[INFO] cloning repository https://github.com/simpukr/rust-brainfuck
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/simpukr/rust-brainfuck" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsimpukr%2Frust-brainfuck", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsimpukr%2Frust-brainfuck'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a13060e7525f1d6b1fd599fa7be8d64c5779429e
[INFO] checking simpukr/rust-brainfuck against try#3fada14ee01d755dc8076e611f11bf65b28ffd21 for pr-154971-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsimpukr%2Frust-brainfuck" "/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/simpukr/rust-brainfuck
[INFO] finished tweaking git repo https://github.com/simpukr/rust-brainfuck
[INFO] tweaked toml for git repo https://github.com/simpukr/rust-brainfuck written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/simpukr/rust-brainfuck on toolchain 3fada14ee01d755dc8076e611f11bf65b28ffd21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3fada14ee01d755dc8076e611f11bf65b28ffd21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/simpukr/rust-brainfuck 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" "+3fada14ee01d755dc8076e611f11bf65b28ffd21" "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-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+3fada14ee01d755dc8076e611f11bf65b28ffd21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 51f7f16dd780142df40777ad25e137c8db1f6e244df7949ae2c91df9a133c756
[INFO] running `Command { std: "docker" "start" "-a" "51f7f16dd780142df40777ad25e137c8db1f6e244df7949ae2c91df9a133c756", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "51f7f16dd780142df40777ad25e137c8db1f6e244df7949ae2c91df9a133c756", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "51f7f16dd780142df40777ad25e137c8db1f6e244df7949ae2c91df9a133c756", kill_on_drop: false }`
[INFO] [stdout] 51f7f16dd780142df40777ad25e137c8db1f6e244df7949ae2c91df9a133c756
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+3fada14ee01d755dc8076e611f11bf65b28ffd21" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 315f63b4f1bfa456194a026fbbcfcc52463a784fbcc2df836f679d5121cfe7fa
[INFO] running `Command { std: "docker" "start" "-a" "315f63b4f1bfa456194a026fbbcfcc52463a784fbcc2df836f679d5121cfe7fa", kill_on_drop: false }`
[INFO] [stderr]     Checking rust-brainfuck v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around match arm expression
[INFO] [stdout]   --> src/memory.rs:39:24
[INFO] [stdout]    |
[INFO] [stdout] 39 |             Some(b) => (return *b),
[INFO] [stdout]    |                        ^         ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 39 -             Some(b) => (return *b),
[INFO] [stdout] 39 +             Some(b) => return *b ,
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around match arm expression
[INFO] [stdout]   --> src/memory.rs:40:21
[INFO] [stdout]    |
[INFO] [stdout] 40 |             None => (0),
[INFO] [stdout]    |                     ^ ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 40 -             None => (0),
[INFO] [stdout] 40 +             None => 0 ,
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around match arm expression
[INFO] [stdout]   --> src/memory.rs:50:24
[INFO] [stdout]    |
[INFO] [stdout] 50 |             Some(b) => (*b = data),
[INFO] [stdout]    |                        ^         ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 50 -             Some(b) => (*b = data),
[INFO] [stdout] 50 +             Some(b) => *b = data ,
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `name` is never read
[INFO] [stdout]  --> src/files.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub struct File {
[INFO] [stdout]   |            ---- field in this struct
[INFO] [stdout] 4 |     pub name: String,
[INFO] [stdout]   |         ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around match arm expression
[INFO] [stdout]   --> src/memory.rs:39:24
[INFO] [stdout]    |
[INFO] [stdout] 39 |             Some(b) => (return *b),
[INFO] [stdout]    |                        ^         ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 39 -             Some(b) => (return *b),
[INFO] [stdout] 39 +             Some(b) => return *b ,
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around match arm expression
[INFO] [stdout]   --> src/memory.rs:40:21
[INFO] [stdout]    |
[INFO] [stdout] 40 |             None => (0),
[INFO] [stdout]    |                     ^ ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 40 -             None => (0),
[INFO] [stdout] 40 +             None => 0 ,
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around match arm expression
[INFO] [stdout]   --> src/memory.rs:50:24
[INFO] [stdout]    |
[INFO] [stdout] 50 |             Some(b) => (*b = data),
[INFO] [stdout]    |                        ^         ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 50 -             Some(b) => (*b = data),
[INFO] [stdout] 50 +             Some(b) => *b = data ,
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `name` is never read
[INFO] [stdout]  --> src/files.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub struct File {
[INFO] [stdout]   |            ---- field in this struct
[INFO] [stdout] 4 |     pub name: String,
[INFO] [stdout]   |         ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.24s
[INFO] running `Command { std: "docker" "inspect" "315f63b4f1bfa456194a026fbbcfcc52463a784fbcc2df836f679d5121cfe7fa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "315f63b4f1bfa456194a026fbbcfcc52463a784fbcc2df836f679d5121cfe7fa", kill_on_drop: false }`
[INFO] [stdout] 315f63b4f1bfa456194a026fbbcfcc52463a784fbcc2df836f679d5121cfe7fa
