[INFO] cloning repository https://github.com/takagiy/hminfer
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/takagiy/hminfer" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftakagiy%2Fhminfer", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftakagiy%2Fhminfer'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 83242bb58cbb09bcd8e4679907f35ffe32b83ea7
[INFO] checking takagiy/hminfer against try#63132bd615c9bf75e93af8405d00064212331708 for pr-153975
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftakagiy%2Fhminfer" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/takagiy/hminfer
[INFO] finished tweaking git repo https://github.com/takagiy/hminfer
[INFO] tweaked toml for git repo https://github.com/takagiy/hminfer written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/takagiy/hminfer on toolchain 63132bd615c9bf75e93af8405d00064212331708
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+63132bd615c9bf75e93af8405d00064212331708" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/takagiy/hminfer already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+63132bd615c9bf75e93af8405d00064212331708" "fetch" "--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-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+63132bd615c9bf75e93af8405d00064212331708" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f32d53bfb9563983ab178fb44a09a7b6df73f5691837d1dec823dc87fd10f888
[INFO] running `Command { std: "docker" "start" "-a" "f32d53bfb9563983ab178fb44a09a7b6df73f5691837d1dec823dc87fd10f888", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f32d53bfb9563983ab178fb44a09a7b6df73f5691837d1dec823dc87fd10f888", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f32d53bfb9563983ab178fb44a09a7b6df73f5691837d1dec823dc87fd10f888", kill_on_drop: false }`
[INFO] [stdout] f32d53bfb9563983ab178fb44a09a7b6df73f5691837d1dec823dc87fd10f888
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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" "RUSTDOCFLAGS=--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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+63132bd615c9bf75e93af8405d00064212331708" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6e16292b1b8caf807ee0a1195af655dd64442b2845beb3b899ff1f90742c997e
[INFO] running `Command { std: "docker" "start" "-a" "6e16292b1b8caf807ee0a1195af655dd64442b2845beb3b899ff1f90742c997e", kill_on_drop: false }`
[INFO] [stderr]     Checking either v1.8.1
[INFO] [stderr]     Checking typed-arena v2.0.2
[INFO] [stderr]     Checking itertools v0.10.5
[INFO] [stderr]     Checking hminfer v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `level`
[INFO] [stdout]    --> src/main.rs:289:9
[INFO] [stdout]     |
[INFO] [stdout] 289 |         level: usize,
[INFO] [stdout]     |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_level`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ctx`
[INFO] [stdout]    --> src/main.rs:290:9
[INFO] [stdout]     |
[INFO] [stdout] 290 |         ctx: &'a InferContext<'a>,
[INFO] [stdout]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_ctx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `context`
[INFO] [stdout]    --> src/main.rs:291:9
[INFO] [stdout]     |
[INFO] [stdout] 291 |         context: &mut HashMap<usize, &'a Type<'a>>,
[INFO] [stdout]     |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_context`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: eliding a lifetime that's named elsewhere is confusing
[INFO] [stdout]    --> src/main.rs:296:34
[INFO] [stdout]     |
[INFO] [stdout] 296 |     pub fn base_var(&'a self) -> &RefCell<RowVar<'a>> {
[INFO] [stdout]     |                      --          ^^^^^^^^^^^^^^^^--^^
[INFO] [stdout]     |                      |           |               |
[INFO] [stdout]     |                      |           |               the same lifetime is named here
[INFO] [stdout]     |                      |           the same lifetime is elided here
[INFO] [stdout]     |                      the lifetime is named here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 296 |     pub fn base_var(&'a self) -> &'a RefCell<RowVar<'a>> {
[INFO] [stdout]     |                                   ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `level`
[INFO] [stdout]    --> src/main.rs:289:9
[INFO] [stdout]     |
[INFO] [stdout] 289 |         level: usize,
[INFO] [stdout]     |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_level`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ctx`
[INFO] [stdout]    --> src/main.rs:290:9
[INFO] [stdout]     |
[INFO] [stdout] 290 |         ctx: &'a InferContext<'a>,
[INFO] [stdout]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_ctx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `context`
[INFO] [stdout]    --> src/main.rs:291:9
[INFO] [stdout]     |
[INFO] [stdout] 291 |         context: &mut HashMap<usize, &'a Type<'a>>,
[INFO] [stdout]     |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_context`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: eliding a lifetime that's named elsewhere is confusing
[INFO] [stdout]    --> src/main.rs:296:34
[INFO] [stdout]     |
[INFO] [stdout] 296 |     pub fn base_var(&'a self) -> &RefCell<RowVar<'a>> {
[INFO] [stdout]     |                      --          ^^^^^^^^^^^^^^^^--^^
[INFO] [stdout]     |                      |           |               |
[INFO] [stdout]     |                      |           |               the same lifetime is named here
[INFO] [stdout]     |                      |           the same lifetime is elided here
[INFO] [stdout]     |                      the lifetime is named here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 296 |     pub fn base_var(&'a self) -> &'a RefCell<RowVar<'a>> {
[INFO] [stdout]     |                                   ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.64s
[INFO] running `Command { std: "docker" "inspect" "6e16292b1b8caf807ee0a1195af655dd64442b2845beb3b899ff1f90742c997e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6e16292b1b8caf807ee0a1195af655dd64442b2845beb3b899ff1f90742c997e", kill_on_drop: false }`
[INFO] [stdout] 6e16292b1b8caf807ee0a1195af655dd64442b2845beb3b899ff1f90742c997e
