[INFO] updating cached repository https://github.com/Cancain/rust_sandbox
[INFO] running `Command { std: "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", kill_on_drop: false }`
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9aa9e99db796b8fb451f61161b6cb0b9a0eeeb01
[INFO] testing Cancain/rust_sandbox against beta-2020-07-24 for beta-1.46-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCancain%2Frust_sandbox" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Cancain/rust_sandbox on toolchain beta-2020-07-24
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Cancain/rust_sandbox
[INFO] finished tweaking git repo https://github.com/Cancain/rust_sandbox
[INFO] tweaked toml for git repo https://github.com/Cancain/rust_sandbox written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/Cancain/rust_sandbox already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4e4c7fd5825f29fddcded28236f8d21fcbb8b7fb51603fa086a98a049bb92bbe
[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" "4e4c7fd5825f29fddcded28236f8d21fcbb8b7fb51603fa086a98a049bb92bbe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4e4c7fd5825f29fddcded28236f8d21fcbb8b7fb51603fa086a98a049bb92bbe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4e4c7fd5825f29fddcded28236f8d21fcbb8b7fb51603fa086a98a049bb92bbe", kill_on_drop: false }`
[INFO] [stdout] 4e4c7fd5825f29fddcded28236f8d21fcbb8b7fb51603fa086a98a049bb92bbe
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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=warn" "-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@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6eaf19dfe63026750fc4bf66d8fd28ec7294965e3d9d0d47ca3a1e4b1630ce5d
[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" "6eaf19dfe63026750fc4bf66d8fd28ec7294965e3d9d0d47ca3a1e4b1630ce5d", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.65
[INFO] [stderr]    Compiling getrandom v0.1.13
[INFO] [stderr]    Compiling ppv-lite86 v0.2.6
[INFO] [stderr]    Compiling c2-chacha v0.2.3
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling rand_chacha v0.2.1
[INFO] [stderr]    Compiling rand v0.7.2
[INFO] [stderr]    Compiling word_generator v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]  --> src/main.rs:5:32
[INFO] [stdout]   |
[INFO] [stdout] 5 |     generator::generate_word();;
[INFO] [stdout]   |                                ^ help: remove this semicolon
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `vocals`
[INFO] [stdout]  --> src/generator/mod.rs:8:9
[INFO] [stdout]   |
[INFO] [stdout] 8 |     let vocals = vec!['a', 'e', 'i', 'o', 'u', 'y'];
[INFO] [stdout]   |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_vocals`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.75s
[INFO] running `Command { std: "docker" "inspect" "6eaf19dfe63026750fc4bf66d8fd28ec7294965e3d9d0d47ca3a1e4b1630ce5d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6eaf19dfe63026750fc4bf66d8fd28ec7294965e3d9d0d47ca3a1e4b1630ce5d", kill_on_drop: false }`
[INFO] [stdout] 6eaf19dfe63026750fc4bf66d8fd28ec7294965e3d9d0d47ca3a1e4b1630ce5d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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=warn" "-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@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "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] d70eb5e2184ea83a94f498793e7e8ef652a1830ecfb3b8f78e7cb767c6cf4672
[INFO] running `Command { std: "docker" "start" "-a" "d70eb5e2184ea83a94f498793e7e8ef652a1830ecfb3b8f78e7cb767c6cf4672", kill_on_drop: false }`
[INFO] [stderr]    Compiling word_generator v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]  --> src/main.rs:5:32
[INFO] [stdout]   |
[INFO] [stdout] 5 |     generator::generate_word();;
[INFO] [stdout]   |                                ^ help: remove this semicolon
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `vocals`
[INFO] [stdout]  --> src/generator/mod.rs:8:9
[INFO] [stdout]   |
[INFO] [stdout] 8 |     let vocals = vec!['a', 'e', 'i', 'o', 'u', 'y'];
[INFO] [stdout]   |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_vocals`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.63s
[INFO] running `Command { std: "docker" "inspect" "d70eb5e2184ea83a94f498793e7e8ef652a1830ecfb3b8f78e7cb767c6cf4672", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d70eb5e2184ea83a94f498793e7e8ef652a1830ecfb3b8f78e7cb767c6cf4672", kill_on_drop: false }`
[INFO] [stdout] d70eb5e2184ea83a94f498793e7e8ef652a1830ecfb3b8f78e7cb767c6cf4672
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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=warn" "-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@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 9f18abf22c48dd791a1688ca68eb602928a41657ef0d1d74d05fe49d5d71b519
[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" "9f18abf22c48dd791a1688ca68eb602928a41657ef0d1d74d05fe49d5d71b519", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr] warning: unnecessary trailing semicolon
[INFO] [stdout] running 0 tests
[INFO] [stderr]  --> src/main.rs:5:32
[INFO] [stdout] 
[INFO] [stderr]   |
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stderr] 5 |     generator::generate_word();;
[INFO] [stdout] 
[INFO] [stderr]   |                                ^ help: remove this semicolon
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `vocals`
[INFO] [stderr]  --> src/generator/mod.rs:8:9
[INFO] [stderr]   |
[INFO] [stderr] 8 |     let vocals = vec!['a', 'e', 'i', 'o', 'u', 'y'];
[INFO] [stderr]   |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_vocals`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/word_generator-2a839f12b91f45e0
[INFO] running `Command { std: "docker" "inspect" "9f18abf22c48dd791a1688ca68eb602928a41657ef0d1d74d05fe49d5d71b519", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9f18abf22c48dd791a1688ca68eb602928a41657ef0d1d74d05fe49d5d71b519", kill_on_drop: false }`
[INFO] [stdout] 9f18abf22c48dd791a1688ca68eb602928a41657ef0d1d74d05fe49d5d71b519