[INFO] updating cached repository https://github.com/guildenstern70/RustLearn
[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] 3bbe952f1b73bf6078e73e8b46d8f9b07bb7607e
[INFO] testing guildenstern70/RustLearn against master#8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e for pr-74409
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fguildenstern70%2FRustLearn" "/workspace/builds/worker-9/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/guildenstern70/RustLearn on toolchain 8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/guildenstern70/RustLearn
[INFO] finished tweaking git repo https://github.com/guildenstern70/RustLearn
[INFO] tweaked toml for git repo https://github.com/guildenstern70/RustLearn written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/guildenstern70/RustLearn already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0db11399d8f11debb7f2b1b13d997bed0d9739f4034e46cb7d32c8f52417ffa4
[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" "0db11399d8f11debb7f2b1b13d997bed0d9739f4034e46cb7d32c8f52417ffa4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0db11399d8f11debb7f2b1b13d997bed0d9739f4034e46cb7d32c8f52417ffa4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0db11399d8f11debb7f2b1b13d997bed0d9739f4034e46cb7d32c8f52417ffa4", kill_on_drop: false }`
[INFO] [stdout] 0db11399d8f11debb7f2b1b13d997bed0d9739f4034e46cb7d32c8f52417ffa4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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=forbid" "-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:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "build" "--frozen" "--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] 99b4b1c67d67f7eef3b4b0592cf48a0425c1b37826af7f40619b6a7afa97faa7
[INFO] running `Command { std: "docker" "start" "-a" "99b4b1c67d67f7eef3b4b0592cf48a0425c1b37826af7f40619b6a7afa97faa7", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust_learn v0.1.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.65s
[INFO] running `Command { std: "docker" "inspect" "99b4b1c67d67f7eef3b4b0592cf48a0425c1b37826af7f40619b6a7afa97faa7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "99b4b1c67d67f7eef3b4b0592cf48a0425c1b37826af7f40619b6a7afa97faa7", kill_on_drop: false }`
[INFO] [stdout] 99b4b1c67d67f7eef3b4b0592cf48a0425c1b37826af7f40619b6a7afa97faa7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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=forbid" "-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:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 15fc0d2af7b28d28fda3bc16e289746aaa42bd946a2c0b9dcff88667dfa9710d
[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" "15fc0d2af7b28d28fda3bc16e289746aaa42bd946a2c0b9dcff88667dfa9710d", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust_learn v0.1.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `number_option`
[INFO] [stdout]   --> src/collections.rs:58:13
[INFO] [stdout]    |
[INFO] [stdout] 58 |         let number_option = get_number(123);
[INFO] [stdout]    |             ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_number_option`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` 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 0.48s
[INFO] running `Command { std: "docker" "inspect" "15fc0d2af7b28d28fda3bc16e289746aaa42bd946a2c0b9dcff88667dfa9710d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "15fc0d2af7b28d28fda3bc16e289746aaa42bd946a2c0b9dcff88667dfa9710d", kill_on_drop: false }`
[INFO] [stdout] 15fc0d2af7b28d28fda3bc16e289746aaa42bd946a2c0b9dcff88667dfa9710d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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=forbid" "-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:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] ea0ce4be12872b96f14f2a2ccc377481828624fb3d6fceb66b7d01cf2b6d4d03
[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" "ea0ce4be12872b96f14f2a2ccc377481828624fb3d6fceb66b7d01cf2b6d4d03", 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: unused variable: `number_option`
[INFO] [stderr]   --> src/collections.rs:58:13
[INFO] [stderr]    |
[INFO] [stderr] 58 |         let number_option = get_number(123);
[INFO] [stderr]    |             ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_number_option`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.69s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/rust_learn-11ee5311c6b03d69
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test functions::tests::a_simple_sum_test ... ok
[INFO] [stdout] test loops::tests::loop_test ... ok
[INFO] [stdout] test collections::tests::get_number_test ... ok
[INFO] [stdout] test ownership::tests::string_len_test ... ok
[INFO] [stdout] test collections::tests::get_month_name_test ... ok
[INFO] [stdout] test collections::tests::get_non_existent_number_test ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "ea0ce4be12872b96f14f2a2ccc377481828624fb3d6fceb66b7d01cf2b6d4d03", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ea0ce4be12872b96f14f2a2ccc377481828624fb3d6fceb66b7d01cf2b6d4d03", kill_on_drop: false }`
[INFO] [stdout] ea0ce4be12872b96f14f2a2ccc377481828624fb3d6fceb66b7d01cf2b6d4d03