[INFO] cloning repository https://github.com/biwakonbu/rscheme
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/biwakonbu/rscheme" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbiwakonbu%2Frscheme", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbiwakonbu%2Frscheme'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0289be7873955bededb3cefcb0f875a1ceb6086c
[INFO] testing biwakonbu/rscheme against 1.60.0 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbiwakonbu%2Frscheme" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/biwakonbu/rscheme 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/biwakonbu/rscheme
[INFO] finished tweaking git repo https://github.com/biwakonbu/rscheme
[INFO] tweaked toml for git repo https://github.com/biwakonbu/rscheme written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/biwakonbu/rscheme 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]  Downloading crates ...
[INFO] [stderr]   Downloaded dirs-sys-next v0.1.1
[INFO] [stderr]   Downloaded nix v0.19.1
[INFO] [stderr]   Downloaded rustyline v7.1.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] 6139ea295ec6e793258deba507add23e687eba697d6d6d7044221aff92ef89be
[INFO] running `Command { std: "docker" "start" "-a" "6139ea295ec6e793258deba507add23e687eba697d6d6d7044221aff92ef89be", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6139ea295ec6e793258deba507add23e687eba697d6d6d7044221aff92ef89be", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6139ea295ec6e793258deba507add23e687eba697d6d6d7044221aff92ef89be", kill_on_drop: false }`
[INFO] [stdout] 6139ea295ec6e793258deba507add23e687eba697d6d6d7044221aff92ef89be
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] 51dae381b412da18708d6087751209131ef1a22e07548394791338222cab9e3e
[INFO] running `Command { std: "docker" "start" "-a" "51dae381b412da18708d6087751209131ef1a22e07548394791338222cab9e3e", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.81
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]    Compiling utf8parse v0.2.0
[INFO] [stderr]    Compiling dirs-sys-next v0.1.1
[INFO] [stderr]    Compiling nix v0.19.1
[INFO] [stderr]    Compiling fs2 v0.4.3
[INFO] [stderr]    Compiling dirs-next v2.0.0
[INFO] [stderr]    Compiling rustyline v7.1.0
[INFO] [stderr]    Compiling rscheme v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `ast`
[INFO] [stdout]  --> src/core/eval.rs:3:13
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn eval(ast: AST) {
[INFO] [stdout]   |             ^^^ help: if this is intentional, prefix it with an underscore: `_ast`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `ast` is never read
[INFO] [stdout]   --> src/core/read.rs:17:13
[INFO] [stdout]    |
[INFO] [stdout] 17 |     let mut ast = AST::new();
[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: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.94s
[INFO] running `Command { std: "docker" "inspect" "51dae381b412da18708d6087751209131ef1a22e07548394791338222cab9e3e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "51dae381b412da18708d6087751209131ef1a22e07548394791338222cab9e3e", kill_on_drop: false }`
[INFO] [stdout] 51dae381b412da18708d6087751209131ef1a22e07548394791338222cab9e3e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] 2d44b079cb18078b9a80ce46aaa69f7bad1a516337f20527823b68ff0d1a0fb2
[INFO] running `Command { std: "docker" "start" "-a" "2d44b079cb18078b9a80ce46aaa69f7bad1a516337f20527823b68ff0d1a0fb2", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling rscheme v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `ast`
[INFO] [stdout]  --> src/core/eval.rs:3:13
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn eval(ast: AST) {
[INFO] [stdout]   |             ^^^ help: if this is intentional, prefix it with an underscore: `_ast`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `ast` is never read
[INFO] [stdout]   --> src/core/read.rs:17:13
[INFO] [stdout]    |
[INFO] [stdout] 17 |     let mut ast = AST::new();
[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: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ast`
[INFO] [stdout]  --> src/core/eval.rs:3:13
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn eval(ast: AST) {
[INFO] [stdout]   |             ^^^ help: if this is intentional, prefix it with an underscore: `_ast`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `ast` is never read
[INFO] [stdout]   --> src/core/read.rs:17:13
[INFO] [stdout]    |
[INFO] [stdout] 17 |     let mut ast = AST::new();
[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: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.48s
[INFO] running `Command { std: "docker" "inspect" "2d44b079cb18078b9a80ce46aaa69f7bad1a516337f20527823b68ff0d1a0fb2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2d44b079cb18078b9a80ce46aaa69f7bad1a516337f20527823b68ff0d1a0fb2", kill_on_drop: false }`
[INFO] [stdout] 2d44b079cb18078b9a80ce46aaa69f7bad1a516337f20527823b68ff0d1a0fb2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] 2d9f6ad1e7ea0893da931f9333f1668c6ad8723e858f65f763dd9be712cac4eb
[INFO] running `Command { std: "docker" "start" "-a" "2d9f6ad1e7ea0893da931f9333f1668c6ad8723e858f65f763dd9be712cac4eb", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: unused variable: `ast`
[INFO] [stderr]  --> src/core/eval.rs:3:13
[INFO] [stderr]   |
[INFO] [stderr] 3 | pub fn eval(ast: AST) {
[INFO] [stderr]   |             ^^^ help: if this is intentional, prefix it with an underscore: `_ast`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `ast` is never read
[INFO] [stderr]   --> src/core/read.rs:17:13
[INFO] [stderr]    |
[INFO] [stderr] 17 |     let mut ast = AST::new();
[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: `rscheme` (lib) generated 2 warnings
[INFO] [stderr] warning: `rscheme` (lib test) generated 2 warnings (2 duplicates)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.33s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/rscheme-45ed5edb59e1b685)
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/rscheme-71fe898dc4afc202)
[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] [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]    Doc-tests rscheme
[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" "2d9f6ad1e7ea0893da931f9333f1668c6ad8723e858f65f763dd9be712cac4eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2d9f6ad1e7ea0893da931f9333f1668c6ad8723e858f65f763dd9be712cac4eb", kill_on_drop: false }`
[INFO] [stdout] 2d9f6ad1e7ea0893da931f9333f1668c6ad8723e858f65f763dd9be712cac4eb