[INFO] cloning repository https://github.com/berinaniesh/sha256-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/berinaniesh/sha256-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fberinaniesh%2Fsha256-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fberinaniesh%2Fsha256-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e7ef699a3ac85d2b0808e8be67448bde16467670
[INFO] checking berinaniesh/sha256-rust against master#c756124775121dea0e640652c5ee3c89e3dd0eb4 for pr-154971-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fberinaniesh%2Fsha256-rust" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/berinaniesh/sha256-rust
[INFO] finished tweaking git repo https://github.com/berinaniesh/sha256-rust
[INFO] tweaked toml for git repo https://github.com/berinaniesh/sha256-rust written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/berinaniesh/sha256-rust on toolchain c756124775121dea0e640652c5ee3c89e3dd0eb4
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c756124775121dea0e640652c5ee3c89e3dd0eb4" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/berinaniesh/sha256-rust 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" "+c756124775121dea0e640652c5ee3c89e3dd0eb4" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+c756124775121dea0e640652c5ee3c89e3dd0eb4" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3cf87ec20c95ae07c8ce93c3ab42ff215b96b9c5d7d83d09e4b4ab49116f4c5c
[INFO] running `Command { std: "docker" "start" "-a" "3cf87ec20c95ae07c8ce93c3ab42ff215b96b9c5d7d83d09e4b4ab49116f4c5c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3cf87ec20c95ae07c8ce93c3ab42ff215b96b9c5d7d83d09e4b4ab49116f4c5c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3cf87ec20c95ae07c8ce93c3ab42ff215b96b9c5d7d83d09e4b4ab49116f4c5c", kill_on_drop: false }`
[INFO] [stdout] 3cf87ec20c95ae07c8ce93c3ab42ff215b96b9c5d7d83d09e4b4ab49116f4c5c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+c756124775121dea0e640652c5ee3c89e3dd0eb4" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 27fcf5f607a14a7e7da20d4fae48a428a0a2d3c5449114103634521a2697f9d6
[INFO] running `Command { std: "docker" "start" "-a" "27fcf5f607a14a7e7da20d4fae48a428a0a2d3c5449114103634521a2697f9d6", kill_on_drop: false }`
[INFO] [stderr]     Checking sha256sum v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `super::constants`
[INFO] [stdout]  --> src/calc_sum.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use super::constants;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::constants`
[INFO] [stdout]  --> src/calc_sum.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use super::constants;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::Read`
[INFO] [stdout]  --> src/calc_sum.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::io::Read;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::Read`
[INFO] [stdout]  --> src/calc_sum.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::io::Read;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/calc_sum.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout]  9 | /     match file_result {
[INFO] [stdout] 10 | |         Ok(x) => {
[INFO] [stdout] 11 | |             
[INFO] [stdout] 12 | |             return "Hello".to_string();
[INFO] [stdout] ...  |
[INFO] [stdout] 19 | |     }
[INFO] [stdout]    | |_____- any code following this `match` expression is unreachable, as all arms diverge
[INFO] [stdout] 20 |
[INFO] [stdout] 21 |       "".to_string()
[INFO] [stdout]    |       ^^^^^^^^^^^^^^ unreachable expression
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/calc_sum.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout]  9 | /     match file_result {
[INFO] [stdout] 10 | |         Ok(x) => {
[INFO] [stdout] 11 | |             
[INFO] [stdout] 12 | |             return "Hello".to_string();
[INFO] [stdout] ...  |
[INFO] [stdout] 19 | |     }
[INFO] [stdout]    | |_____- any code following this `match` expression is unreachable, as all arms diverge
[INFO] [stdout] 20 |
[INFO] [stdout] 21 |       "".to_string()
[INFO] [stdout]    |       ^^^^^^^^^^^^^^ unreachable expression
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/calc_sum.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout] 10 |         Ok(x) => {
[INFO] [stdout]    |            ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/calc_sum.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout] 10 |         Ok(x) => {
[INFO] [stdout]    |            ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `H` is never used
[INFO] [stdout]  --> src/constants.rs:4:11
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub const H: [u32; 8] = 
[INFO] [stdout]   |           ^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `K` is never used
[INFO] [stdout]   --> src/constants.rs:10:11
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub const K: [u32; 64] = 
[INFO] [stdout]    |           ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `H` is never used
[INFO] [stdout]  --> src/constants.rs:4:11
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub const H: [u32; 8] = 
[INFO] [stdout]   |           ^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `K` is never used
[INFO] [stdout]   --> src/constants.rs:10:11
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub const K: [u32; 64] = 
[INFO] [stdout]    |           ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.12s
[INFO] running `Command { std: "docker" "inspect" "27fcf5f607a14a7e7da20d4fae48a428a0a2d3c5449114103634521a2697f9d6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "27fcf5f607a14a7e7da20d4fae48a428a0a2d3c5449114103634521a2697f9d6", kill_on_drop: false }`
[INFO] [stdout] 27fcf5f607a14a7e7da20d4fae48a428a0a2d3c5449114103634521a2697f9d6