[INFO] crate hindley-milner 0.1.0 is already in cache
[INFO] checking hindley-milner-0.1.0 against try#5fdfba63a96c5e8ae0ebf6b8b66853110277087d for pr-73166
[INFO] extracting crate hindley-milner 0.1.0 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate hindley-milner 0.1.0 on toolchain 5fdfba63a96c5e8ae0ebf6b8b66853110277087d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5fdfba63a96c5e8ae0ebf6b8b66853110277087d" "read-manifest" "--manifest-path" "Cargo.toml", 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-9/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5fdfba63a96c5e8ae0ebf6b8b66853110277087d" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5fdfba63a96c5e8ae0ebf6b8b66853110277087d" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+5fdfba63a96c5e8ae0ebf6b8b66853110277087d" "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] 8dd39057c4a8e8f6a3d1c5d4839873b0c8764e3bd3deef35382fa118c7e45862
[INFO] running `Command { std: "docker" "start" "-a" "8dd39057c4a8e8f6a3d1c5d4839873b0c8764e3bd3deef35382fa118c7e45862", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8dd39057c4a8e8f6a3d1c5d4839873b0c8764e3bd3deef35382fa118c7e45862", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8dd39057c4a8e8f6a3d1c5d4839873b0c8764e3bd3deef35382fa118c7e45862", kill_on_drop: false }`
[INFO] [stdout] 8dd39057c4a8e8f6a3d1c5d4839873b0c8764e3bd3deef35382fa118c7e45862
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+5fdfba63a96c5e8ae0ebf6b8b66853110277087d" "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] 85003c978af83a6f741df2cdedc1afc72a033611a3fd162999ee0d0a478717fa
[INFO] running `Command { std: "docker" "start" "-a" "85003c978af83a6f741df2cdedc1afc72a033611a3fd162999ee0d0a478717fa", kill_on_drop: false }`
[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 item '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 a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item '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 a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item '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 a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item '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 a macro (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 0.78s
[INFO] running `Command { std: "docker" "inspect" "85003c978af83a6f741df2cdedc1afc72a033611a3fd162999ee0d0a478717fa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "85003c978af83a6f741df2cdedc1afc72a033611a3fd162999ee0d0a478717fa", kill_on_drop: false }`
[INFO] [stdout] 85003c978af83a6f741df2cdedc1afc72a033611a3fd162999ee0d0a478717fa