[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 master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAntonZelenin%2Frust-kvs" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/AntonZelenin/rust-kvs on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", 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-5-tc1/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: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded md5 v0.6.1 [INFO] [stderr] Downloaded num-derive v0.3.0 [INFO] [stderr] Downloaded bson v0.14.0 [INFO] [stderr] Downloaded termion v1.5.3 [INFO] [stderr] Downloaded yaml-rust v0.3.5 [INFO] [stderr] Downloaded syn v1.0.5 [INFO] [stderr] Downloaded regex-syntax v0.6.8 [INFO] [stderr] Downloaded aho-corasick v0.7.4 [INFO] [stderr] Downloaded regex v1.1.9 [INFO] [stderr] Downloaded indexmap v1.2.0 [INFO] [stderr] Downloaded ron v0.5.1 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 56bf1a03b0656254f9123d3b0a6452bb98b5b1590a2f035ef2641bb3437ce9c7 [INFO] running `Command { std: "docker" "start" "-a" "56bf1a03b0656254f9123d3b0a6452bb98b5b1590a2f035ef2641bb3437ce9c7", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "56bf1a03b0656254f9123d3b0a6452bb98b5b1590a2f035ef2641bb3437ce9c7", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "56bf1a03b0656254f9123d3b0a6452bb98b5b1590a2f035ef2641bb3437ce9c7", kill_on_drop: false }` [INFO] [stdout] 56bf1a03b0656254f9123d3b0a6452bb98b5b1590a2f035ef2641bb3437ce9c7 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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" "RUSTDOCFLAGS=--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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 49e7da5936d9051880bff17bab1435175a807c05d728b372c044211faf3c7b94 [INFO] running `Command { std: "docker" "start" "-a" "49e7da5936d9051880bff17bab1435175a807c05d728b372c044211faf3c7b94", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.65 [INFO] [stderr] Compiling proc-macro2 v0.4.30 [INFO] [stderr] Compiling autocfg v0.1.4 [INFO] [stderr] Compiling syn v0.15.39 [INFO] [stderr] Checking cfg-if v0.1.9 [INFO] [stderr] Compiling serde v1.0.101 [INFO] [stderr] Compiling memchr v2.2.1 [INFO] [stderr] Compiling bitflags v1.1.0 [INFO] [stderr] Compiling getrandom v0.1.12 [INFO] [stderr] Compiling ryu v1.0.0 [INFO] [stderr] Compiling byteorder v1.3.2 [INFO] [stderr] Compiling proc-macro2 v1.0.6 [INFO] [stderr] Compiling regex v1.1.9 [INFO] [stderr] Checking unicode-width v0.1.5 [INFO] [stderr] Checking indexmap v1.2.0 [INFO] [stderr] Checking ppv-lite86 v0.2.6 [INFO] [stderr] Checking textwrap v0.11.0 [INFO] [stderr] Checking regex-syntax v0.6.8 [INFO] [stderr] Checking vec_map v0.8.1 [INFO] [stderr] Compiling syn v1.0.5 [INFO] [stderr] Checking predicates-core v1.0.0 [INFO] [stderr] Checking utf8-ranges v1.0.3 [INFO] [stderr] Compiling num-traits v0.2.8 [INFO] [stderr] Compiling num-integer v0.1.41 [INFO] [stderr] Checking c2-chacha v0.2.3 [INFO] [stderr] Checking ansi_term v0.11.0 [INFO] [stderr] Compiling escargot v0.4.0 [INFO] [stderr] Checking yaml-rust v0.3.5 [INFO] [stderr] Checking log v0.4.6 [INFO] [stderr] Checking normalize-line-endings v0.2.2 [INFO] [stderr] Checking treeline v0.1.0 [INFO] [stderr] Checking difference v2.0.0 [INFO] [stderr] Checking hex v0.3.2 [INFO] [stderr] Checking md5 v0.6.1 [INFO] [stderr] Checking predicates-tree v1.0.0 [INFO] [stderr] Checking linked-hash-map v0.5.2 [INFO] [stderr] Compiling quote v1.0.2 [INFO] [stderr] Checking base64 v0.10.1 [INFO] [stderr] Checking aho-corasick v0.7.4 [INFO] [stderr] Compiling quote v0.6.12 [INFO] [stderr] Checking atty v0.2.11 [INFO] [stderr] Checking time v0.1.42 [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 chrono v0.4.9 [INFO] [stderr] Checking predicates v1.0.1 [INFO] [stderr] Compiling serde_derive v1.0.94 [INFO] [stderr] Checking kvs v0.1.0 (/opt/rustwide/workdir) [INFO] [stderr] Compiling num-derive v0.3.0 [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] Checking serde_json v1.0.41 [INFO] [stderr] Checking ron v0.5.1 [INFO] [stderr] Checking bson v0.14.0 [INFO] [stderr] Checking assert_cmd v0.11.1 [INFO] [stdout] warning: the item `bson` is imported redundantly [INFO] [stdout] --> examples/1000_structs_serde.rs:8:5 [INFO] [stdout] | [INFO] [stdout] 8 | use bson; [INFO] [stdout] | ^^^^ the item `bson` is already defined by prelude [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [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: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `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: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 22 | let _ = f.write(&serde_json::to_string(&a).unwrap().as_bytes()); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `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] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 23 | let _ = f.seek(SeekFrom::Start(0)); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `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] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 26 | let _ = f.read_to_string(&mut b); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 18.36s [INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: bson v0.14.0 [INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 2` [INFO] running `Command { std: "docker" "inspect" "49e7da5936d9051880bff17bab1435175a807c05d728b372c044211faf3c7b94", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "49e7da5936d9051880bff17bab1435175a807c05d728b372c044211faf3c7b94", kill_on_drop: false }` [INFO] [stdout] 49e7da5936d9051880bff17bab1435175a807c05d728b372c044211faf3c7b94 [INFO] checking AntonZelenin/rust-kvs against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAntonZelenin%2Frust-kvs" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/AntonZelenin/rust-kvs on toolchain 645bb72776a6a56a1a8f52631a44bd082b2ba509 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", 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-5-tc2/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: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 26d84d656e02bef2288185a607658d0ac9f5f742962c014943e20dbb5bec5e84 [INFO] running `Command { std: "docker" "start" "-a" "26d84d656e02bef2288185a607658d0ac9f5f742962c014943e20dbb5bec5e84", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "26d84d656e02bef2288185a607658d0ac9f5f742962c014943e20dbb5bec5e84", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "26d84d656e02bef2288185a607658d0ac9f5f742962c014943e20dbb5bec5e84", kill_on_drop: false }` [INFO] [stdout] 26d84d656e02bef2288185a607658d0ac9f5f742962c014943e20dbb5bec5e84 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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" "RUSTDOCFLAGS=--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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 9909c90196c93f56b18596d1692000c7a313482a6c6d4e6b2ba4b0301eed109e [INFO] running `Command { std: "docker" "start" "-a" "9909c90196c93f56b18596d1692000c7a313482a6c6d4e6b2ba4b0301eed109e", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.65 [INFO] [stderr] Compiling proc-macro2 v0.4.30 [INFO] [stderr] Compiling autocfg v0.1.4 [INFO] [stderr] Compiling syn v0.15.39 [INFO] [stderr] Checking cfg-if v0.1.9 [INFO] [stderr] Compiling serde v1.0.101 [INFO] [stderr] Compiling bitflags v1.1.0 [INFO] [stderr] Compiling memchr v2.2.1 [INFO] [stderr] Compiling ryu v1.0.0 [INFO] [stderr] Compiling getrandom v0.1.12 [INFO] [stderr] Compiling proc-macro2 v1.0.6 [INFO] [stderr] Compiling byteorder v1.3.2 [INFO] [stderr] Checking ppv-lite86 v0.2.6 [INFO] [stderr] Checking unicode-width v0.1.5 [INFO] [stderr] Checking indexmap v1.2.0 [INFO] [stderr] Compiling regex v1.1.9 [INFO] [stderr] Checking regex-syntax v0.6.8 [INFO] [stderr] Checking textwrap v0.11.0 [INFO] [stderr] Compiling escargot v0.4.0 [INFO] [stderr] Checking utf8-ranges v1.0.3 [INFO] [stderr] Checking predicates-core v1.0.0 [INFO] [stderr] Compiling num-traits v0.2.8 [INFO] [stderr] Compiling num-integer v0.1.41 [INFO] [stderr] Compiling syn v1.0.5 [INFO] [stderr] Checking ansi_term v0.11.0 [INFO] [stderr] Checking c2-chacha v0.2.3 [INFO] [stderr] Checking vec_map v0.8.1 [INFO] [stderr] Checking yaml-rust v0.3.5 [INFO] [stderr] Checking log v0.4.6 [INFO] [stderr] Checking difference v2.0.0 [INFO] [stderr] Checking normalize-line-endings v0.2.2 [INFO] [stderr] Checking treeline v0.1.0 [INFO] [stderr] Checking hex v0.3.2 [INFO] [stderr] Checking md5 v0.6.1 [INFO] [stderr] Checking linked-hash-map v0.5.2 [INFO] [stderr] Checking predicates-tree v1.0.0 [INFO] [stderr] Checking aho-corasick v0.7.4 [INFO] [stderr] Checking atty v0.2.11 [INFO] [stderr] Checking time v0.1.42 [INFO] [stderr] Checking clap v2.33.0 [INFO] [stderr] Compiling quote v1.0.2 [INFO] [stderr] Checking rand_core v0.5.1 [INFO] [stderr] Checking base64 v0.10.1 [INFO] [stderr] Checking rand_chacha v0.2.1 [INFO] [stderr] Compiling quote v0.6.12 [INFO] [stderr] Checking rand v0.7.2 [INFO] [stderr] Checking float-cmp v0.4.0 [INFO] [stderr] Checking chrono v0.4.9 [INFO] [stderr] Checking kvs v0.1.0 (/opt/rustwide/workdir) [INFO] [stderr] Checking predicates v1.0.1 [INFO] [stderr] Compiling num-derive v0.3.0 [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 serde_json v1.0.41 [INFO] [stderr] Checking ron v0.5.1 [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: the item `bson` is imported redundantly [INFO] [stdout] --> examples/1000_structs_serde.rs:8:5 [INFO] [stdout] | [INFO] [stdout] 8 | use bson; [INFO] [stdout] | ^^^^ the item `bson` is already defined by prelude [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: unused `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: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 22 | let _ = f.write(&serde_json::to_string(&a).unwrap().as_bytes()); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `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] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 23 | let _ = f.seek(SeekFrom::Start(0)); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `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] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 26 | let _ = f.read_to_string(&mut b); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 17.51s [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: bson v0.14.0 [INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 2` [INFO] running `Command { std: "docker" "inspect" "9909c90196c93f56b18596d1692000c7a313482a6c6d4e6b2ba4b0301eed109e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "9909c90196c93f56b18596d1692000c7a313482a6c6d4e6b2ba4b0301eed109e", kill_on_drop: false }` [INFO] [stdout] 9909c90196c93f56b18596d1692000c7a313482a6c6d4e6b2ba4b0301eed109e