[INFO] cloning repository https://github.com/qisanyijiu/kvs [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/qisanyijiu/kvs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fqisanyijiu%2Fkvs", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fqisanyijiu%2Fkvs'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 711e05357d42b1bc3ccae767a9a378df8f1b6e12 [INFO] checking qisanyijiu/kvs against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fqisanyijiu%2Fkvs" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'... [INFO] [stderr] done. [INFO] started tweaking git repo https://github.com/qisanyijiu/kvs [INFO] finished tweaking git repo https://github.com/qisanyijiu/kvs [INFO] tweaked toml for git repo https://github.com/qisanyijiu/kvs written to /workspace/builds/worker-3-tc2/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/qisanyijiu/kvs on toolchain 4f260f0f20b3133d20cfb50353c0221943af5796 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate git repo https://github.com/qisanyijiu/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" "+4f260f0f20b3133d20cfb50353c0221943af5796" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 693011594e0fb2123385272d6d93c6a8aa72feb41a0a4f004326e6a2d6cf0592 [INFO] running `Command { std: "docker" "start" "-a" "693011594e0fb2123385272d6d93c6a8aa72feb41a0a4f004326e6a2d6cf0592", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "693011594e0fb2123385272d6d93c6a8aa72feb41a0a4f004326e6a2d6cf0592", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "693011594e0fb2123385272d6d93c6a8aa72feb41a0a4f004326e6a2d6cf0592", kill_on_drop: false }` [INFO] [stdout] 693011594e0fb2123385272d6d93c6a8aa72feb41a0a4f004326e6a2d6cf0592 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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 -Dunmustuse_in_always_ok" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] d974f376ece64ce4fac836e5a5642628738f9f8b8b7d4f77fa8296073169f963 [INFO] running `Command { std: "docker" "start" "-a" "d974f376ece64ce4fac836e5a5642628738f9f8b8b7d4f77fa8296073169f963", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.119 [INFO] [stderr] Compiling syn v1.0.86 [INFO] [stderr] Compiling crossbeam-utils v0.7.2 [INFO] [stderr] Compiling memoffset v0.5.6 [INFO] [stderr] Compiling crossbeam-utils v0.8.7 [INFO] [stderr] Compiling crossbeam-epoch v0.9.7 [INFO] [stderr] Compiling crossbeam-epoch v0.8.2 [INFO] [stderr] Compiling arrayvec v0.4.12 [INFO] [stderr] Compiling rayon-core v1.9.1 [INFO] [stderr] Compiling autocfg v0.1.8 [INFO] [stderr] Checking nodrop v0.1.14 [INFO] [stderr] Compiling rayon v1.5.1 [INFO] [stderr] Compiling semver v1.0.6 [INFO] [stderr] Compiling miniz_oxide v0.4.4 [INFO] [stderr] Checking unicode-width v0.1.9 [INFO] [stderr] Compiling backtrace v0.3.64 [INFO] [stderr] Checking crossbeam-channel v0.5.2 [INFO] [stderr] Checking textwrap v0.11.0 [INFO] [stderr] Checking crossbeam-utils v0.6.6 [INFO] [stderr] Checking crossbeam-deque v0.8.1 [INFO] [stderr] Compiling num-traits v0.2.14 [INFO] [stderr] Checking tokio-executor v0.1.10 [INFO] [stderr] Checking iovec v0.1.4 [INFO] [stderr] Checking num_cpus v1.13.1 [INFO] [stderr] Checking net2 v0.2.37 [INFO] [stderr] Checking parking_lot_core v0.6.2 [INFO] [stderr] 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[INFO] [stderr] Checking rustc-demangle v0.1.21 [INFO] [stderr] Checking tokio-uds v0.2.7 [INFO] [stderr] Checking crossbeam-epoch v0.7.1 (https://github.com/crossbeam-rs/crossbeam.git?rev=8cc906b#8cc906b9) [INFO] [stderr] Compiling synstructure v0.12.6 [INFO] [stderr] Checking tokio-tcp v0.1.4 [INFO] [stderr] Checking tokio-udp v0.1.6 [INFO] [stderr] Compiling cast v0.2.7 [INFO] [stderr] Compiling structopt-derive