[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] checking tcr/macos-profiler 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%2Ftcr%2Fmacos-profiler" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-0-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-0-tc2/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/tcr/macos-profiler 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/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" "+4f260f0f20b3133d20cfb50353c0221943af5796" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 7e5aac693e3d583a04e9c0ddc6da2ce55ff10d809fd2d3bf8daec157224df45f [INFO] running `Command { std: "docker" "start" "-a" "7e5aac693e3d583a04e9c0ddc6da2ce55ff10d809fd2d3bf8daec157224df45f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "7e5aac693e3d583a04e9c0ddc6da2ce55ff10d809fd2d3bf8daec157224df45f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "7e5aac693e3d583a04e9c0ddc6da2ce55ff10d809fd2d3bf8daec157224df45f", kill_on_drop: false }` [INFO] [stdout] 7e5aac693e3d583a04e9c0ddc6da2ce55ff10d809fd2d3bf8daec157224df45f [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 3b46b16b2d071faa4d579d8e6af07679c5a331b46240978ebb1d0e09b292d5a2 [INFO] running `Command { std: "docker" "start" "-a" "3b46b16b2d071faa4d579d8e6af07679c5a331b46240978ebb1d0e09b292d5a2", kill_on_drop: false }` [INFO] [stderr] Checking libc v0.2.37 [INFO] [stderr] Checking cfg-if v0.1.2 [INFO] [stderr] Compiling unicode-xid v0.0.4 [INFO] [stderr] Checking void v1.0.2 [INFO] [stderr] Compiling quote v0.3.15 [INFO] [stderr] Checking lazy_static v1.0.0 [INFO] [stderr] Compiling unicode-xid v0.1.0 [INFO] [stderr] Compiling cc v1.0.4 [INFO] [stderr] Checking nodrop v0.1.12 [INFO] [stderr] Checking scopeguard v0.3.3 [INFO] [stderr] Checking lazy_static v0.2.11 [INFO] [stderr] Checking memoffset v0.2.1 [INFO] [stderr] Checking unicode-width v0.1.4 [INFO] [stderr] Compiling rayon-core v1.4.0 [INFO] [stderr] Checking bitflags v1.0.1 [INFO] [stderr] Checking regex-syntax v0.4.2 [INFO] [stderr] Checking quick-error v1.2.1 [INFO] [stderr] Checking unreachable v1.0.0 [INFO] [stderr] Compiling proc-macro2 v0.2.3 [INFO] [stderr] Checking textwrap v0.9.0 [INFO] [stderr] Checking crossbeam-utils v0.2.2 [INFO] [stderr] Compiling synom v0.11.3 [INFO] [stderr] Checking rustc-demangle v0.1.7 [INFO] [stderr] Checking ansi_term v0.10.2 [INFO] [stderr] Checking vec_map v0.8.0 [INFO] [stderr] Checking arrayvec v0.4.7 [INFO] [stderr] Checking thread_local v0.3.5 [INFO] [stderr] Checking utf8-ranges v1.0.0 [INFO] [stderr] Checking serde v1.0.27 [INFO] [stderr] Checking strsim v0.7.0 [INFO] [stderr] Checking humantime v1.1.0 [INFO] [stderr] Checking log v0.4.1 [INFO] [stderr] Compiling command-macros v0.1.10 [INFO] [stderr] Checking termcolor v0.3.5 [INFO] [stderr] Checking byteorder v1.2.1 [INFO] [stderr] Checking bitflags v0.9.1 [INFO] [stderr] Compiling nix v0.10.0 [INFO] [stderr] Checking either v1.4.0 [INFO] [stderr] Compiling syn v0.11.11 [INFO] [stderr] Checking dtoa v0.4.2 [INFO] [stderr] Checking glob v0.2.11 [INFO] [stderr] Checking crossbeam-epoch v0.3.0 [INFO] [stderr] Checking itoa v0.3.4 [INFO] [stderr] Checking num-traits v0.2.0 [INFO] [stderr] Checking shlex v0.1.1 [INFO] [stderr] Checking memchr v2.0.1 [INFO] [stderr] Checking atty v0.2.6 [INFO] [stderr] Checking num_cpus v1.8.0 [INFO] [stderr] Compiling backtrace-sys v0.1.16 [INFO] [stderr] Checking rand v0.4.2 [INFO] [stderr] Checking iovec v0.1.2 [INFO] [stderr] Compiling quote v0.4.2 [INFO] [stderr] Checking aho-corasick v0.6.4 [INFO] [stderr] Checking nix v0.9.0 [INFO] [stderr] Checking clap v2.30.0 [INFO] [stderr] Checking bytes v0.4.6 [INFO] [stderr] Checking crossbeam-deque v0.2.0 [INFO] [stderr] Compiling syn v0.12.13 [INFO] [stderr] Checking regex v0.2.6 [INFO] [stderr] Compiling synstructure v0.6.1 [INFO] [stderr] Compiling serde_derive_internals v0.19.0 [INFO] [stderr] Checking rayon v0.9.0 [INFO] [stderr] Compiling serde_derive v1.0.27 [INFO] [stderr] Checking env_logger v0.5.4 [INFO] [stderr] Compiling failure_derive v0.1.1 [INFO] [stderr] Compiling structopt-derive v0.2.4 [INFO] [stderr] Checking ctrlc v3.1.0 [INFO] [stderr] Checking structopt v0.2.4 [INFO] [stderr] Checking serde_json v1.0.10 [INFO] [stderr] Checking toml v0.4.5 [INFO] [stderr] Checking backtrace v0.3.5 [INFO] [stderr] Checking failure v0.1.1 [INFO] [stderr] Checking quicli v0.2.0 [INFO] [stderr] Checking 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] error: this type will no longer be must used: Result [INFO] [stdout] --> src/main.rs:128:10 [INFO] [stdout] | [INFO] [stdout] 128 | #[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] [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] [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] error: this type will no longer be must used: Result [INFO] [stdout] --> src/main.rs:128:10 [INFO] [stdout] | [INFO] [stdout] 128 | #[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] [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] [stderr] error: could not compile `macos-profiler` (bin "macos-profiler" test) due to 1 previous error; 4 warnings emitted [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [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] error: could not compile `macos-profiler` (bin "macos-profiler") due to 1 previous error; 4 warnings emitted [INFO] running `Command { std: "docker" "inspect" "3b46b16b2d071faa4d579d8e6af07679c5a331b46240978ebb1d0e09b292d5a2", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "3b46b16b2d071faa4d579d8e6af07679c5a331b46240978ebb1d0e09b292d5a2", kill_on_drop: false }` [INFO] [stdout] 3b46b16b2d071faa4d579d8e6af07679c5a331b46240978ebb1d0e09b292d5a2