[INFO] cloning repository https://github.com/tcr/macos-profiler [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tcr/macos-profiler" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftcr%2Fmacos-profiler", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftcr%2Fmacos-profiler'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] e494e1f4ed1805e390ac4f9b755251df53a3dc95 [INFO] testing tcr/macos-profiler against try#b83b707f97d809763b7861afa7638871f3339a33 for pr-145838-1 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftcr%2Fmacos-profiler" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'... [INFO] [stderr] done. [INFO] started tweaking git repo https://github.com/tcr/macos-profiler [INFO] finished tweaking git repo https://github.com/tcr/macos-profiler [INFO] tweaked toml for git repo https://github.com/tcr/macos-profiler written to /workspace/builds/worker-1-tc2/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/tcr/macos-profiler on toolchain b83b707f97d809763b7861afa7638871f3339a33 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate git repo https://github.com/tcr/macos-profiler 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" "+b83b707f97d809763b7861afa7638871f3339a33" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 07d48a91a23e070a81f4c1bcf4743acb0b4851d892ffc309889261f7208bab97 [INFO] running `Command { std: "docker" "start" "-a" "07d48a91a23e070a81f4c1bcf4743acb0b4851d892ffc309889261f7208bab97", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "07d48a91a23e070a81f4c1bcf4743acb0b4851d892ffc309889261f7208bab97", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "07d48a91a23e070a81f4c1bcf4743acb0b4851d892ffc309889261f7208bab97", kill_on_drop: false }` [INFO] [stdout] 07d48a91a23e070a81f4c1bcf4743acb0b4851d892ffc309889261f7208bab97 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] d176973f0e780753c4cf1e42027c7b6960859da40e797d13d3f816868f332485 [INFO] running `Command { std: "docker" "start" "-a" "d176973f0e780753c4cf1e42027c7b6960859da40e797d13d3f816868f332485", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.37 [INFO] [stderr] Compiling cfg-if v0.1.2 [INFO] [stderr] Compiling unicode-xid v0.0.4 [INFO] [stderr] Compiling quote v0.3.15 [INFO] [stderr] Compiling lazy_static v1.0.0 [INFO] [stderr] Compiling unicode-xid v0.1.0 [INFO] [stderr] Compiling cc v1.0.4 [INFO] [stderr] Compiling nodrop v0.1.12 [INFO] [stderr] Compiling synom v0.11.3 [INFO] [stderr] Compiling arrayvec v0.4.7 [INFO] [stderr] Compiling proc-macro2 v0.2.3 [INFO] [stderr] Compiling crossbeam-utils v0.2.2 [INFO] [stderr] Compiling lazy_static v0.2.11 [INFO] [stderr] Compiling memoffset v0.2.1 [INFO] [stderr] Compiling scopeguard v0.3.3 [INFO] [stderr] Compiling unreachable v1.0.0 [INFO] [stderr] Compiling rayon-core v1.4.0 [INFO] [stderr] Compiling unicode-width v0.1.4 [INFO] [stderr] Compiling bitflags v1.0.1 [INFO] [stderr] Compiling semver v0.1.20 [INFO] [stderr] Compiling syn v0.11.11 [INFO] [stderr] Compiling textwrap v0.9.0 [INFO] [stderr] Compiling memchr v2.0.1 [INFO] [stderr] Compiling atty v0.2.6 [INFO] [stderr] Compiling crossbeam-epoch v0.3.0 [INFO] [stderr] Compiling rand v0.4.2 [INFO] [stderr] Compiling aho-corasick v0.6.4 [INFO] [stderr] Compiling rustc_version v0.1.7 [INFO] [stderr] Compiling quote v0.4.2 [INFO] [stderr] Compiling crossbeam-deque v0.2.0 [INFO] [stderr] Compiling num_cpus v1.8.0 [INFO] [stderr] Compiling thread_local v0.3.5 [INFO] [stderr] Compiling utf8-ranges v1.0.0 [INFO] [stderr] Compiling syn v0.12.13 [INFO] [stderr] Compiling regex-syntax v0.4.2 [INFO] [stderr] Compiling strsim v0.7.0 [INFO] [stderr] Compiling rustc-demangle v0.1.7 [INFO] [stderr] Compiling quick-error v1.2.1 [INFO] [stderr] Compiling backtrace-sys v0.1.16 [INFO] [stderr] Compiling ansi_term v0.10.2 [INFO] [stderr] Compiling serde v1.0.27 [INFO] [stderr] Compiling synstructure v0.6.1 [INFO] [stderr] Compiling vec_map v0.8.0 [INFO] [stderr] Compiling serde_derive_internals v0.19.0 [INFO] [stderr] Compiling clap v2.30.0 [INFO] [stderr] Compiling regex v0.2.6 [INFO] [stderr] Compiling failure_derive v0.1.1 [INFO] [stderr] Compiling humantime v1.1.0 [INFO] [stderr] Compiling command-macros v0.1.10 [INFO] [stderr] Compiling iovec v0.1.2 [INFO] [stderr] Compiling log v0.4.1 [INFO] [stderr] Compiling either v1.4.0 [INFO] [stderr] Compiling structopt-derive v0.2.4 [INFO] [stderr] Compiling byteorder v1.2.1 [INFO] [stderr] Compiling termcolor v0.3.5 [INFO] [stderr] Compiling nix v0.10.0 [INFO] [stderr] Compiling bitflags v0.9.1 [INFO] [stderr] Compiling bytes v0.4.6 [INFO] [stderr] Compiling nix v0.9.0 [INFO] [stderr] Compiling env_logger v0.5.4 [INFO] [stderr] Compiling rayon v0.9.0 [INFO] [stderr] Compiling serde_derive v1.0.27 [INFO] [stderr] Compiling itoa v0.3.4 [INFO] [stderr] Compiling num-traits