[INFO] cloning repository https://github.com/jumang4423/rust_learn
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jumang4423/rust_learn" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjumang4423%2Frust_learn", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjumang4423%2Frust_learn'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 23124817e746125c7e0c3a1233d1249cd01a9c7f
[INFO] testing jumang4423/rust_learn against try#722e1797249a965b6335aebd65d777f917e498f1 for pr-91031
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjumang4423%2Frust_learn" "/workspace/builds/worker-98/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-98/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jumang4423/rust_learn on toolchain 722e1797249a965b6335aebd65d777f917e498f1
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/jumang4423/rust_learn
[INFO] finished tweaking git repo https://github.com/jumang4423/rust_learn
[INFO] tweaked toml for git repo https://github.com/jumang4423/rust_learn written to /workspace/builds/worker-98/source/Cargo.toml
[INFO] crate git repo https://github.com/jumang4423/rust_learn already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-98/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-98/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 020a8170413da0fd50b17eeb8c0bd982a0f1f78b37d84216d495d6ac8112e9b0
[INFO] running `Command { std: "docker" "start" "-a" "020a8170413da0fd50b17eeb8c0bd982a0f1f78b37d84216d495d6ac8112e9b0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "020a8170413da0fd50b17eeb8c0bd982a0f1f78b37d84216d495d6ac8112e9b0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "020a8170413da0fd50b17eeb8c0bd982a0f1f78b37d84216d495d6ac8112e9b0", kill_on_drop: false }`
[INFO] [stdout] 020a8170413da0fd50b17eeb8c0bd982a0f1f78b37d84216d495d6ac8112e9b0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-98/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-98/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=forbid" "-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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fef038bea889f406feeeb9dd38f2a8623589eb4168340b08d5f9fe2a084a18fc
[INFO] running `Command { std: "docker" "start" "-a" "fef038bea889f406feeeb9dd38f2a8623589eb4168340b08d5f9fe2a084a18fc", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.94
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling ppv-lite86 v0.2.10
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling rust_learn v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `thread_rng`
[INFO] [stdout]  --> src/main.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | use rand::{thread_rng, Rng};
[INFO] [stdout]   |            ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 02s
[INFO] running `Command { std: "docker" "inspect" "fef038bea889f406feeeb9dd38f2a8623589eb4168340b08d5f9fe2a084a18fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fef038bea889f406feeeb9dd38f2a8623589eb4168340b08d5f9fe2a084a18fc", kill_on_drop: false }`
[INFO] [stdout] fef038bea889f406feeeb9dd38f2a8623589eb4168340b08d5f9fe2a084a18fc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-98/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-98/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=forbid" "-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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c4facb6f3d745b85f429398ff67f988a777d0200dd77e244f04634f36a5b4915
[INFO] running `Command { std: "docker" "start" "-a" "c4facb6f3d745b85f429398ff67f988a777d0200dd77e244f04634f36a5b4915", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust_learn v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `thread_rng`
[INFO] [stdout]  --> src/main.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | use rand::{thread_rng, Rng};
[INFO] [stdout]   |            ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` 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 0.31s
[INFO] running `Command { std: "docker" "inspect" "c4facb6f3d745b85f429398ff67f988a777d0200dd77e244f04634f36a5b4915", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c4facb6f3d745b85f429398ff67f988a777d0200dd77e244f04634f36a5b4915", kill_on_drop: false }`
[INFO] [stdout] c4facb6f3d745b85f429398ff67f988a777d0200dd77e244f04634f36a5b4915
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-98/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-98/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=forbid" "-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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 2f27dabc81d306ca459a129b5c3a97e7e033a6841a5aa22c04b5b6b7ed18e104
[INFO] running `Command { std: "docker" "start" "-a" "2f27dabc81d306ca459a129b5c3a97e7e033a6841a5aa22c04b5b6b7ed18e104", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `thread_rng`
[INFO] [stderr]  --> src/main.rs:3:12
[INFO] [stderr]   |
[INFO] [stderr] 3 | use rand::{thread_rng, Rng};
[INFO] [stderr]   |            ^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `rust_learn` (bin "rust_learn" test) generated 1 warning
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/rust_learn-3e747c5d49e201d0)
[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" "2f27dabc81d306ca459a129b5c3a97e7e033a6841a5aa22c04b5b6b7ed18e104", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2f27dabc81d306ca459a129b5c3a97e7e033a6841a5aa22c04b5b6b7ed18e104", kill_on_drop: false }`
[INFO] [stdout] 2f27dabc81d306ca459a129b5c3a97e7e033a6841a5aa22c04b5b6b7ed18e104