[INFO] cloning repository https://github.com/fol21/rust-broadcast-buffer [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/fol21/rust-broadcast-buffer" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffol21%2Frust-broadcast-buffer", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffol21%2Frust-broadcast-buffer'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 1491c0a44a6a0fa47d8d4005dcdef3f6deb80337 [INFO] building fol21/rust-broadcast-buffer against master#11663cd3bfefef7d34e8f0892c250bf698049392+rustflags=-Dtail-expr-drop-order for pr-134523 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffol21%2Frust-broadcast-buffer" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/fol21/rust-broadcast-buffer on toolchain 11663cd3bfefef7d34e8f0892c250bf698049392 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/fol21/rust-broadcast-buffer [INFO] finished tweaking git repo https://github.com/fol21/rust-broadcast-buffer [INFO] tweaked toml for git repo https://github.com/fol21/rust-broadcast-buffer written to /workspace/builds/worker-2-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/fol21/rust-broadcast-buffer 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" "+11663cd3bfefef7d34e8f0892c250bf698049392" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 97e19b1d8690206891c4f274ef14db5215772044df10d45f00b8e0128319761e [INFO] running `Command { std: "docker" "start" "-a" "97e19b1d8690206891c4f274ef14db5215772044df10d45f00b8e0128319761e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "97e19b1d8690206891c4f274ef14db5215772044df10d45f00b8e0128319761e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "97e19b1d8690206891c4f274ef14db5215772044df10d45f00b8e0128319761e", kill_on_drop: false }` [INFO] [stdout] 97e19b1d8690206891c4f274ef14db5215772044df10d45f00b8e0128319761e [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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 -Dtail-expr-drop-order" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 8d74ddba9ad05fb2f3d2837e20950f2a8205ec671ce03fc1fe15d55d7a521353 [INFO] running `Command { std: "docker" "start" "-a" "8d74ddba9ad05fb2f3d2837e20950f2a8205ec671ce03fc1fe15d55d7a521353", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.109 [INFO] [stderr] Compiling ppv-lite86 v0.2.15 [INFO] [stderr] Compiling getrandom v0.2.3 [INFO] [stderr] Compiling rand_core v0.6.3 [INFO] [stderr] Compiling rand_chacha v0.3.1 [INFO] [stderr] Compiling rand v0.8.4 [INFO] [stderr] Compiling rust-broadcast-buffer v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: field `numprod` is never read [INFO] [stdout] --> src/buffer.rs:56:5 [INFO] [stdout] | [INFO] [stdout] 53 | pub struct SBuffer [INFO] [stdout] | ------- field in this struct [INFO] [stdout] ... [INFO] [stdout] 56 | numprod: usize, [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: methods `data`, `len`, `numpos`, `numprod`, `numcons`, and `free_slots` are never used [INFO] [stdout] --> src/buffer.rs:110:12 [INFO] [stdout] | [INFO] [stdout] 108 | impl SBuffer [INFO] [stdout] | -------------------------------------------- methods in this implementation [INFO] [stdout] 109 | { [INFO] [stdout] 110 | pub fn data(&self, index: usize) -> Option [INFO] [stdout] | ^^^^ [INFO] [stdout] ... [INFO] [stdout] 115 | pub fn len(&self) -> usize [INFO] [stdout] | ^^^ [INFO] [stdout] ... [INFO] [stdout] 133 | pub fn numpos(&self) -> usize {self.numpos} [INFO] [stdout] | ^^^^^^ [INFO] [stdout] 134 | pub fn numprod(&self) -> usize {self.numprod} [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] 135 | pub fn numcons(&self) -> usize {self.numcons} [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] 136 | pub fn free_slots(&self) -> usize {self.free_slots} [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/buffer.rs:73:9 [INFO] [stdout] | [INFO] [stdout] 73 | write!(f, "Buffer[ "); [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] = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/buffer.rs:76:13 [INFO] [stdout] | [INFO] [stdout] 76 | write!(f, "{}({}); ", d.data.unwrap_or_default(), d.to_read); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.06s [INFO] running `Command { std: "docker" "inspect" "8d74ddba9ad05fb2f3d2837e20950f2a8205ec671ce03fc1fe15d55d7a521353", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "8d74ddba9ad05fb2f3d2837e20950f2a8205ec671ce03fc1fe15d55d7a521353", kill_on_drop: false }` [INFO] [stdout] 8d74ddba9ad05fb2f3d2837e20950f2a8205ec671ce03fc1fe15d55d7a521353 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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 -Dtail-expr-drop-order" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 7036bc1d5f7f819ed31cbb63f1d6c7e1b4157f28b6a6a6cae15cbfba0ac61482 [INFO] running `Command { std: "docker" "start" "-a" "7036bc1d5f7f819ed31cbb63f1d6c7e1b4157f28b6a6a6cae15cbfba0ac61482", kill_on_drop: false }` [INFO] [stderr] Compiling rust-broadcast-buffer v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: methods `len` and `free_slots` are never used [INFO] [stdout] --> src/buffer.rs:115:12 [INFO] [stdout] | [INFO] [stdout] 108 | impl SBuffer [INFO] [stdout] | -------------------------------------------- methods in this implementation [INFO] [stdout] ... [INFO] [stdout] 115 | pub fn len(&self) -> usize [INFO] [stdout] | ^^^ [INFO] [stdout] ... [INFO] [stdout] 136 | pub fn free_slots(&self) -> usize {self.free_slots} [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/buffer.rs:73:9 [INFO] [stdout] | [INFO] [stdout] 73 | write!(f, "Buffer[ "); [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] = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/buffer.rs:76:13 [INFO] [stdout] | [INFO] [stdout] 76 | write!(f, "{}({}); ", d.data.unwrap_or_default(), d.to_read); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 0.49s [INFO] running `Command { std: "docker" "inspect" "7036bc1d5f7f819ed31cbb63f1d6c7e1b4157f28b6a6a6cae15cbfba0ac61482", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "7036bc1d5f7f819ed31cbb63f1d6c7e1b4157f28b6a6a6cae15cbfba0ac61482", kill_on_drop: false }` [INFO] [stdout] 7036bc1d5f7f819ed31cbb63f1d6c7e1b4157f28b6a6a6cae15cbfba0ac61482