[INFO] cloning repository https://github.com/reidswan/rlox
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/reidswan/rlox" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Freidswan%2Frlox", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Freidswan%2Frlox'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2b926b2c59ce1f8b7be8bec6dfbf1aaaceb9ebab
[INFO] testing reidswan/rlox against 1.49.0 for beta-1.50-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Freidswan%2Frlox" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/reidswan/rlox on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/reidswan/rlox
[INFO] finished tweaking git repo https://github.com/reidswan/rlox
[INFO] tweaked toml for git repo https://github.com/reidswan/rlox written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/reidswan/rlox already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 14552d3984db6a732c8175127a33d93b3ad33c734d6d2fa40fb16b6bf7fdd169
[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" "14552d3984db6a732c8175127a33d93b3ad33c734d6d2fa40fb16b6bf7fdd169", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "14552d3984db6a732c8175127a33d93b3ad33c734d6d2fa40fb16b6bf7fdd169", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "14552d3984db6a732c8175127a33d93b3ad33c734d6d2fa40fb16b6bf7fdd169", kill_on_drop: false }`
[INFO] [stdout] 14552d3984db6a732c8175127a33d93b3ad33c734d6d2fa40fb16b6bf7fdd169
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 060f90ed975ca2da3d201082cdb0679fb6f28f33c3b3b16d7bb6349b56012389
[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" "060f90ed975ca2da3d201082cdb0679fb6f28f33c3b3b16d7bb6349b56012389", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.66
[INFO] [stderr]    Compiling atty v0.2.13
[INFO] [stderr]    Compiling clap v2.33.0
[INFO] [stderr]    Compiling treelox v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/parser.rs:83:41
[INFO] [stdout]     |
[INFO] [stdout] 83  |       ($self:ident, $token_type:path) => {{
[INFO] [stdout]     |  _________________________________________^
[INFO] [stdout] 84  | |         let should_match = $self
[INFO] [stdout] 85  | |             .peek()
[INFO] [stdout] 86  | |             .ok_or(format!("EOF: Expected {} but got EOF", $token_type))?;
[INFO] [stdout] ...   |
[INFO] [stdout] 97  | |         }
[INFO] [stdout] 98  | |     }};
[INFO] [stdout]     | |_____^
[INFO] [stdout] ...
[INFO] [stdout] 236 |           consume!(self, Token::Semicolon);
[INFO] [stdout]     |           --------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/parser.rs:83:41
[INFO] [stdout]     |
[INFO] [stdout] 83  |       ($self:ident, $token_type:path) => {{
[INFO] [stdout]     |  _________________________________________^
[INFO] [stdout] 84  | |         let should_match = $self
[INFO] [stdout] 85  | |             .peek()
[INFO] [stdout] 86  | |             .ok_or(format!("EOF: Expected {} but got EOF", $token_type))?;
[INFO] [stdout] ...   |
[INFO] [stdout] 97  | |         }
[INFO] [stdout] 98  | |     }};
[INFO] [stdout]     | |_____^
[INFO] [stdout] ...
[INFO] [stdout] 249 |           consume!(self, Token::Semicolon);
[INFO] [stdout]     |           --------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/parser.rs:83:41
[INFO] [stdout]     |
[INFO] [stdout] 83  |       ($self:ident, $token_type:path) => {{
[INFO] [stdout]     |  _________________________________________^
[INFO] [stdout] 84  | |         let should_match = $self
[INFO] [stdout] 85  | |             .peek()
[INFO] [stdout] 86  | |             .ok_or(format!("EOF: Expected {} but got EOF", $token_type))?;
[INFO] [stdout] ...   |
[INFO] [stdout] 97  | |         }
[INFO] [stdout] 98  | |     }};
[INFO] [stdout]     | |_____^
[INFO] [stdout] ...
[INFO] [stdout] 261 |           consume!(self, Token::RightParen);
[INFO] [stdout]     |           ---------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 15.93s
[INFO] running `Command { std: "docker" "inspect" "060f90ed975ca2da3d201082cdb0679fb6f28f33c3b3b16d7bb6349b56012389", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "060f90ed975ca2da3d201082cdb0679fb6f28f33c3b3b16d7bb6349b56012389", kill_on_drop: false }`
[INFO] [stdout] 060f90ed975ca2da3d201082cdb0679fb6f28f33c3b3b16d7bb6349b56012389
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 10634e205a93d39649969d497055bf98368beeaf35966a4c7c78ccecd2fd1166
[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" "10634e205a93d39649969d497055bf98368beeaf35966a4c7c78ccecd2fd1166", kill_on_drop: false }`
[INFO] [stderr]    Compiling treelox v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/parser.rs:83:41
[INFO] [stdout]     |
[INFO] [stdout] 83  |       ($self:ident, $token_type:path) => {{
[INFO] [stdout]     |  _________________________________________^
[INFO] [stdout] 84  | |         let should_match = $self
[INFO] [stdout] 85  | |             .peek()
[INFO] [stdout] 86  | |             .ok_or(format!("EOF: Expected {} but got EOF", $token_type))?;
[INFO] [stdout] ...   |
[INFO] [stdout] 97  | |         }
[INFO] [stdout] 98  | |     }};
[INFO] [stdout]     | |_____^
[INFO] [stdout] ...
