[INFO] fetching crate hindley-milner 0.1.0...
[INFO] checking hindley-milner-0.1.0 against try#3bb2879ea9e58d65b875f9a98df44f4a43ce2597 for pr-85387
[INFO] extracting crate hindley-milner 0.1.0 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate hindley-milner 0.1.0 on toolchain 3bb2879ea9e58d65b875f9a98df44f4a43ce2597
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3bb2879ea9e58d65b875f9a98df44f4a43ce2597" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate hindley-milner 0.1.0
[INFO] finished tweaking crates.io crate hindley-milner 0.1.0
[INFO] tweaked toml for crates.io crate hindley-milner 0.1.0 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3bb2879ea9e58d65b875f9a98df44f4a43ce2597" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3bb2879ea9e58d65b875f9a98df44f4a43ce2597" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded maplit v0.1.6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+3bb2879ea9e58d65b875f9a98df44f4a43ce2597" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ba3098043806cd70b8940914f02e5418ffd93e87381380d76719b714635133b5
[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" "ba3098043806cd70b8940914f02e5418ffd93e87381380d76719b714635133b5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ba3098043806cd70b8940914f02e5418ffd93e87381380d76719b714635133b5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ba3098043806cd70b8940914f02e5418ffd93e87381380d76719b714635133b5", kill_on_drop: false }`
[INFO] [stdout] ba3098043806cd70b8940914f02e5418ffd93e87381380d76719b714635133b5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+3bb2879ea9e58d65b875f9a98df44f4a43ce2597" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ac510da7c51bd65e8ccc29a659c594e23bcb719f2e7d781ce8f23dc2b3154940
[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" "ac510da7c51bd65e8ccc29a659c594e23bcb719f2e7d781ce8f23dc2b3154940", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking maplit v0.1.6
[INFO] [stderr]     Checking lazy_static v0.2.11
[INFO] [stderr]     Checking hindley-milner v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]    --> src/lib.rs:206:1
[INFO] [stdout]     |
[INFO] [stdout] 206 | / lazy_static! {
[INFO] [stdout] 207 | |     // Basic integer
[INFO] [stdout] 208 | |     static ref INTEGER: Type = Type::new_operator(0, "int", &[]);
[INFO] [stdout] 209 | |     // Basic bool
[INFO] [stdout] 210 | |     static ref BOOL: Type = Type::new_operator(1, "bool", &[]);
[INFO] [stdout] 211 | | }
[INFO] [stdout]     | |_^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout]     = note: this warning originates in the macro `__lazy_static_create` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]    --> src/lib.rs:206:1
[INFO] [stdout]     |
[INFO] [stdout] 206 | / lazy_static! {
[INFO] [stdout] 207 | |     // Basic integer
[INFO] [stdout] 208 | |     static ref INTEGER: Type = Type::new_operator(0, "int", &[]);
[INFO] [stdout] 209 | |     // Basic bool
[INFO] [stdout] 210 | |     static ref BOOL: Type = Type::new_operator(1, "bool", &[]);
[INFO] [stdout] 211 | | }
[INFO] [stdout]     | |_^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `__lazy_static_create` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]    --> src/lib.rs:206:1
[INFO] [stdout]     |
[INFO] [stdout] 206 | / lazy_static! {
[INFO] [stdout] 207 | |     // Basic integer
[INFO] [stdout] 208 | |     static ref INTEGER: Type = Type::new_operator(0, "int", &[]);
[INFO] [stdout] 209 | |     // Basic bool
[INFO] [stdout] 210 | |     static ref BOOL: Type = Type::new_operator(1, "bool", &[]);
[INFO] [stdout] 211 | | }
[INFO] [stdout]     | |_^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout]     = note: this warning originates in the macro `__lazy_static_create` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]    --> src/lib.rs:206:1
[INFO] [stdout]     |
[INFO] [stdout] 206 | / lazy_static! {
[INFO] [stdout] 207 | |     // Basic integer
[INFO] [stdout] 208 | |     static ref INTEGER: Type = Type::new_operator(0, "int", &[]);
[INFO] [stdout] 209 | |     // Basic bool
[INFO] [stdout] 210 | |     static ref BOOL: Type = Type::new_operator(1, "bool", &[]);
[INFO] [stdout] 211 | | }
[INFO] [stdout]     | |_^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `__lazy_static_create` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Namer`
[INFO] [stdout]   --> src/lib.rs:77:8
[INFO] [stdout]    |
[INFO] [stdout] 77 | struct Namer {
[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: `next`
[INFO] [stdout]   --> src/lib.rs:83:8
[INFO] [stdout]    |
[INFO] [stdout] 83 |     fn next(&mut self) -> String {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `name`
[INFO] [stdout]   --> src/lib.rs:89:8
[INFO] [stdout]    |
[INFO] [stdout] 89 |     fn name(&mut self, t: ArenaType) -> String {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `id`
[INFO] [stdout]    --> src/lib.rs:124:8
[INFO] [stdout]     |
[INFO] [stdout] 124 |     fn id(&self) -> usize {
[INFO] [stdout]     |        ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `as_string`
[INFO] [stdout]    --> src/lib.rs:146:8
[INFO] [stdout]     |
[INFO] [stdout] 146 |     fn as_string(&self, a: &Vec<Type>, namer: &mut Namer) -> String {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test_env`
[INFO] [stdout]    --> src/lib.rs:537:4
[INFO] [stdout]     |
[INFO] [stdout] 537 | fn test_env() -> (Vec<Type>, Env) {
[INFO] [stdout]     |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.52s
[INFO] running `Command { std: "docker" "inspect" "ac510da7c51bd65e8ccc29a659c594e23bcb719f2e7d781ce8f23dc2b3154940", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ac510da7c51bd65e8ccc29a659c594e23bcb719f2e7d781ce8f23dc2b3154940", kill_on_drop: false }`
[INFO] [stdout] ac510da7c51bd65e8ccc29a659c594e23bcb719f2e7d781ce8f23dc2b3154940