[INFO] cloning repository https://github.com/chryslovelace/mixfix
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/chryslovelace/mixfix" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchryslovelace%2Fmixfix", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchryslovelace%2Fmixfix'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f87cad659c2c22f8fba54e2198bc83e8fc047956
[INFO] checking chryslovelace/mixfix against try#b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8 for pr-78363
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchryslovelace%2Fmixfix" "/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/chryslovelace/mixfix on toolchain b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/chryslovelace/mixfix
[INFO] finished tweaking git repo https://github.com/chryslovelace/mixfix
[INFO] tweaked toml for git repo https://github.com/chryslovelace/mixfix written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/chryslovelace/mixfix already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8" "fetch" "--locked" "--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-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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 83527fb557efde14fc9e85869c9d804b5404cbeb06b01ce90e59f42c1da85b7b
[INFO] running `Command { std: "docker" "start" "-a" "83527fb557efde14fc9e85869c9d804b5404cbeb06b01ce90e59f42c1da85b7b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "83527fb557efde14fc9e85869c9d804b5404cbeb06b01ce90e59f42c1da85b7b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "83527fb557efde14fc9e85869c9d804b5404cbeb06b01ce90e59f42c1da85b7b", kill_on_drop: false }`
[INFO] [stdout] 83527fb557efde14fc9e85869c9d804b5404cbeb06b01ce90e59f42c1da85b7b
[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=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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] beb66cb913f0124245c2b8a69bcf08cef96c756d9ccafae7810eaa8601ce3ba2
[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" "beb66cb913f0124245c2b8a69bcf08cef96c756d9ccafae7810eaa8601ce3ba2", kill_on_drop: false }`
[INFO] [stderr]     Checking either v1.5.0
[INFO] [stderr]     Checking fixedbitset v0.1.9
[INFO] [stderr]     Checking petgraph v0.4.13
[INFO] [stderr]     Checking itertools v0.8.0
[INFO] [stderr]     Checking mixfix v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `NamePart`
[INFO] [stdout]  --> src/parser.rs:6:16
[INFO] [stdout]   |
[INFO] [stdout] 6 | use operator::{NamePart, Operator};
[INFO] [stdout]   |                ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/parser.rs:31:21
[INFO] [stdout]    |
[INFO] [stdout] 31 | impl<O> Parser for &Parser<O = O> {
[INFO] [stdout]    |                     ^^^^^^^^^^^^^ help: use `dyn`: `dyn Parser<O = O>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/parser.rs:180:17
[INFO] [stdout]     |
[INFO] [stdout] 180 |         Opts::<&Parser<O = Expr>>(vec![
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Parser<O = Expr>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `NamePart`
[INFO] [stdout]  --> src/parser.rs:6:16
[INFO] [stdout]   |
[INFO] [stdout] 6 | use operator::{NamePart, Operator};
[INFO] [stdout]   |                ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/parser.rs:31:21
[INFO] [stdout]    |
[INFO] [stdout] 31 | impl<O> Parser for &Parser<O = O> {
[INFO] [stdout]    |                     ^^^^^^^^^^^^^ help: use `dyn`: `dyn Parser<O = O>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/parser.rs:180:17
[INFO] [stdout]     |
[INFO] [stdout] 180 |         Opts::<&Parser<O = Expr>>(vec![
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Parser<O = Expr>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `well_formed`
[INFO] [stdout]   --> src/expr.rs:14:12
[INFO] [stdout]    |
[INFO] [stdout] 14 |     pub fn well_formed(&self) -> bool {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `arity`
[INFO] [stdout]   --> src/operator.rs:15:12
[INFO] [stdout]    |
[INFO] [stdout] 15 |     pub fn arity(&self) -> usize {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `UnparsedInput`
[INFO] [stdout]   --> src/parser.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 |     UnparsedInput(ParseInput<'a>),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `parse_expr`
[INFO] [stdout]    --> src/parser.rs:330:8
[INFO] [stdout]     |
[INFO] [stdout] 330 | pub fn parse_expr<'i, G: PrecedenceGraph>(
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.09s
[INFO] running `Command { std: "docker" "inspect" "beb66cb913f0124245c2b8a69bcf08cef96c756d9ccafae7810eaa8601ce3ba2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "beb66cb913f0124245c2b8a69bcf08cef96c756d9ccafae7810eaa8601ce3ba2", kill_on_drop: false }`
[INFO] [stdout] beb66cb913f0124245c2b8a69bcf08cef96c756d9ccafae7810eaa8601ce3ba2