[INFO] cloning repository https://github.com/Tatsuonline/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/Tatsuonline/Rust-Practice" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTatsuonline%2FRust-Practice", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTatsuonline%2FRust-Practice'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b717f5972b85f037e54287eb4f8bf5cffa951880
[INFO] testing Tatsuonline/Rust-Practice against 1.60.0 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTatsuonline%2FRust-Practice" "/workspace/builds/worker-55/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-55/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Tatsuonline/Rust-Practice on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Tatsuonline/Rust-Practice
[INFO] finished tweaking git repo https://github.com/Tatsuonline/Rust-Practice
[INFO] tweaked toml for git repo https://github.com/Tatsuonline/Rust-Practice written to /workspace/builds/worker-55/source/Cargo.toml
[INFO] crate git repo https://github.com/Tatsuonline/Rust-Practice already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "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-55/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-55/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c2f5d7173032be74a8086dbf0a299547cde7a75c74e6cc98064d7d4ec5af524a
[INFO] running `Command { std: "docker" "start" "-a" "c2f5d7173032be74a8086dbf0a299547cde7a75c74e6cc98064d7d4ec5af524a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c2f5d7173032be74a8086dbf0a299547cde7a75c74e6cc98064d7d4ec5af524a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c2f5d7173032be74a8086dbf0a299547cde7a75c74e6cc98064d7d4ec5af524a", kill_on_drop: false }`
[INFO] [stdout] c2f5d7173032be74a8086dbf0a299547cde7a75c74e6cc98064d7d4ec5af524a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-55/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-55/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a97fdac8d5118b0eefcc4ff8d0636378aabd4c45654417bac85f791d7486278d
[INFO] running `Command { std: "docker" "start" "-a" "a97fdac8d5118b0eefcc4ff8d0636378aabd4c45654417bac85f791d7486278d", kill_on_drop: false }`
[INFO] [stderr]    Compiling Rust-Practice v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `postfix` is never read
[INFO] [stdout]    --> src/main.rs:113:13
[INFO] [stdout]     |
[INFO] [stdout] 113 |     let mut postfix = "th";
[INFO] [stdout]     |             ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: crate `Rust_Practice` should have a snake case name
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout]   = help: convert the identifier to snake case: `rust_practice`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.51s
[INFO] running `Command { std: "docker" "inspect" "a97fdac8d5118b0eefcc4ff8d0636378aabd4c45654417bac85f791d7486278d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a97fdac8d5118b0eefcc4ff8d0636378aabd4c45654417bac85f791d7486278d", kill_on_drop: false }`
[INFO] [stdout] a97fdac8d5118b0eefcc4ff8d0636378aabd4c45654417bac85f791d7486278d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-55/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-55/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 877a39d1672508514f1717db9ad9a818b94e33b9eed7f310ae84d0149b7394e6
[INFO] running `Command { std: "docker" "start" "-a" "877a39d1672508514f1717db9ad9a818b94e33b9eed7f310ae84d0149b7394e6", kill_on_drop: false }`
[INFO] [stderr]    Compiling Rust-Practice v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `postfix` is never read
[INFO] [stdout]    --> src/main.rs:113:13
[INFO] [stdout]     |
[INFO] [stdout] 113 |     let mut postfix = "th";
[INFO] [stdout]     |             ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: crate `Rust_Practice` should have a snake case name
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout]   = help: convert the identifier to snake case: `rust_practice`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.61s
[INFO] running `Command { std: "docker" "inspect" "877a39d1672508514f1717db9ad9a818b94e33b9eed7f310ae84d0149b7394e6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "877a39d1672508514f1717db9ad9a818b94e33b9eed7f310ae84d0149b7394e6", kill_on_drop: false }`
[INFO] [stdout] 877a39d1672508514f1717db9ad9a818b94e33b9eed7f310ae84d0149b7394e6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-55/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-55/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 4d88cb128d3f57c0478719e51ca78f8e66c9a4b9ff07375f8d9ae57befe5ecf2
[INFO] running `Command { std: "docker" "start" "-a" "4d88cb128d3f57c0478719e51ca78f8e66c9a4b9ff07375f8d9ae57befe5ecf2", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stdout] 
[INFO] [stderr] warning: value assigned to `postfix` is never read
[INFO] [stdout] running 0 tests
[INFO] [stderr]    --> src/main.rs:113:13
[INFO] [stdout] 
[INFO] [stderr]     |
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr] 113 |     let mut postfix = "th";
[INFO] [stdout] 
[INFO] [stderr]     |             ^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: crate `Rust_Practice` should have a snake case name
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr]   = help: convert the identifier to snake case: `rust_practice`
[INFO] [stderr] 
[INFO] [stderr] warning: `Rust-Practice` (bin "Rust-Practice" test) generated 2 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 49.54s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/Rust_Practice-bfe1a6a9b7fdbb7c)
[INFO] running `Command { std: "docker" "inspect" "4d88cb128d3f57c0478719e51ca78f8e66c9a4b9ff07375f8d9ae57befe5ecf2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4d88cb128d3f57c0478719e51ca78f8e66c9a4b9ff07375f8d9ae57befe5ecf2", kill_on_drop: false }`
[INFO] [stdout] 4d88cb128d3f57c0478719e51ca78f8e66c9a4b9ff07375f8d9ae57befe5ecf2