[INFO] cloning repository https://github.com/McGiver-/rust_practice
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/McGiver-/rust_practice" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMcGiver-%2Frust_practice", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMcGiver-%2Frust_practice'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c8a73d658f33fc5ce21503726c9815dba08bf932
[INFO] testing McGiver-/rust_practice against beta-2020-10-09 for beta-1.48-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMcGiver-%2Frust_practice" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/McGiver-/rust_practice on toolchain beta-2020-10-09
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/McGiver-/rust_practice
[INFO] finished tweaking git repo https://github.com/McGiver-/rust_practice
[INFO] tweaked toml for git repo https://github.com/McGiver-/rust_practice written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/McGiver-/rust_practice already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+beta-2020-10-09" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 440f0c0a363c5e015518807321d9cc4c47ac309e1328ab99c8e4ea448555d7e7
[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" "440f0c0a363c5e015518807321d9cc4c47ac309e1328ab99c8e4ea448555d7e7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "440f0c0a363c5e015518807321d9cc4c47ac309e1328ab99c8e4ea448555d7e7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "440f0c0a363c5e015518807321d9cc4c47ac309e1328ab99c8e4ea448555d7e7", kill_on_drop: false }`
[INFO] [stdout] 440f0c0a363c5e015518807321d9cc4c47ac309e1328ab99c8e4ea448555d7e7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+beta-2020-10-09" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 013c02f4aa2de2f9fe5716a397e944ff76b8fcc9fa8f7ce508b13bb4aab58a85
[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" "013c02f4aa2de2f9fe5716a397e944ff76b8fcc9fa8f7ce508b13bb4aab58a85", kill_on_drop: false }`
[INFO] [stderr]    Compiling validate_palindrome v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]   --> src/main.rs:31:28
[INFO] [stdout]    |
[INFO] [stdout] 31 | pub fn bracket_balanced<T>(v: &[T],map: HashMap<T,T>) -> bool where
[INFO] [stdout]    |                            ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `map`
[INFO] [stdout]   --> src/main.rs:31:36
[INFO] [stdout]    |
[INFO] [stdout] 31 | pub fn bracket_balanced<T>(v: &[T],map: HashMap<T,T>) -> bool where
[INFO] [stdout]    |                                    ^^^ help: if this is intentional, prefix it with an underscore: `_map`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.57s
[INFO] running `Command { std: "docker" "inspect" "013c02f4aa2de2f9fe5716a397e944ff76b8fcc9fa8f7ce508b13bb4aab58a85", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "013c02f4aa2de2f9fe5716a397e944ff76b8fcc9fa8f7ce508b13bb4aab58a85", kill_on_drop: false }`
[INFO] [stdout] 013c02f4aa2de2f9fe5716a397e944ff76b8fcc9fa8f7ce508b13bb4aab58a85
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+beta-2020-10-09" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b4360f6a635c06f9747706becc41de40fc6d4e652b4b15090411ccee450728db
[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" "b4360f6a635c06f9747706becc41de40fc6d4e652b4b15090411ccee450728db", kill_on_drop: false }`
[INFO] [stderr]    Compiling validate_palindrome v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]   --> src/main.rs:31:28
[INFO] [stdout]    |
[INFO] [stdout] 31 | pub fn bracket_balanced<T>(v: &[T],map: HashMap<T,T>) -> bool where
[INFO] [stdout]    |                            ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `map`
[INFO] [stdout]   --> src/main.rs:31:36
[INFO] [stdout]    |
[INFO] [stdout] 31 | pub fn bracket_balanced<T>(v: &[T],map: HashMap<T,T>) -> bool where
[INFO] [stdout]    |                                    ^^^ help: if this is intentional, prefix it with an underscore: `_map`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.14s
[INFO] running `Command { std: "docker" "inspect" "b4360f6a635c06f9747706becc41de40fc6d4e652b4b15090411ccee450728db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b4360f6a635c06f9747706becc41de40fc6d4e652b4b15090411ccee450728db", kill_on_drop: false }`
[INFO] [stdout] b4360f6a635c06f9747706becc41de40fc6d4e652b4b15090411ccee450728db
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+beta-2020-10-09" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 41357569baf92bb27c82883c7165280a1c38a1d7aa82548c80f5937445d8f1d7
[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" "41357569baf92bb27c82883c7165280a1c38a1d7aa82548c80f5937445d8f1d7", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `v`
[INFO] [stderr]   --> src/main.rs:31:28
[INFO] [stderr]    |
[INFO] [stderr] 31 | pub fn bracket_balanced<T>(v: &[T],map: HashMap<T,T>) -> bool where
[INFO] [stderr]    |                            ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `map`
[INFO] [stderr]   --> src/main.rs:31:36
[INFO] [stderr]    |
[INFO] [stderr] 31 | pub fn bracket_balanced<T>(v: &[T],map: HashMap<T,T>) -> bool where
[INFO] [stderr]    |                                    ^^^ help: if this is intentional, prefix it with an underscore: `_map`
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/validate_palindrome-8b8dceaa62349d07
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test tests::balanced_passes ... ok
[INFO] [stdout] test tests::balanced_failures ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "41357569baf92bb27c82883c7165280a1c38a1d7aa82548c80f5937445d8f1d7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "41357569baf92bb27c82883c7165280a1c38a1d7aa82548c80f5937445d8f1d7", kill_on_drop: false }`
[INFO] [stdout] 41357569baf92bb27c82883c7165280a1c38a1d7aa82548c80f5937445d8f1d7
