[INFO] cloning repository https://github.com/mathiasmagnusson/valiac
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mathiasmagnusson/valiac" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmathiasmagnusson%2Fvaliac", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmathiasmagnusson%2Fvaliac'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f95462b1a4d4485ba376575cf814135f3ec4b6a5
[INFO] checking mathiasmagnusson/valiac against master#a609fb45efad59dfd459c76e50899be9f0583b5a for pr-80579
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmathiasmagnusson%2Fvaliac" "/workspace/builds/worker-13/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-13/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mathiasmagnusson/valiac 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/mathiasmagnusson/valiac
[INFO] finished tweaking git repo https://github.com/mathiasmagnusson/valiac
[INFO] tweaked toml for git repo https://github.com/mathiasmagnusson/valiac written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate git repo https://github.com/mathiasmagnusson/valiac 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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] 7aaca428fa8d1cd9b11ece459a0d8b6eee9352d57bcab89e9aa2a7ac2dbd6717
[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" "7aaca428fa8d1cd9b11ece459a0d8b6eee9352d57bcab89e9aa2a7ac2dbd6717", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7aaca428fa8d1cd9b11ece459a0d8b6eee9352d57bcab89e9aa2a7ac2dbd6717", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7aaca428fa8d1cd9b11ece459a0d8b6eee9352d57bcab89e9aa2a7ac2dbd6717", kill_on_drop: false }`
[INFO] [stdout] 7aaca428fa8d1cd9b11ece459a0d8b6eee9352d57bcab89e9aa2a7ac2dbd6717
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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] a1fb439103865a1c576361cae7bf99e6f66bfb3e42a5ba20cba949cd43fa67fe
[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" "a1fb439103865a1c576361cae7bf99e6f66bfb3e42a5ba20cba949cd43fa67fe", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.34
[INFO] [stderr]    Compiling derive-getters v0.1.0
[INFO] [stderr]     Checking hel v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `prec_lvl`
[INFO] [stdout]    --> src/cst/parser.rs:224:31
[INFO] [stdout]     |
[INFO] [stdout] 224 |     fn parse_expr_(&mut self, prec_lvl: usize) -> Option<Expr> {
[INFO] [stdout]     |                               ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_prec_lvl`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]   --> src/types.rs:32:25
[INFO] [stdout]    |
[INFO] [stdout] 32 |             Type::Named(n) => unimplemented!(),
[INFO] [stdout]    |                         ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `prec_lvl`
[INFO] [stdout]    --> src/cst/parser.rs:224:31
[INFO] [stdout]     |
[INFO] [stdout] 224 |     fn parse_expr_(&mut self, prec_lvl: usize) -> Option<Expr> {
[INFO] [stdout]     |                               ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_prec_lvl`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]   --> src/types.rs:32:25
[INFO] [stdout]    |
[INFO] [stdout] 32 |             Type::Named(n) => unimplemented!(),
[INFO] [stdout]    |                         ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `POINTER_SIZE`
[INFO] [stdout]  --> src/types.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | const POINTER_SIZE: u8 = 8; // std::mem::size_of::<usize>() as u8;
[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: `size`
[INFO] [stdout]   --> src/types.rs:29:8
[INFO] [stdout]    |
[INFO] [stdout] 29 |     fn size(&self) -> u8 {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused attribute
[INFO] [stdout]  --> src/cst/operators.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![rustfmt::skip]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_attributes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `POINTER_SIZE`
[INFO] [stdout]  --> src/types.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | const POINTER_SIZE: u8 = 8; // std::mem::size_of::<usize>() as u8;
[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: `size`
[INFO] [stdout]   --> src/types.rs:29:8
[INFO] [stdout]    |
[INFO] [stdout] 29 |     fn size(&self) -> u8 {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused attribute
[INFO] [stdout]  --> src/cst/operators.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![rustfmt::skip]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_attributes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 10.30s
[INFO] running `Command { std: "docker" "inspect" "a1fb439103865a1c576361cae7bf99e6f66bfb3e42a5ba20cba949cd43fa67fe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a1fb439103865a1c576361cae7bf99e6f66bfb3e42a5ba20cba949cd43fa67fe", kill_on_drop: false }`
[INFO] [stdout] a1fb439103865a1c576361cae7bf99e6f66bfb3e42a5ba20cba949cd43fa67fe