").unwrap(); [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/bin/kvs.rs:10:13 [INFO] [stdout] | [INFO] [stdout] 10 | let value = matches.value_of("VALUE").unwrap(); [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/bin/kvs.rs:14:13 [INFO] [stdout] | [INFO] [stdout] 14 | let key = matches.value_of("KEY").unwrap(); [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/bin/kvs.rs:18:13 [INFO] [stdout] | [INFO] [stdout] 18 | let key = matches.value_of("KEY").unwrap(); [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: unused `std::result::Result` that must be used [INFO] [stdout] --> examples/serde.rs:22:5 [INFO] [stdout] | [INFO] [stdout] 22 | f.write(&serde_json::to_string(&a).unwrap().as_bytes()); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `std::result::Result` that must be used [INFO] [stdout] --> examples/serde.rs:23:5 [INFO] [stdout] | [INFO] [stdout] 23 | f.seek(SeekFrom::Start(0)); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `std::result::Result` that must be used [INFO] [stdout] --> examples/serde.rs:26:5 [INFO] [stdout] | [INFO] [stdout] 26 | f.read_to_string(&mut b); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 58.49s [INFO] running `Command { std: "docker" "inspect" "4c8829e1e0017614c6c90831bc1136217bf6973c1e96dfc531efaaa2cdb06e7d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "4c8829e1e0017614c6c90831bc1136217bf6973c1e96dfc531efaaa2cdb06e7d", kill_on_drop: false }` [INFO] [stdout] 4c8829e1e0017614c6c90831bc1136217bf6973c1e96dfc531efaaa2cdb06e7d