[INFO] cloning repository https://github.com/bruce/rust-mazes
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/bruce/rust-mazes" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbruce%2Frust-mazes", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbruce%2Frust-mazes'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 678739609b4cc22ca4c08e98f2c38976f34c77cf
[INFO] testing bruce/rust-mazes against 1.47.0 for beta-1.48-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbruce%2Frust-mazes" "/workspace/builds/worker-14/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-14/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/bruce/rust-mazes on toolchain 1.47.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/bruce/rust-mazes
[INFO] finished tweaking git repo https://github.com/bruce/rust-mazes
[INFO] tweaked toml for git repo https://github.com/bruce/rust-mazes written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate git repo https://github.com/bruce/rust-mazes already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "fetch" "--locked" "--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-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 22787a29db9f11180207f06b7876d4f67507adef0338effc47a0bd814627d97d
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "22787a29db9f11180207f06b7876d4f67507adef0338effc47a0bd814627d97d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "22787a29db9f11180207f06b7876d4f67507adef0338effc47a0bd814627d97d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "22787a29db9f11180207f06b7876d4f67507adef0338effc47a0bd814627d97d", kill_on_drop: false }`
[INFO] [stdout] 22787a29db9f11180207f06b7876d4f67507adef0338effc47a0bd814627d97d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 53a9fab190762d0bd1dfa73dad744cacaf438c7e389eab53f90449eaa79f1f8d
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "53a9fab190762d0bd1dfa73dad744cacaf438c7e389eab53f90449eaa79f1f8d", kill_on_drop: false }`
[INFO] [stderr]    Compiling mazes v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]   --> src/grid.rs:22:20
[INFO] [stdout]    |
[INFO] [stdout] 22 |         for col in (1..cols) {
[INFO] [stdout]    |                    ^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]   --> src/grid.rs:24:24
[INFO] [stdout]    |
[INFO] [stdout] 24 |             for row in (1..rows) {
[INFO] [stdout]    |                        ^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.53s
[INFO] running `Command { std: "docker" "inspect" "53a9fab190762d0bd1dfa73dad744cacaf438c7e389eab53f90449eaa79f1f8d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "53a9fab190762d0bd1dfa73dad744cacaf438c7e389eab53f90449eaa79f1f8d", kill_on_drop: false }`
[INFO] [stdout] 53a9fab190762d0bd1dfa73dad744cacaf438c7e389eab53f90449eaa79f1f8d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 26e3692097fa5443b5bb5de994efc1821d58d84484d0c2c3e70e2ddd33ce8058
[INFO] running `Command { std: "docker" "start" "-a" "26e3692097fa5443b5bb5de994efc1821d58d84484d0c2c3e70e2ddd33ce8058", kill_on_drop: false }`
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]   --> src/grid.rs:22:20
[INFO] [stdout]    |
[INFO] [stdout] 22 |         for col in (1..cols) {
[INFO] [stdout]    |                    ^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling mazes v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]   --> src/grid.rs:24:24
[INFO] [stdout]    |
[INFO] [stdout] 24 |             for row in (1..rows) {
[INFO] [stdout]    |                        ^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]   --> src/grid.rs:22:20
[INFO] [stdout]    |
[INFO] [stdout] 22 |         for col in (1..cols) {
[INFO] [stdout]    |                    ^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]   --> src/grid.rs:24:24
[INFO] [stdout]    |
[INFO] [stdout] 24 |             for row in (1..rows) {
[INFO] [stdout]    |                        ^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.22s
[INFO] running `Command { std: "docker" "inspect" "26e3692097fa5443b5bb5de994efc1821d58d84484d0c2c3e70e2ddd33ce8058", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "26e3692097fa5443b5bb5de994efc1821d58d84484d0c2c3e70e2ddd33ce8058", kill_on_drop: false }`
[INFO] [stdout] 26e3692097fa5443b5bb5de994efc1821d58d84484d0c2c3e70e2ddd33ce8058
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] b49a82720ee363ba6137ba9b41f9767fa0dcb4af70070260802534fce3d2071a
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "b49a82720ee363ba6137ba9b41f9767fa0dcb4af70070260802534fce3d2071a", kill_on_drop: false }`
[INFO] [stderr] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stderr]   --> src/grid.rs:22:20
[INFO] [stderr]    |
[INFO] [stderr] 22 |         for col in (1..cols) {
[INFO] [stderr]    |                    ^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stderr]   --> src/grid.rs:24:24
[INFO] [stderr]    |
[INFO] [stderr] 24 |             for row in (1..rows) {
[INFO] [stderr]    |                        ^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stderr]   --> src/grid.rs:22:20
[INFO] [stderr]    |
[INFO] [stderr] 22 |         for col in (1..cols) {
[INFO] [stderr]    |                    ^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stderr]   --> src/grid.rs:24:24
[INFO] [stderr]    |
[INFO] [stderr] 24 |             for row in (1..rows) {
[INFO] [stderr]    |                        ^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/mazes-55ca58572907285d
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test test::grid_cell ... ok
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/mazes-c2fe24de4e603f57
[INFO] [stdout] test test::grid_new ... ok
[INFO] [stderr]    Doc-tests mazes
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stderr]   --> /opt/rustwide/workdir/src/grid.rs:22:20
[INFO] [stderr]    |
[INFO] [stderr] 22 |         for col in (1..cols) {
[INFO] [stderr]    |                    ^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stderr]   --> /opt/rustwide/workdir/src/grid.rs:24:24
[INFO] [stderr]    |
[INFO] [stderr] 24 |             for row in (1..rows) {
[INFO] [stderr]    |                        ^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "b49a82720ee363ba6137ba9b41f9767fa0dcb4af70070260802534fce3d2071a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b49a82720ee363ba6137ba9b41f9767fa0dcb4af70070260802534fce3d2071a", kill_on_drop: false }`
[INFO] [stdout] b49a82720ee363ba6137ba9b41f9767fa0dcb4af70070260802534fce3d2071a