[INFO] [stdout] 236 |           consume!(self, Token::Semicolon);
[INFO] [stdout]     |           --------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/parser.rs:83:41
[INFO] [stdout]     |
[INFO] [stdout] 83  |       ($self:ident, $token_type:path) => {{
[INFO] [stdout]     |  _________________________________________^
[INFO] [stdout] 84  | |         let should_match = $self
[INFO] [stdout] 85  | |             .peek()
[INFO] [stdout] 86  | |             .ok_or(format!("EOF: Expected {} but got EOF", $token_type))?;
[INFO] [stdout] ...   |
[INFO] [stdout] 97  | |         }
[INFO] [stdout] 98  | |     }};
[INFO] [stdout]     | |_____^
[INFO] [stdout] ...
[INFO] [stdout] 249 |           consume!(self, Token::Semicolon);
[INFO] [stdout]     |           --------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/parser.rs:83:41
[INFO] [stdout]     |
[INFO] [stdout] 83  |       ($self:ident, $token_type:path) => {{
[INFO] [stdout]     |  _________________________________________^
[INFO] [stdout] 84  | |         let should_match = $self
[INFO] [stdout] 85  | |             .peek()
[INFO] [stdout] 86  | |             .ok_or(format!("EOF: Expected {} but got EOF", $token_type))?;
[INFO] [stdout] ...   |
[INFO] [stdout] 97  | |         }
[INFO] [stdout] 98  | |     }};
[INFO] [stdout]     | |_____^
[INFO] [stdout] ...
[INFO] [stdout] 261 |           consume!(self, Token::RightParen);
[INFO] [stdout]     |           ---------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.88s
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "10634e205a93d39649969d497055bf98368beeaf35966a4c7c78ccecd2fd1166", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "10634e205a93d39649969d497055bf98368beeaf35966a4c7c78ccecd2fd1166", kill_on_drop: false }`
[INFO] [stdout] 10634e205a93d39649969d497055bf98368beeaf35966a4c7c78ccecd2fd1166
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 09b1c0eec23e8445182617f799aacae0059d54ee6b5c66a8b9fdbf123a47c285
[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" "09b1c0eec23e8445182617f799aacae0059d54ee6b5c66a8b9fdbf123a47c285", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stdout] running 0 tests
[INFO] [stderr]    --> src/parser.rs:83:41
[INFO] [stdout] 
[INFO] [stderr]     |
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stderr] 83  |       ($self:ident, $token_type:path) => {{
[INFO] [stdout] 
[INFO] [stderr]     |  _________________________________________^
[INFO] [stderr] 84  | |         let should_match = $self
[INFO] [stderr] 85  | |             .peek()
[INFO] [stderr] 86  | |             .ok_or(format!("EOF: Expected {} but got EOF", $token_type))?;
[INFO] [stderr] ...   |
[INFO] [stderr] 97  | |         }
[INFO] [stderr] 98  | |     }};
[INFO] [stderr]     | |_____^
[INFO] [stderr] ...
[INFO] [stderr] 236 |           consume!(self, Token::Semicolon);
[INFO] [stderr]     |           --------------------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/parser.rs:83:41
[INFO] [stderr]     |
[INFO] [stderr] 83  |       ($self:ident, $token_type:path) => {{
[INFO] [stderr]     |  _________________________________________^
[INFO] [stderr] 84  | |         let should_match = $self
[INFO] [stderr] 85  | |             .peek()
[INFO] [stderr] 86  | |             .ok_or(format!("EOF: Expected {} but got EOF", $token_type))?;
[INFO] [stderr] ...   |
[INFO] [stderr] 97  | |         }
[INFO] [stderr] 98  | |     }};
[INFO] [stderr]     | |_____^
[INFO] [stderr] ...
[INFO] [stderr] 249 |           consume!(self, Token::Semicolon);
[INFO] [stderr]     |           --------------------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/parser.rs:83:41
[INFO] [stderr]     |
[INFO] [stderr] 83  |       ($self:ident, $token_type:path) => {{
[INFO] [stderr]     |  _________________________________________^
[INFO] [stderr] 84  | |         let should_match = $self
[INFO] [stderr] 85  | |             .peek()
[INFO] [stderr] 86  | |             .ok_or(format!("EOF: Expected {} but got EOF", $token_type))?;
[INFO] [stderr] ...   |
[INFO] [stderr] 97  | |         }
[INFO] [stderr] 98  | |     }};
[INFO] [stderr]     | |_____^
[INFO] [stderr] ...
[INFO] [stderr] 261 |           consume!(self, Token::RightParen);
[INFO] [stderr]     |           ---------------------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: 3 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/treelox-4d2cb445ea145e19
[INFO] running `Command { std: "docker" "inspect" "09b1c0eec23e8445182617f799aacae0059d54ee6b5c66a8b9fdbf123a47c285", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "09b1c0eec23e8445182617f799aacae0059d54ee6b5c66a8b9fdbf123a47c285", kill_on_drop: false }`
[INFO] [stdout] 09b1c0eec23e8445182617f799aacae0059d54ee6b5c66a8b9fdbf123a47c285