[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 master#a609fb45efad59dfd459c76e50899be9f0583b5a for pr-80579
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLunarCoffee%2FKnot" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/LunarCoffee/Knot on toolchain a609fb45efad59dfd459c76e50899be9f0583b5a
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "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-8/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" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b947d73ae71f7f530ac5c70861b3680cc5cea4e3b863569d65581705a8a49fe7
[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" "b947d73ae71f7f530ac5c70861b3680cc5cea4e3b863569d65581705a8a49fe7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b947d73ae71f7f530ac5c70861b3680cc5cea4e3b863569d65581705a8a49fe7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b947d73ae71f7f530ac5c70861b3680cc5cea4e3b863569d65581705a8a49fe7", kill_on_drop: false }`
[INFO] [stdout] b947d73ae71f7f530ac5c70861b3680cc5cea4e3b863569d65581705a8a49fe7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 95fe76ea32637fb64f8691313a0614a39ad04b5b003552193e1fe363d25f2232
[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" "95fe76ea32637fb64f8691313a0614a39ad04b5b003552193e1fe363d25f2232", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.0
[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-iter v0.1.41
[INFO] [stderr]    Compiling num-rational v0.3.0
[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 12.57s
[INFO] running `Command { std: "docker" "inspect" "95fe76ea32637fb64f8691313a0614a39ad04b5b003552193e1fe363d25f2232", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "95fe76ea32637fb64f8691313a0614a39ad04b5b003552193e1fe363d25f2232", kill_on_drop: false }`
[INFO] [stdout] 95fe76ea32637fb64f8691313a0614a39ad04b5b003552193e1fe363d25f2232