v0.2.0 [INFO] [stderr] Compiling dtoa v0.4.2 [INFO] [stderr] Compiling glob v0.2.11 [INFO] [stderr] Compiling structopt v0.2.4 [INFO] [stderr] Compiling toml v0.4.5 [INFO] [stderr] Compiling serde_json v1.0.10 [INFO] [stderr] Compiling ctrlc v3.1.0 [INFO] [stderr] Compiling shlex v0.1.1 [INFO] [stderr] Compiling backtrace v0.3.5 [INFO] [stderr] Compiling failure v0.1.1 [INFO] [stderr] Compiling quicli v0.2.0 [INFO] [stderr] Compiling macos-profiler v0.2.1 (/opt/rustwide/workdir) [INFO] [stdout] warning: non-local `impl` definition, `impl` blocks should be written at the same level as their item [INFO] [stdout] --> src/main.rs:36:17 [INFO] [stdout] | [INFO] [stdout] 36 | #[derive(Debug, Serialize)] [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | `Frame` is not local [INFO] [stdout] | `Serialize` is not local [INFO] [stdout] | move the `impl` block outside of this constant `_IMPL_SERIALIZE_FOR_Frame` [INFO] [stdout] | [INFO] [stdout] = note: the derive macro `Serialize` defines the non-local `impl`, and may need to be changed [INFO] [stdout] = note: the derive macro `Serialize` may come from an old version of the `serde_derive` crate, try updating your dependency with `cargo update -p serde_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 `Serialize` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused return value of `Vec::::split_off` that must be used [INFO] [stdout] --> src/dtrace.rs:33:29 [INFO] [stdout] | [INFO] [stdout] 33 | ... self.buffer.split_off(0); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: use `.truncate()` if you don't need the other half [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] 33 | let _ = self.buffer.split_off(0); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused return value of `Vec::::split_off` that must be used [INFO] [stdout] --> src/dtrace.rs:39:21 [INFO] [stdout] | [INFO] [stdout] 39 | self.buffer.split_off(0); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: use `.truncate()` if you don't need the other half [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 39 | let _ = self.buffer.split_off(0); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused return value of `Vec::::split_off` that must be used [INFO] [stdout] --> src/dtrace.rs:50:17 [INFO] [stdout] | [INFO] [stdout] 50 | self.buffer.split_off(0); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: use `.truncate()` if you don't need the other half [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 50 | let _ = self.buffer.split_off(0); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 35.83s [INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: syn v0.12.13 [INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 3` [INFO] running `Command { std: "docker" "inspect" "d176973f0e780753c4cf1e42027c7b6960859da40e797d13d3f816868f332485", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "d176973f0e780753c4cf1e42027c7b6960859da40e797d13d3f816868f332485", kill_on_drop: false }` [INFO] [stdout] d176973f0e780753c4cf1e42027c7b6960859da40e797d13d3f816868f332485 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 70636ff8430109efb590b59d3b67fe09f63ecf0772eaea5a895d8ca6b6df06cf [INFO] running `Command { std: "docker" "start" "-a" "70636ff8430109efb590b59d3b67fe09f63ecf0772eaea5a895d8ca6b6df06cf", kill_on_drop: false }` [INFO] [stderr] Compiling macos-profiler v0.2.1 (/opt/rustwide/workdir) [INFO] [stdout] warning: non-local `impl` definition, `impl` blocks should be written at the same level as their item [INFO] [stdout] --> src/main.rs:36:17 [INFO] [stdout] | [INFO] [stdout] 36 | #[derive(Debug, Serialize)] [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | `Frame` is not local [INFO] [stdout] | `Serialize` is not local [INFO] [stdout] | move the `impl` block outside of this constant `_IMPL_SERIALIZE_FOR_Frame` [INFO] [stdout] | [INFO] [stdout] = note: the derive macro `Serialize` defines the non-local `impl`, and may need to be changed [INFO] [stdout] = note: the derive macro `Serialize` may come from an old version of the `serde_derive` crate, try updating your dependency with `cargo update -p serde_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 `Serialize` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused return value of `Vec::::split_off` that must be used [INFO] [stdout] --> src/dtrace.rs:33:29 [INFO] [stdout] | [INFO] [stdout] 33 | ... self.buffer.split_off(0); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: use `.truncate()` if you don't need the other half [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] 33 | let _ = self.buffer.split_off(0); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused return value of `Vec::::split_off` that must be used [INFO] [stdout] --> src/dtrace.rs:39:21 [INFO] [stdout] | [INFO] [stdout] 39 | self.buffer.split_off(0); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: use `.truncate()` if you don't need the other half [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 39 | let _ = self.buffer.split_off(0); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused return value of `Vec::::split_off` that must be used [INFO] [stdout] --> src/dtrace.rs:50:17 [INFO] [stdout] | [INFO] [stdout] 50 | self.buffer.split_off(0); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: use `.truncate()` if you don't need the other half [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 50 | let _ = self.buffer.split_off(0); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 0.41s [INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: syn v0.12.13 [INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 3` [INFO] running `Command { std: "docker" "inspect" "70636ff8430109efb590b59d3b67fe09f63ecf0772eaea5a895d8ca6b6df06cf", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "70636ff8430109efb590b59d3b67fe09f63ecf0772eaea5a895d8ca6b6df06cf", kill_on_drop: false }` [INFO] [stdout] 70636ff8430109efb590b59d3b67fe09f63ecf0772eaea5a895d8ca6b6df06cf [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] dacce7cb898b670d6b03ed8069a9305953ee27e7f0e01ca0a92e391bc8b5a41d [INFO] running `Command { std: "docker" "start" "-a" "dacce7cb898b670d6b03ed8069a9305953ee27e7f0e01ca0a92e391bc8b5a41d", kill_on_drop: false }` [INFO] [stderr] warning: non-local `impl` definition, `impl` blocks should be written at the same level as their item [INFO] [stderr] --> src/main.rs:36:17 [INFO] [stderr] | [INFO] [stderr] 36 | #[derive(Debug, Serialize)] [INFO] [stderr] | ^^^^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | `Frame` is not local [INFO] [stderr] | `Serialize` is not local [INFO] [stderr] | move the `impl` block outside of this constant `_IMPL_SERIALIZE_FOR_Frame` [INFO] [stderr] | [INFO] [stderr] = note: the derive macro `Serialize` defines the non-local `impl`, and may need to be changed [INFO] [stderr] = note: the derive macro `Serialize` may come from an old version of the `serde_derive` crate, try updating your dependency with `cargo update -p serde_derive` [INFO] [stderr] = 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] [stderr] = 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] [stderr] = note: `#[warn(non_local_definitions)]` on by default [INFO] [stderr] = note: this warning originates in the derive macro `Serialize` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] warning: unused return value of `Vec::::split_off` that must be used [INFO] [stderr] --> src/dtrace.rs:33:29 [INFO] [stderr] | [INFO] [stderr] 33 | ... self.buffer.split_off(0); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: use `.truncate()` if you don't need the other half [INFO] [stderr] = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default [INFO] [stderr] help: use `let _ = ...` to ignore the resulting value [INFO] [stderr] | [INFO] [stderr] 33 | let _ = self.buffer.split_off(0); [INFO] [stderr] | +++++++ [INFO] [stderr] [INFO] [stderr] warning: unused return value of `Vec::::split_off` that must be used [INFO] [stderr] --> src/dtrace.rs:39:21 [INFO] [stderr] | [INFO] [stderr] 39 | self.buffer.split_off(0); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: use `.truncate()` if you don't need the other half [INFO] [stderr] help: use `let _ = ...` to ignore the resulting value [INFO] [stderr] | [INFO] [stderr] 39 | let _ = self.buffer.split_off(0); [INFO] [stderr] | +++++++ [INFO] [stderr] [INFO] [stderr] warning: unused return value of `Vec::::split_off` that must be used [INFO] [stderr] --> src/dtrace.rs:50:17 [INFO] [stderr] | [INFO] [stderr] 50 | self.buffer.split_off(0); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: use `.truncate()` if you don't need the other half [INFO] [stderr] help: use `let _ = ...` to ignore the resulting value [INFO] [stderr] | [INFO] [stderr] 50 | let _ = self.buffer.split_off(0); [INFO] [stderr] | +++++++ [INFO] [stderr] [INFO] [stderr] warning: `macos-profiler` (bin "macos-profiler" test) generated 4 warnings [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 0.11s [INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: syn v0.12.13 [INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 3` [INFO] [stderr] Running unittests src/main.rs (/opt/rustwide/target/debug/deps/macos_profiler-0ab1f78683986bae) [INFO] [stdout] [INFO] [stdout] running 0 tests [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "dacce7cb898b670d6b03ed8069a9305953ee27e7f0e01ca0a92e391bc8b5a41d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "dacce7cb898b670d6b03ed8069a9305953ee27e7f0e01ca0a92e391bc8b5a41d", kill_on_drop: false }` [INFO] [stdout] dacce7cb898b670d6b03ed8069a9305953ee27e7f0e01ca0a92e391bc8b5a41d