[INFO] updating cached repository https://github.com/matt-porter/synacor-challenge [INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"` [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] 8806e74f13ee2433915153a09385a69fe58b1ed8 [INFO] testing matt-porter/synacor-challenge against master#28742a1146f10a4f09369baad027a464acb7a766 for pr-71274 [INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmatt-porter%2Fsynacor-challenge" "/workspace/builds/worker-0/source"` [INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/matt-porter/synacor-challenge on toolchain 28742a1146f10a4f09369baad027a464acb7a766 [INFO] running `"/workspace/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started tweaking git repo https://github.com/matt-porter/synacor-challenge [INFO] finished tweaking git repo https://github.com/matt-porter/synacor-challenge [INFO] tweaked toml for git repo https://github.com/matt-porter/synacor-challenge written to /workspace/builds/worker-0/source/Cargo.toml [INFO] crate git repo https://github.com/matt-porter/synacor-challenge already has a lockfile, it will not be regenerated [INFO] running `"/workspace/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "build" "--frozen"` [INFO] [stdout] 9f2c4a1aeb66f02f2f2cb4adfef7df6a1e1a8451d25cd433b669a1f811567a94 [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `"docker" "start" "-a" "9f2c4a1aeb66f02f2f2cb4adfef7df6a1e1a8451d25cd433b669a1f811567a94"` [INFO] [stderr] Compiling regex-syntax v0.6.12 [INFO] [stderr] Compiling quick-error v1.2.2 [INFO] [stderr] Compiling termcolor v1.0.5 [INFO] [stderr] Compiling thread_local v0.3.6 [INFO] [stderr] Compiling aho-corasick v0.7.6 [INFO] [stderr] Compiling humantime v1.3.0 [INFO] [stderr] Compiling regex v1.3.1 [INFO] [stderr] Compiling env_logger v0.7.0 [INFO] [stderr] Compiling synacor v0.1.0 (/opt/rustwide/workdir) [INFO] [stderr] warning: unused import: `std::io::prelude::*` [INFO] [stderr] --> src/main.rs:372:5 [INFO] [stderr] | [INFO] [stderr] 372 | use std::io::prelude::*; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unreachable expression [INFO] [stderr] --> src/main.rs:330:9 [INFO] [stderr] | [INFO] [stderr] 329 | std::process::exit(0); [INFO] [stderr] | --------------------- any code following this expression is unreachable [INFO] [stderr] 330 | 0 [INFO] [stderr] | ^ unreachable expression [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unreachable_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `system` [INFO] [stderr] --> src/main.rs:97:14 [INFO] [stderr] | [INFO] [stderr] 97 | fn op_0_halt(system: &mut System) -> (){ [INFO] [stderr] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_system` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `idx` [INFO] [stderr] --> src/main.rs:325:35 [INFO] [stderr] | [INFO] [stderr] 325 | fn op_18_ret(system: &mut System, idx: usize) -> usize { [INFO] [stderr] | ^^^ help: if this is intentional, prefix it with an underscore: `_idx` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `stdin` [INFO] [stderr] --> src/main.rs:354:9 [INFO] [stderr] | [INFO] [stderr] 354 | let stdin = io::stdin().read_exact(&mut buffer); [INFO] [stderr] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_stdin` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `system` [INFO] [stderr] --> src/main.rs:362:15 [INFO] [stderr] | [INFO] [stderr] 362 | fn op_21_noop(system: &mut System, idx: usize) -> usize { [INFO] [stderr] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_system` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `v5` [INFO] [stderr] --> src/main.rs:401:9 [INFO] [stderr] | [INFO] [stderr] 401 | let v5 = v3 + v4; [INFO] [stderr] | ^^ help: if this is intentional, prefix it with an underscore: `_v5` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/main.rs:168:9 [INFO] [stderr] | [INFO] [stderr] 168 | let mut idx = idx + 1; [INFO] [stderr] | ----^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_mut)]` on