v0.2.18 [INFO] [stderr] Checking tokio-fs v0.1.7 [INFO] [stderr] Checking addr2line v0.17.0 [INFO] [stderr] Checking tokio-serde v0.3.0 [INFO] [stderr] Checking tokio-timer v0.2.13 [INFO] [stderr] Checking tokio-current-thread v0.1.7 [INFO] [stderr] Checking crossbeam-channel v0.4.4 [INFO] [stderr] Checking crossbeam-skiplist v0.0.0 (https://github.com/crossbeam-rs/crossbeam.git?rev=8cc906b#8cc906b9) [INFO] [stderr] Checking tokio v0.1.22 [INFO] [stderr] Checking env_logger v0.6.2 [INFO] [stderr] Compiling rand_pcg v0.1.2 [INFO] [stderr] Checking crossbeam v0.7.3 [INFO] [stderr] Checking structopt v0.2.18 [INFO] [stderr] Compiling rand_chacha v0.1.1 [INFO] [stderr] Checking regex-automata v0.1.10 [INFO] [stderr] Checking predicates-core v1.0.3 [INFO] [stderr] Compiling serde_derive v1.0.136 [INFO] [stderr] Compiling failure_derive v0.1.8 [INFO] [stderr] Checking float-cmp v0.8.0 [INFO] [stderr] Checking rand_os v0.1.3 [INFO] [stderr] Compiling rand v0.6.5 [INFO] [stderr] Checking itertools v0.8.2 [INFO] [stderr] Checking csv-core v0.1.10 [INFO] [stderr] Checking termtree v0.2.4 [INFO] [stderr] Checking predicates v1.0.8 [INFO] [stderr] Checking predicates-tree v1.0.5 [INFO] [stderr] Checking rand_xoshiro v0.1.0 [INFO] [stderr] Checking rand_isaac v0.1.1 [INFO] [stderr] Checking rand_xorshift v0.1.1 [INFO] [stderr] Checking rand_jitter v0.1.4 [INFO] [stderr] Checking remove_dir_all v0.5.3 [INFO] [stderr] Checking fastrand v1.7.0 [INFO] [stderr] Checking panic-control v0.1.4 [INFO] [stderr] Checking tempfile v3.3.0 [INFO] [stderr] Checking criterion-plot v0.3.1 [INFO] [stderr] Checking failure v0.1.8 [INFO] [stderr] Checking serde v1.0.136 [INFO] [stderr] Checking serde_json v1.0.79 [INFO] [stderr] Checking bincode v1.3.3 [INFO] [stderr] Checking hashbrown v0.2.2 [INFO] [stderr] Checking serde_bytes v0.10.5 [INFO] [stderr] Checking bstr v0.2.17 [INFO] [stderr] Checking pagecache v0.15.0 [INFO] [stderr] Checking csv v1.1.6 [INFO] [stderr] Checking tokio-serde-json v0.2.0 [INFO] [stderr] Checking tinytemplate v1.2.1 [INFO] [stderr] Checking escargot v0.4.0 [INFO] [stderr] Checking criterion v0.2.11 [INFO] [stderr] Checking assert_cmd v0.11.1 [INFO] [stderr] Checking sled v0.22.1 [INFO] [stderr] Checking kvs v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: field `path` is never read [INFO] [stdout] --> src/engines/kvs.rs:46:5 [INFO] [stdout] | [INFO] [stdout] 44 | pub struct KvStore { [INFO] [stdout] | ------- field in this struct [INFO] [stdout] 45 | // directory for the log and other data [INFO] [stdout] 46 | path: Arc, [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `KvStore` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `std::result::Result` that must be used [INFO] [stdout] --> src/engines/kvs.rs:249:13 [INFO] [stdout] | [INFO] [stdout] 249 | serde_json::to_writer(&mut self.writer, &cmd); [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)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 249 | let _ = serde_json::to_writer(&mut self.writer, &cmd); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `std::result::Result` that must be used [INFO] [stdout] --> src/engines/sled.rs:66:17 [INFO] [stdout] | [INFO] [stdout] 66 | db.flush(); [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] 66 | let _ = db.flush(); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: non-local `impl` definition, `impl` blocks should be written at the same level as their item [INFO] [stdout] --> src/error.rs:5:17 [INFO] [stdout] | [INFO] [stdout] 5 | #[derive(Debug, Fail)] [INFO] [stdout] | ^--- [INFO] [stdout] | | [INFO] [stdout] | `Fail` is not local [INFO] [stdout] | move the `impl` block outside of this constant `_DERIVE_failure_Fail_FOR_KvsError` [INFO] [stdout] 6 | pub enum KvsError { [INFO] [stdout] | -------- `KvsError` is not local [INFO] [stdout] | [INFO] [stdout] = note: the derive macro `Fail` defines the non-local `impl`, and may need to be changed [INFO] [stdout] = note: the derive macro `Fail` may come from an old version of the `failure_derive` crate, try updating your dependency with `cargo update -p failure_derive` [INFO] [stdout] = note: an `impl` is never scoped, even when it is nested inside an item, as it may impact type checking outside of that item, which can be the case if neither the trait or the self type are at the same nesting level as the `impl` [INFO] [stdout] = note: items in an anonymous const item (`const _: () = { ... }`) are treated as in the same scope as the anonymous const's declaration for the purpose of this lint [INFO] [stdout] = note: `#[warn(non_local_definitions)]` on by default [INFO] [stdout] = note: this warning originates in the derive macro `Fail` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: non-local `impl` definition, `impl` blocks should be written at the same level as their item [INFO] [stdout] --> src/error.rs:5:17 [INFO] [stdout] | [INFO] [stdout] 5 | #[derive(Debug, Fail)] [INFO] [stdout] | ^--- [INFO] [stdout] | | [INFO] [stdout] | `Display` is not local [INFO] [stdout] | move the `impl` block outside of this constant `_DERIVE_failure_core_fmt_Display_FOR_KvsError` [INFO] [stdout] 6 | pub enum KvsError { [INFO] [stdout] | -------- `KvsError` is not local [INFO] [stdout] | [INFO] [stdout] = note: the derive macro `Fail` defines the non-local `impl`, and may need to be changed [INFO] [stdout] = note: the derive macro `Fail` may come from an old version of the `failure_derive` crate, try updating your dependency with `cargo update -p failure_derive` [INFO] [stdout] = note: an `impl` is never scoped, even when it is nested inside an item, as it may impact type checking outside of that item, which can be the case if neither the trait or the self type are at the same nesting level as the `impl` [INFO] [stdout] = note: items in an anonymous const item (`const _: () = { ... }`) are treated as in the same scope as the anonymous const's declaration for the purpose of this lint [INFO] [stdout] = note: this warning originates in the derive macro `Fail` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `path` is never read [INFO] [stdout] --> src/engines/kvs.rs:46:5 [INFO] [stdout] | [INFO] [stdout] 44 | pub struct KvStore { [INFO] [stdout] | ------- field in this struct [INFO] [stdout] 45 | // directory for the log and other data [INFO] [stdout] 46 | path: Arc, [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `KvStore` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `std::result::Result` that must be used [INFO] [stdout] --> src/engines/kvs.rs:249:13 [INFO] [stdout] | [INFO] [stdout] 249 | serde_json::to_writer(&mut self.writer, &cmd); [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)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 249 | let _ = serde_json::to_writer(&mut self.writer, &cmd); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `std::result::Result` that must be used [INFO] [stdout] --> src/engines/sled.rs:66:17 [INFO] [stdout] | [INFO] [stdout] 66 | db.flush(); [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] 66 | let _ = db.flush(); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: non-local `impl` definition, `impl` blocks should be written at the same level as their item [INFO] [stdout] --> src/error.rs:5:17 [INFO] [stdout] | [INFO] [stdout] 5 | #[derive(Debug, Fail)] [INFO] [stdout] | ^--- [INFO] [stdout] | | [INFO] [stdout] | `Fail` is not local [INFO] [stdout] | move the `impl` block outside of this constant `_DERIVE_failure_Fail_FOR_KvsError` [INFO] [stdout] 6 | pub enum KvsError { [INFO] [stdout] | -------- `KvsError` is not local [INFO] [stdout] | [INFO] [stdout] = note: the derive macro `Fail` defines the non-local `impl`, and may need to be changed [INFO] [stdout] = note: the derive macro `Fail` may come from an old version of the `failure_derive` crate, try updating your dependency with `cargo update -p failure_derive` [INFO] [stdout] = note: an `impl` is never scoped, even when it is nested inside an item, as it may impact type checking outside of that item, which can be the case if neither the trait or the self type are at the same nesting level as the `impl` [INFO] [stdout] = note: items in an anonymous const item (`const _: () = { ... }`) are treated as in the same scope as the anonymous const's declaration for the purpose of this lint [INFO] [stdout] = note: `#[warn(non_local_definitions)]` on by default [INFO] [stdout] = note: this warning originates in the derive macro `Fail` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: non-local `impl` definition, `impl` blocks should be written at the same level as their item [INFO] [stdout] --> src/error.rs:5:17 [INFO] [stdout] | [INFO] [stdout] 5 | #[derive(Debug, Fail)] [INFO] [stdout] | ^--- [INFO] [stdout] | | [INFO] [stdout] | `Display` is not local [INFO] [stdout] | move the `impl` block outside of this constant `_DERIVE_failure_core_fmt_Display_FOR_KvsError` [INFO] [stdout] 6 | pub enum KvsError { [INFO] [stdout] | -------- `KvsError` is not local [INFO] [stdout] | [INFO] [stdout] = note: the derive macro `Fail` defines the non-local `impl`, and may need to be changed [INFO] [stdout] = note: the derive macro `Fail` may come from an old version of the `failure_derive` crate, try updating your dependency with `cargo update -p failure_derive` [INFO] [stdout] = note: an `impl` is never scoped, even when it is nested inside an item, as it may impact type checking outside of that item, which can be the case if neither the trait or the self type are at the same nesting level as the `impl` [INFO] [stdout] = note: items in an anonymous const item (`const _: () = { ... }`) are treated as in the same scope as the anonymous const's declaration for the purpose of this lint [INFO] [stdout] = note: this warning originates in the derive macro `Fail` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: Result [INFO] [stdout] --> src/bin/kvs-client.rs:20:10 [INFO] [stdout] | [INFO] [stdout] 20 | #[derive(StructOpt, Debug)] [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: requested on the command line with `-D unmustuse-in-always-ok` [INFO] [stdout] = note: this error originates in the derive macro `StructOpt` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `kvs` (bin "kvs-client" test) due to 1 previous error [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stdout] error: this type will no longer be must used: Result [INFO] [stdout] --> src/bin/kvs-client.rs:20:10 [INFO] [stdout] | [INFO] [stdout] 20 | #[derive(StructOpt, Debug)] [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: requested on the command line with `-D unmustuse-in-always-ok` [INFO] [stdout] = note: this error originates in the derive macro `StructOpt` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `kvs` (bin "kvs-client") due to 1 previous error [INFO] running `Command { std: "docker" "inspect" "d974f376ece64ce4fac836e5a5642628738f9f8b8b7d4f77fa8296073169f963", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "d974f376ece64ce4fac836e5a5642628738f9f8b8b7d4f77fa8296073169f963", kill_on_drop: false }` [INFO] [stdout] d974f376ece64ce4fac836e5a5642628738f9f8b8b7d4f77fa8296073169f963