[INFO] cloning repository https://github.com/old-student/algorithms1-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/old-student/algorithms1-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fold-student%2Falgorithms1-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fold-student%2Falgorithms1-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9539fc06f275c37625a51292eb06c72621639517
[INFO] testing old-student/algorithms1-rust against 1.60.0 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fold-student%2Falgorithms1-rust" "/workspace/builds/worker-21/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-21/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/old-student/algorithms1-rust on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/old-student/algorithms1-rust
[INFO] finished tweaking git repo https://github.com/old-student/algorithms1-rust
[INFO] tweaked toml for git repo https://github.com/old-student/algorithms1-rust written to /workspace/builds/worker-21/source/Cargo.toml
[INFO] crate git repo https://github.com/old-student/algorithms1-rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded winapi-build v0.1.0
[INFO] [stderr]   Downloaded kernel32-sys v0.1.2
[INFO] [stderr]   Downloaded winapi v0.1.23
[INFO] [stderr]   Downloaded time v0.1.30
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b4ddf34000624cbb5294a5bdaaedd90031a5c4cf9922c5717b9a40e7df318707
[INFO] running `Command { std: "docker" "start" "-a" "b4ddf34000624cbb5294a5bdaaedd90031a5c4cf9922c5717b9a40e7df318707", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b4ddf34000624cbb5294a5bdaaedd90031a5c4cf9922c5717b9a40e7df318707", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b4ddf34000624cbb5294a5bdaaedd90031a5c4cf9922c5717b9a40e7df318707", kill_on_drop: false }`
[INFO] [stdout] b4ddf34000624cbb5294a5bdaaedd90031a5c4cf9922c5717b9a40e7df318707
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/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=warn" "-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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8d773ee505f44351acd6fb99e85869bc9c0023176213d90af8a5dea589d63195
[INFO] running `Command { std: "docker" "start" "-a" "8d773ee505f44351acd6fb99e85869bc9c0023176213d90af8a5dea589d63195", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling winapi-build v0.1.0
[INFO] [stderr]    Compiling libc v0.1.8
[INFO] [stderr]    Compiling winapi v0.1.23
[INFO] [stderr]    Compiling kernel32-sys v0.1.2
[INFO] [stderr]    Compiling time v0.1.30
[INFO] [stderr]    Compiling algorithms v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]   --> src/inversions_counter/mod.rs:65:18
[INFO] [stdout]    |
[INFO] [stdout] 65 |         for i in (begin_left..end_right+1) {
[INFO] [stdout]    |                  ^                       ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 65 -         for i in (begin_left..end_right+1) {
[INFO] [stdout] 65 +         for i in begin_left..end_right+1 {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.71s
[INFO] running `Command { std: "docker" "inspect" "8d773ee505f44351acd6fb99e85869bc9c0023176213d90af8a5dea589d63195", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8d773ee505f44351acd6fb99e85869bc9c0023176213d90af8a5dea589d63195", kill_on_drop: false }`
[INFO] [stdout] 8d773ee505f44351acd6fb99e85869bc9c0023176213d90af8a5dea589d63195
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/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=warn" "-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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 47e18cdb74d763a67c78a3147613117dd9a363ccaf3a46b06ce7f9ab7ee3befc
[INFO] running `Command { std: "docker" "start" "-a" "47e18cdb74d763a67c78a3147613117dd9a363ccaf3a46b06ce7f9ab7ee3befc", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling algorithms v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]   --> src/inversions_counter/mod.rs:65:18
[INFO] [stdout]    |
[INFO] [stdout] 65 |         for i in (begin_left..end_right+1) {
[INFO] [stdout]    |                  ^                       ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 65 -         for i in (begin_left..end_right+1) {
[INFO] [stdout] 65 +         for i in begin_left..end_right+1 {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 4.86s
[INFO] running `Command { std: "docker" "inspect" "47e18cdb74d763a67c78a3147613117dd9a363ccaf3a46b06ce7f9ab7ee3befc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "47e18cdb74d763a67c78a3147613117dd9a363ccaf3a46b06ce7f9ab7ee3befc", kill_on_drop: false }`
[INFO] [stdout] 47e18cdb74d763a67c78a3147613117dd9a363ccaf3a46b06ce7f9ab7ee3befc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/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=warn" "-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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] c68eb8bd8b51f5010b08a241cf5f54f996180c6915851a14d729d6fcfb5defac
[INFO] running `Command { std: "docker" "start" "-a" "c68eb8bd8b51f5010b08a241cf5f54f996180c6915851a14d729d6fcfb5defac", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stderr]   --> src/inversions_counter/mod.rs:65:18
[INFO] [stdout] 
[INFO] [stderr]    |
[INFO] [stdout] running 0 tests
[INFO] [stderr] 65 |         for i in (begin_left..end_right+1) {
[INFO] [stdout] 
[INFO] [stderr]    |                  ^                       ^
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr]    |
[INFO] [stdout] 
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr] 65 -         for i in (begin_left..end_right+1) {
[INFO] [stderr] 65 +         for i in begin_left..end_right+1 {
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: `algorithms` (bin "algorithms" test) generated 1 warning
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.34s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/algorithms-94a4dafc8530bc0a)
[INFO] running `Command { std: "docker" "inspect" "c68eb8bd8b51f5010b08a241cf5f54f996180c6915851a14d729d6fcfb5defac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c68eb8bd8b51f5010b08a241cf5f54f996180c6915851a14d729d6fcfb5defac", kill_on_drop: false }`
[INFO] [stdout] c68eb8bd8b51f5010b08a241cf5f54f996180c6915851a14d729d6fcfb5defac