[INFO] cloning repository https://github.com/LunarCoffee/Knot
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/LunarCoffee/Knot" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLunarCoffee%2FKnot", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLunarCoffee%2FKnot'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 93d4ba669af161d899e2c65b59b2607c95708e2e
[INFO] checking LunarCoffee/Knot against try#b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8 for pr-78363
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLunarCoffee%2FKnot" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/LunarCoffee/Knot 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/LunarCoffee/Knot
[INFO] finished tweaking git repo https://github.com/LunarCoffee/Knot
[INFO] tweaked toml for git repo https://github.com/LunarCoffee/Knot written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/LunarCoffee/Knot 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]  Downloading crates ...
[INFO] [stderr]   Downloaded num-complex v0.3.0
[INFO] [stderr]   Downloaded num v0.3.0
[INFO] [stderr]   Downloaded num-iter v0.1.41
[INFO] [stderr]   Downloaded num-rational v0.3.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] d4736e52a030328701b23e6a469c1de14376b4ccceb82f1853e1507ec0827d51
[INFO] running `Command { std: "docker" "start" "-a" "d4736e52a030328701b23e6a469c1de14376b4ccceb82f1853e1507ec0827d51", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d4736e52a030328701b23e6a469c1de14376b4ccceb82f1853e1507ec0827d51", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d4736e52a030328701b23e6a469c1de14376b4ccceb82f1853e1507ec0827d51", kill_on_drop: false }`
[INFO] [stdout] d4736e52a030328701b23e6a469c1de14376b4ccceb82f1853e1507ec0827d51
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] f4b78566b8a892d089db263f2db3be3ee67210377c666dd7df7ee77958c18af9
[INFO] running `Command { std: "docker" "start" "-a" "f4b78566b8a892d089db263f2db3be3ee67210377c666dd7df7ee77958c18af9", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling num-integer v0.1.43
[INFO] [stderr]    Compiling num-bigint v0.3.0
[INFO] [stderr]    Compiling num-rational v0.3.0
[INFO] [stderr]    Compiling num-iter v0.1.41
[INFO] [stderr]     Checking num-complex v0.3.0
[INFO] [stderr]     Checking num v0.3.0
[INFO] [stderr]     Checking knot v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: enum is never used: `Expression`
[INFO] [stdout]  --> src/lang/parser.rs:1:10
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub enum Expression {
[INFO] [stdout]   |          ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `spaces`
[INFO] [stdout]   --> src/parse/std_parsers.rs:47:8
[INFO] [stdout]    |
[INFO] [stdout] 47 | pub fn spaces() -> impl Parser<Output=()> {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `sign`
[INFO] [stdout]   --> src/parse/std_parsers.rs:53:8
[INFO] [stdout]    |
[INFO] [stdout] 53 | pub fn sign<I: Integer + Neg<Output=I>>() -> impl Parser<Output=fn(I) -> I> {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `decimal`
[INFO] [stdout]   --> src/parse/std_parsers.rs:96:8
[INFO] [stdout]    |
[INFO] [stdout] 96 | pub fn decimal<I: Integer + FromStr + Neg<Output=I>>() -> impl Parser<Output=I> {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `Expression`
[INFO] [stdout]  --> src/lang/parser.rs:1:10
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub enum Expression {
[INFO] [stdout]   |          ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `spaces`
[INFO] [stdout]   --> src/parse/std_parsers.rs:47:8
[INFO] [stdout]    |
[INFO] [stdout] 47 | pub fn spaces() -> impl Parser<Output=()> {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `sign`
[INFO] [stdout]   --> src/parse/std_parsers.rs:53:8
[INFO] [stdout]    |
[INFO] [stdout] 53 | pub fn sign<I: Integer + Neg<Output=I>>() -> impl Parser<Output=fn(I) -> I> {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `decimal`
[INFO] [stdout]   --> src/parse/std_parsers.rs:96:8
[INFO] [stdout]    |
[INFO] [stdout] 96 | pub fn decimal<I: Integer + FromStr + Neg<Output=I>>() -> impl Parser<Output=I> {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.86s
[INFO] running `Command { std: "docker" "inspect" "f4b78566b8a892d089db263f2db3be3ee67210377c666dd7df7ee77958c18af9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f4b78566b8a892d089db263f2db3be3ee67210377c666dd7df7ee77958c18af9", kill_on_drop: false }`
[INFO] [stdout] f4b78566b8a892d089db263f2db3be3ee67210377c666dd7df7ee77958c18af9