[INFO] fetching crate gll 0.0.2...
[INFO] checking gll-0.0.2 against try#cac44d9528e3bbbdaa1537d187bd489ccc5de18c for pr-91141
[INFO] extracting crate gll 0.0.2 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate gll 0.0.2 on toolchain cac44d9528e3bbbdaa1537d187bd489ccc5de18c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate gll 0.0.2
[INFO] finished tweaking crates.io crate gll 0.0.2
[INFO] tweaked toml for crates.io crate gll 0.0.2 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] efda1fdbb760c24aa98103d8c54d65dab9c14b7215b48802622761269e0dff93
[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" "efda1fdbb760c24aa98103d8c54d65dab9c14b7215b48802622761269e0dff93", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "efda1fdbb760c24aa98103d8c54d65dab9c14b7215b48802622761269e0dff93", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "efda1fdbb760c24aa98103d8c54d65dab9c14b7215b48802622761269e0dff93", kill_on_drop: false }`
[INFO] [stdout] efda1fdbb760c24aa98103d8c54d65dab9c14b7215b48802622761269e0dff93
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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=forbid" "-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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2986a3ad3fe4c06b71fecfa5f06123bb08697a650807d94979dcc5155e9e310f
[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" "2986a3ad3fe4c06b71fecfa5f06123bb08697a650807d94979dcc5155e9e310f", kill_on_drop: false }`
[INFO] [stderr]    Compiling indexing v0.3.2
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling gll v0.0.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]     --> src/generate/rust.rs:1477:21
[INFO] [stdout]      |
[INFO] [stdout] 1477 | /                     write!(
[INFO] [stdout] 1478 | |                         s,
[INFO] [stdout] 1479 | |                         "{} _{}: {} => {},",
[INFO] [stdout] 1480 | |                         i,
[INFO] [stdout] ...    |
[INFO] [stdout] 1483 | |                         rule.generate_traverse_shape(true, parse_nodes)
[INFO] [stdout] 1484 | |                     );
[INFO] [stdout]      | |_____________________^
[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 the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]     --> src/generate/rust.rs:1486:17
[INFO] [stdout]      |
[INFO] [stdout] 1486 |                 write!(s, " }}");
[INFO] [stdout]      |                 ^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]      = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/runtime.rs:425:43
[INFO] [stdout]     |
[INFO] [stdout] 425 |     pub fn dump_graphviz(&self, out: &mut Write) -> io::Result<()> {
[INFO] [stdout]     |                                           ^^^^^ help: use `dyn`: `dyn Write`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/runtime.rs:575:43
[INFO] [stdout]     |
[INFO] [stdout] 575 |     pub fn dump_graphviz(&self, out: &mut Write) -> io::Result<()> {
[INFO] [stdout]     |                                           ^^^^^ help: use `dyn`: `dyn Write`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/runtime.rs:425:43
[INFO] [stdout]     |
[INFO] [stdout] 425 |     pub fn dump_graphviz(&self, out: &mut Write) -> io::Result<()> {
[INFO] [stdout]     |                                           ^^^^^ help: use `dyn`: `dyn Write`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/runtime.rs:575:43
[INFO] [stdout]     |
[INFO] [stdout] 575 |     pub fn dump_graphviz(&self, out: &mut Write) -> io::Result<()> {
[INFO] [stdout]     |                                           ^^^^^ help: use `dyn`: `dyn Write`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]     --> src/generate/rust.rs:1477:21
[INFO] [stdout]      |
[INFO] [stdout] 1477 | /                     write!(
[INFO] [stdout] 1478 | |                         s,
[INFO] [stdout] 1479 | |                         "{} _{}: {} => {},",
[INFO] [stdout] 1480 | |                         i,
[INFO] [stdout] ...    |
[INFO] [stdout] 1483 | |                         rule.generate_traverse_shape(true, parse_nodes)
[INFO] [stdout] 1484 | |                     );
[INFO] [stdout]      | |_____________________^
[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 the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]     --> src/generate/rust.rs:1486:17
[INFO] [stdout]      |
[INFO] [stdout] 1486 |                 write!(s, " }}");
[INFO] [stdout]      |                 ^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]      = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]     --> src/generate/rust.rs:1477:21
[INFO] [stdout]      |
[INFO] [stdout] 1477 | /                     write!(
[INFO] [stdout] 1478 | |                         s,
[INFO] [stdout] 1479 | |                         "{} _{}: {} => {},",
[INFO] [stdout] 1480 | |                         i,
[INFO] [stdout] ...    |
[INFO] [stdout] 1483 | |                         rule.generate_traverse_shape(true, parse_nodes)
[INFO] [stdout] 1484 | |                     );
[INFO] [stdout]      | |_____________________^
[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 the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]     --> src/generate/rust.rs:1486:17
[INFO] [stdout]      |
[INFO] [stdout] 1486 |                 write!(s, " }}");
[INFO] [stdout]      |                 ^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]      = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 11.12s
[INFO] running `Command { std: "docker" "inspect" "2986a3ad3fe4c06b71fecfa5f06123bb08697a650807d94979dcc5155e9e310f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2986a3ad3fe4c06b71fecfa5f06123bb08697a650807d94979dcc5155e9e310f", kill_on_drop: false }`
[INFO] [stdout] 2986a3ad3fe4c06b71fecfa5f06123bb08697a650807d94979dcc5155e9e310f