[INFO] fetching crate felt 0.2.0...
[INFO] testing felt-0.2.0 against beta-2022-04-10 for beta-1.61-1
[INFO] extracting crate felt 0.2.0 into /workspace/builds/worker-21/source
[INFO] validating manifest of crates.io crate felt 0.2.0 on toolchain beta-2022-04-10
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate felt 0.2.0
[INFO] finished tweaking crates.io crate felt 0.2.0
[INFO] tweaked toml for crates.io crate felt 0.2.0 written to /workspace/builds/worker-21/source/Cargo.toml
[INFO] crate crates.io crate felt 0.2.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/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" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0b99bcd745c407d8794afb620cf307c817ce47ee7097c6ef88e6f2b3bb108179
[INFO] running `Command { std: "docker" "start" "-a" "0b99bcd745c407d8794afb620cf307c817ce47ee7097c6ef88e6f2b3bb108179", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0b99bcd745c407d8794afb620cf307c817ce47ee7097c6ef88e6f2b3bb108179", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0b99bcd745c407d8794afb620cf307c817ce47ee7097c6ef88e6f2b3bb108179", kill_on_drop: false }`
[INFO] [stdout] 0b99bcd745c407d8794afb620cf307c817ce47ee7097c6ef88e6f2b3bb108179
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/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" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] db84ac3b71e18ba845c1ad9262e458e61d34f53c1e240deb2e92bb5119c6a884
[INFO] running `Command { std: "docker" "start" "-a" "db84ac3b71e18ba845c1ad9262e458e61d34f53c1e240deb2e92bb5119c6a884", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.72
[INFO] [stderr]    Compiling libc v0.2.80
[INFO] [stderr]    Compiling serde v1.0.126
[INFO] [stderr]    Compiling proc-macro2 v1.0.26
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]    Compiling dirs-sys v0.3.6
[INFO] [stderr]    Compiling dirs v3.0.2
[INFO] [stderr]    Compiling serde_derive v1.0.126
[INFO] [stderr]    Compiling toml v0.5.8
[INFO] [stderr]    Compiling felt v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `use_node_modules`
[INFO] [stdout]   --> src/felt.rs:83:5
[INFO] [stdout]    |
[INFO] [stdout] 83 |     use_node_modules: bool,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] note: `FeltCommand` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/felt.rs:79:10
[INFO] [stdout]    |
[INFO] [stdout] 79 | #[derive(Debug)]
[INFO] [stdout]    |          ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 13.54s
[INFO] running `Command { std: "docker" "inspect" "db84ac3b71e18ba845c1ad9262e458e61d34f53c1e240deb2e92bb5119c6a884", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "db84ac3b71e18ba845c1ad9262e458e61d34f53c1e240deb2e92bb5119c6a884", kill_on_drop: false }`
[INFO] [stdout] db84ac3b71e18ba845c1ad9262e458e61d34f53c1e240deb2e92bb5119c6a884
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/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" "+beta-2022-04-10" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 298ff5227e9690b0bcf8d099a5ff2c8bb1af072b9409928dffe7abd17afc4435
[INFO] running `Command { std: "docker" "start" "-a" "298ff5227e9690b0bcf8d099a5ff2c8bb1af072b9409928dffe7abd17afc4435", kill_on_drop: false }`
[INFO] [stderr]    Compiling felt v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `use_node_modules`
[INFO] [stdout]   --> src/felt.rs:83:5
[INFO] [stdout]    |
[INFO] [stdout] 83 |     use_node_modules: bool,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] note: `FeltCommand` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/felt.rs:79:10
[INFO] [stdout]    |
[INFO] [stdout] 79 | #[derive(Debug)]
[INFO] [stdout]    |          ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.46s
[INFO] [stderr]   Executable unittests src/felt.rs (/opt/rustwide/target/debug/deps/felt-d085d47c8ab29f9a)
[INFO] running `Command { std: "docker" "inspect" "298ff5227e9690b0bcf8d099a5ff2c8bb1af072b9409928dffe7abd17afc4435", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "298ff5227e9690b0bcf8d099a5ff2c8bb1af072b9409928dffe7abd17afc4435", kill_on_drop: false }`
[INFO] [stdout] 298ff5227e9690b0bcf8d099a5ff2c8bb1af072b9409928dffe7abd17afc4435
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/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" "+beta-2022-04-10" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] c5f12f8b5c99fbc5274a577437ee051ac66f2ffae917d9f736f28e51a56ac9a3
[INFO] running `Command { std: "docker" "start" "-a" "c5f12f8b5c99fbc5274a577437ee051ac66f2ffae917d9f736f28e51a56ac9a3", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: field is never read: `use_node_modules`
[INFO] [stderr]   --> src/felt.rs:83:5
[INFO] [stderr]    |
[INFO] [stderr] 83 |     use_node_modules: bool,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] note: `FeltCommand` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr]   --> src/felt.rs:79:10
[INFO] [stderr]    |
[INFO] [stderr] 79 | #[derive(Debug)]
[INFO] [stderr]    |          ^^^^^
[INFO] [stderr]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: `felt` (bin "felt" test) generated 1 warning
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests src/felt.rs (/opt/rustwide/target/debug/deps/felt-d085d47c8ab29f9a)
[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" "c5f12f8b5c99fbc5274a577437ee051ac66f2ffae917d9f736f28e51a56ac9a3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c5f12f8b5c99fbc5274a577437ee051ac66f2ffae917d9f736f28e51a56ac9a3", kill_on_drop: false }`
[INFO] [stdout] c5f12f8b5c99fbc5274a577437ee051ac66f2ffae917d9f736f28e51a56ac9a3