[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] checking fol21/rust-broadcast-buffer/1491c0a44a6a0fa47d8d4005dcdef3f6deb80337 against master#cb40c25f6aebb637163d26bf76a680ed6e5d1eda for pr-156157
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffol21%2Frust-broadcast-buffer" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[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-3-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/fol21/rust-broadcast-buffer on toolchain cb40c25f6aebb637163d26bf76a680ed6e5d1eda
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cb40c25f6aebb637163d26bf76a680ed6e5d1eda" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[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" "+cb40c25f6aebb637163d26bf76a680ed6e5d1eda" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded ppv-lite86 v0.2.15
[INFO] [stderr]   Downloaded libc v0.2.109
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+cb40c25f6aebb637163d26bf76a680ed6e5d1eda" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b7ff34a832425570e2d4a607b79d6ebd4dee849babf569fb487ee1161a1d6a38
[INFO] running `Command { std: "docker" "start" "-a" "b7ff34a832425570e2d4a607b79d6ebd4dee849babf569fb487ee1161a1d6a38", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b7ff34a832425570e2d4a607b79d6ebd4dee849babf569fb487ee1161a1d6a38", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b7ff34a832425570e2d4a607b79d6ebd4dee849babf569fb487ee1161a1d6a38", kill_on_drop: false }`
[INFO] [stdout] b7ff34a832425570e2d4a607b79d6ebd4dee849babf569fb487ee1161a1d6a38
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+cb40c25f6aebb637163d26bf76a680ed6e5d1eda" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bf057a00df9172b77b1d6a2e970c10fb9062fb25eabf72920775d4c096de6768
[INFO] running `Command { std: "docker" "start" "-a" "bf057a00df9172b77b1d6a2e970c10fb9062fb25eabf72920775d4c096de6768", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.109
[INFO] [stderr]     Checking ppv-lite86 v0.2.15
[INFO] [stderr]     Checking getrandom v0.2.3
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.4
[INFO] [stderr]     Checking 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<T: Copy + Display + Default>
[INFO] [stdout]    |            ------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 56 |     numprod: usize,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) 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<T: Copy + Display + Default> SBuffer<T>
[INFO] [stdout]     | -------------------------------------------- methods in this implementation
[INFO] [stdout] 109 | {
[INFO] [stdout] 110 |     pub fn data(&self, index: usize) -> Option<T>
[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)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 73 |         let _ = write!(f, "Buffer[ ");
[INFO] [stdout]    |         +++++++
[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] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 76 |             let _ = write!(f, "{}({}); ", d.data.unwrap_or_default(), d.to_read);
[INFO] [stdout]    |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `len` and `free_slots` are never used
[INFO] [stdout]    --> src/buffer.rs:115:12
[INFO] [stdout]     |
[INFO] [stdout] 108 | impl<T: Copy + Display + Default> SBuffer<T>
[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)]` (part of `#[warn(unused)]`) 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)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 73 |         let _ = write!(f, "Buffer[ ");
[INFO] [stdout]    |         +++++++
[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] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 76 |             let _ = write!(f, "{}({}); ", d.data.unwrap_or_default(), d.to_read);
[INFO] [stdout]    |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.27s
[INFO] running `Command { std: "docker" "inspect" "bf057a00df9172b77b1d6a2e970c10fb9062fb25eabf72920775d4c096de6768", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bf057a00df9172b77b1d6a2e970c10fb9062fb25eabf72920775d4c096de6768", kill_on_drop: false }`
[INFO] [stdout] bf057a00df9172b77b1d6a2e970c10fb9062fb25eabf72920775d4c096de6768
