[INFO] cloning repository https://github.com/ldbrierley/learn_rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ldbrierley/learn_rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fldbrierley%2Flearn_rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fldbrierley%2Flearn_rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] af7353e3dc163c6d1513ba6983737adfae726e62
[INFO] testing ldbrierley/learn_rust against beta-2021-09-08 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fldbrierley%2Flearn_rust" "/workspace/builds/worker-10/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-10/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ldbrierley/learn_rust on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ldbrierley/learn_rust
[INFO] finished tweaking git repo https://github.com/ldbrierley/learn_rust
[INFO] tweaked toml for git repo https://github.com/ldbrierley/learn_rust written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate git repo https://github.com/ldbrierley/learn_rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d69e74f1841cf0605c0261f5f5b453642b39b86cff8b9febf288458fe10802a0
[INFO] running `Command { std: "docker" "start" "-a" "d69e74f1841cf0605c0261f5f5b453642b39b86cff8b9febf288458fe10802a0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d69e74f1841cf0605c0261f5f5b453642b39b86cff8b9febf288458fe10802a0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d69e74f1841cf0605c0261f5f5b453642b39b86cff8b9febf288458fe10802a0", kill_on_drop: false }`
[INFO] [stdout] d69e74f1841cf0605c0261f5f5b453642b39b86cff8b9febf288458fe10802a0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2ccb62421b18ec480a47b755165df4a4de5ab23e9cd3d1d1bc19f565cf71eba1
[INFO] running `Command { std: "docker" "start" "-a" "2ccb62421b18ec480a47b755165df4a4de5ab23e9cd3d1d1bc19f565cf71eba1", kill_on_drop: false }`
[INFO] [stderr]    Compiling all_numbers v0.1.0 (/opt/rustwide/workdir/all_numbers)
[INFO] [stderr]    Compiling rand v0.5.5
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]  --> all_numbers/src/main.rs:4:19
[INFO] [stdout]   |
[INFO] [stdout] 4 |     for number in (1..) {
[INFO] [stdout]   |                   ^^^^^ help: remove these parentheses
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling guessing_game v0.1.0 (/opt/rustwide/workdir/guessing_game)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.73s
[INFO] running `Command { std: "docker" "inspect" "2ccb62421b18ec480a47b755165df4a4de5ab23e9cd3d1d1bc19f565cf71eba1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2ccb62421b18ec480a47b755165df4a4de5ab23e9cd3d1d1bc19f565cf71eba1", kill_on_drop: false }`
[INFO] [stdout] 2ccb62421b18ec480a47b755165df4a4de5ab23e9cd3d1d1bc19f565cf71eba1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 642334be297422a07da61cd568602975ef846a9392668150d9b126f6b7d67401
[INFO] running `Command { std: "docker" "start" "-a" "642334be297422a07da61cd568602975ef846a9392668150d9b126f6b7d67401", kill_on_drop: false }`
[INFO] [stderr]    Compiling all_numbers v0.1.0 (/opt/rustwide/workdir/all_numbers)
[INFO] [stderr]    Compiling guessing_game v0.1.0 (/opt/rustwide/workdir/guessing_game)
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]  --> all_numbers/src/main.rs:4:19
[INFO] [stdout]   |
[INFO] [stdout] 4 |     for number in (1..) {
[INFO] [stdout]   |                   ^^^^^ help: remove these parentheses
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.68s
[INFO] running `Command { std: "docker" "inspect" "642334be297422a07da61cd568602975ef846a9392668150d9b126f6b7d67401", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "642334be297422a07da61cd568602975ef846a9392668150d9b126f6b7d67401", kill_on_drop: false }`
[INFO] [stdout] 642334be297422a07da61cd568602975ef846a9392668150d9b126f6b7d67401
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 6a29a1e6e3304a977a90634a8774f3bf162c5621f90f3c186a4cdcc2f0c236cf
[INFO] running `Command { std: "docker" "start" "-a" "6a29a1e6e3304a977a90634a8774f3bf162c5621f90f3c186a4cdcc2f0c236cf", kill_on_drop: false }`
[INFO] [stderr] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stderr]  --> all_numbers/src/main.rs:4:19
[INFO] [stderr]   |
[INFO] [stderr] 4 |     for number in (1..) {
[INFO] [stderr]   |                   ^^^^^ help: remove these parentheses
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `all_numbers` (bin "all_numbers" test) generated 1 warning
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/all_numbers-2b331c17791a2a53)
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/guessing_game-8ea88891c8575e48)
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "6a29a1e6e3304a977a90634a8774f3bf162c5621f90f3c186a4cdcc2f0c236cf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6a29a1e6e3304a977a90634a8774f3bf162c5621f90f3c186a4cdcc2f0c236cf", kill_on_drop: false }`
[INFO] [stdout] 6a29a1e6e3304a977a90634a8774f3bf162c5621f90f3c186a4cdcc2f0c236cf