by default [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/main.rs:321:9 [INFO] [stderr] | [INFO] [stderr] 321 | let mut idx = idx + 1; [INFO] [stderr] | ----^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/main.rs:380:9 [INFO] [stderr] | [INFO] [stderr] 380 | let mut iter = buffer.chunks(2); [INFO] [stderr] | ----^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: enum is never used: `Value` [INFO] [stderr] --> src/main.rs:366:6 [INFO] [stderr] | [INFO] [stderr] 366 | enum Value { [INFO] [stderr] | ^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: 11 warnings emitted [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 25.97s [INFO] running `"docker" "inspect" "9f2c4a1aeb66f02f2f2cb4adfef7df6a1e1a8451d25cd433b669a1f811567a94"` [INFO] running `"docker" "rm" "-f" "9f2c4a1aeb66f02f2f2cb4adfef7df6a1e1a8451d25cd433b669a1f811567a94"` [INFO] [stdout] 9f2c4a1aeb66f02f2f2cb4adfef7df6a1e1a8451d25cd433b669a1f811567a94 [INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "test" "--frozen" "--no-run"` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] 67d1e659872db45f6afaa7ece4afc2f60f2cb60a960487f8f990b7a68616976e [INFO] running `"docker" "start" "-a" "67d1e659872db45f6afaa7ece4afc2f60f2cb60a960487f8f990b7a68616976e"` [INFO] [stderr] Compiling synacor v0.1.0 (/opt/rustwide/workdir) [INFO] [stderr] warning: unused import: `std::io::prelude::*` [INFO] [stderr] --> src/main.rs:372:5 [INFO] [stderr] | [INFO] [stderr] 372 | use std::io::prelude::*; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unreachable expression [INFO] [stderr] --> src/main.rs:330:9 [INFO] [stderr] | [INFO] [stderr] 329 | std::process::exit(0); [INFO] [stderr] | --------------------- any code following this expression is unreachable [INFO] [stderr] 330 | 0 [INFO] [stderr] | ^ unreachable expression [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unreachable_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `system` [INFO] [stderr] --> src/main.rs:97:14 [INFO] [stderr] | [INFO] [stderr] 97 | fn op_0_halt(system: &mut System) -> (){ [INFO] [stderr] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_system` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `idx` [INFO] [stderr] --> src/main.rs:325:35 [INFO] [stderr] | [INFO] [stderr] 325 | fn op_18_ret(system: &mut System, idx: usize) -> usize { [INFO] [stderr] | ^^^ help: if this is intentional, prefix it with an underscore: `_idx` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `stdin` [INFO] [stderr] --> src/main.rs:354:9 [INFO] [stderr] | [INFO] [stderr] 354 | let stdin = io::stdin().read_exact(&mut buffer); [INFO] [stderr] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_stdin` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `system` [INFO] [stderr] --> src/main.rs:362:15 [INFO] [stderr] | [INFO] [stderr] 362 | fn op_21_noop(system: &mut System, idx: usize) -> usize { [INFO] [stderr] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_system` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `v5` [INFO] [stderr] --> src/main.rs:401:9 [INFO] [stderr] | [INFO] [stderr] 401 | let v5 = v3 + v4; [INFO] [stderr] | ^^ help: if this is intentional, prefix it with an underscore: `_v5` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/main.rs:168:9 [INFO] [stderr] | [INFO] [stderr] 168 | let mut idx = idx + 1; [INFO] [stderr] | ----^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_mut)]` on by default [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/main.rs:321:9 [INFO] [stderr] | [INFO] [stderr] 321 | let mut idx = idx + 1; [INFO] [stderr] | ----^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/main.rs:380:9 [INFO] [stderr] | [INFO] [stderr] 380 | let mut iter = buffer.chunks(2); [INFO] [stderr] | ----^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: enum is never used: `Value` [INFO] [stderr] --> src/main.rs:366:6 [INFO] [stderr] | [INFO] [stderr] 366 | enum Value { [INFO] [stderr] | ^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: 11 warnings emitted [INFO] [stderr] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 1.76s [INFO] running `"docker" "inspect" "67d1e659872db45f6afaa7ece4afc2f60f2cb60a960487f8f990b7a68616976e"` [INFO] running `"docker" "rm" "-f" "67d1e659872db45f6afaa7ece4afc2f60f2cb60a960487f8f990b7a68616976e"` [INFO] [stdout] 67d1e659872db45f6afaa7ece4afc2f60f2cb60a960487f8f990b7a68616976e [INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "test" "--frozen"` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] 0b1c698948db8333e5cae9ea67c9bfb988a41fd3d72353e49e3b9401fe36f6b1 [INFO] running `"docker" "start" "-a" "0b1c698948db8333e5cae9ea67c9bfb988a41fd3d72353e49e3b9401fe36f6b1"` [INFO] [stderr] warning: unused import: `std::io::prelude::*` [INFO] [stderr] --> src/main.rs:372:5 [INFO] [stderr] | [INFO] [stderr] 372 | use std::io::prelude::*; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unreachable expression [INFO] [stderr] --> src/main.rs:330:9 [INFO] [stderr] | [INFO] [stderr] 329 | std::process::exit(0); [INFO] [stderr] | --------------------- any code following this expression is unreachable [INFO] [stderr] 330 | 0 [INFO] [stderr] | ^ unreachable expression [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unreachable_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `system` [INFO] [stderr] --> src/main.rs:97:14 [INFO] [stderr] | [INFO] [stderr] 97 | fn op_0_halt(system: &mut System) -> (){ [INFO] [stderr] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_system` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `idx` [INFO] [stderr] --> src/main.rs:325:35 [INFO] [stderr] | [INFO] [stderr] 325 | fn op_18_ret(system: &mut System, idx: usize) -> usize { [INFO] [stderr] | ^^^ help: if this is intentional, prefix it with an underscore: `_idx` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `stdin` [INFO] [stderr] --> src/main.rs:354:9 [INFO] [stderr] | [INFO] [stderr] 354 | let stdin = io::stdin().read_exact(&mut buffer); [INFO] [stderr] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_stdin` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `system` [INFO] [stderr] --> src/main.rs:362:15 [INFO] [stderr] | [INFO] [stderr] 362 | fn op_21_noop(system: &mut System, idx: usize) -> usize { [INFO] [stderr] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_system` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `v5` [INFO] [stderr] --> src/main.rs:401:9 [INFO] [stderr] | [INFO] [stderr] 401 | let v5 = v3 + v4; [INFO] [stderr] | ^^ help: if this is intentional, prefix it with an underscore: `_v5` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/main.rs:168:9 [INFO] [stderr] | [INFO] [stderr] 168 | let mut idx = idx + 1; [INFO] [stderr] | ----^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_mut)]` on by default [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/main.rs:321:9 [INFO] [stderr] | [INFO] [stderr] 321 | let mut idx = idx + 1; [INFO] [stderr] | ----^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/main.rs:380:9 [INFO] [stderr] | [INFO] [stderr] 380 | let mut iter = buffer.chunks(2); [INFO] [stderr] | ----^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: enum is never used: `Value` [INFO] [stderr] --> src/main.rs:366:6 [INFO] [stderr] | [INFO] [stderr] 366 | enum Value { [INFO] [stderr] | ^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: 11 warnings emitted [INFO] [stderr] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.22s [INFO] [stderr] Running /opt/rustwide/target/debug/deps/synacor-a1fe17bac1682f93 [INFO] [stdout] [INFO] [stdout] running 1 test [INFO] running `"docker" "inspect" "0b1c698948db8333e5cae9ea67c9bfb988a41fd3d72353e49e3b9401fe36f6b1"` [INFO] running `"docker" "rm" "-f" "0b1c698948db8333e5cae9ea67c9bfb988a41fd3d72353e49e3b9401fe36f6b1"` [INFO] [stdout] 0b1c698948db8333e5cae9ea67c9bfb988a41fd3d72353e49e3b9401fe36f6b1