[INFO] updating cached repository https://github.com/yui-knk/type_lang
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] ed69f34ad8701719671089770ae0063e4ac1aa6a
[INFO] testing yui-knk/type_lang against master#28742a1146f10a4f09369baad027a464acb7a766 for pr-71274
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyui-knk%2Ftype_lang" "/workspace/builds/worker-1/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/yui-knk/type_lang on toolchain 28742a1146f10a4f09369baad027a464acb7a766
[INFO] running `"/workspace/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/yui-knk/type_lang
[INFO] finished tweaking git repo https://github.com/yui-knk/type_lang
[INFO] tweaked toml for git repo https://github.com/yui-knk/type_lang written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/yui-knk/type_lang already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "/opt/rustwide/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "build" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 9a414672ae23ca40630d1c30dd8598711a780bd6bc6f87e598dcae15dbd78265
[INFO] running `"docker" "start" "-a" "9a414672ae23ca40630d1c30dd8598711a780bd6bc6f87e598dcae15dbd78265"`
[INFO] [stderr]    Compiling libc v0.2.43
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling proc-macro2 v0.4.26
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling cfg-if v0.1.6
[INFO] [stderr]    Compiling memchr v2.1.3
[INFO] [stderr]    Compiling lazy_static v1.2.0
[INFO] [stderr]    Compiling byteorder v1.3.1
[INFO] [stderr]    Compiling serde v1.0.85
[INFO] [stderr]    Compiling regex v1.1.0
[INFO] [stderr]    Compiling byte-tools v0.3.1
[INFO] [stderr]    Compiling ucd-util v0.1.3
[INFO] [stderr]    Compiling utf8-ranges v1.0.2
[INFO] [stderr]    Compiling fake-simd v0.1.2
[INFO] [stderr]    Compiling lalrpop-util v0.16.3
[INFO] [stderr]    Compiling unicode-width v0.1.5
[INFO] [stderr]    Compiling ansi_term v0.11.0
[INFO] [stderr]    Compiling bitflags v1.0.4
[INFO] [stderr]    Compiling vec_map v0.8.1
[INFO] [stderr]    Compiling rand_jitter v0.1.1
[INFO] [stderr]    Compiling itertools v0.8.0
[INFO] [stderr]    Compiling itertools v0.7.8
[INFO] [stderr]    Compiling log v0.4.6
[INFO] [stderr]    Compiling block-padding v0.1.3
[INFO] [stderr]    Compiling regex-syntax v0.6.5
[INFO] [stderr]    Compiling textwrap v0.10.0
[INFO] [stderr]    Compiling thread_local v0.3.6
[INFO] [stderr]    Compiling new_debug_unreachable v1.0.1
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling ena v0.11.0
[INFO] [stderr]    Compiling generic-array v0.12.0
[INFO] [stderr]    Compiling rand_os v0.1.2
[INFO] [stderr]    Compiling atty v0.2.11
[INFO] [stderr]    Compiling clap v2.32.0
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling digest v0.8.0
[INFO] [stderr]    Compiling block-buffer v0.7.2
[INFO] [stderr]    Compiling sha2 v0.8.0
[INFO] [stderr]    Compiling aho-corasick v0.6.9
[INFO] [stderr]    Compiling rand_pcg v0.1.1
[INFO] [stderr]    Compiling quote v0.6.11
[INFO] [stderr]    Compiling syn v0.15.26
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling phf_generator v0.7.24
[INFO] [stderr]    Compiling string_cache_codegen v0.4.2
[INFO] [stderr]    Compiling string_cache v0.7.3
[INFO] [stderr]    Compiling serde_derive v1.0.85
[INFO] [stderr]    Compiling docopt v1.0.2
[INFO] [stderr]    Compiling lalrpop v0.16.3
[INFO] [stderr]    Compiling type_lang v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> /opt/rustwide/target/debug/build/type_lang-5a1ed7aa0136c2a2/out/parser.rs:6382:5
[INFO] [stderr]      |
[INFO] [stderr] 6382 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[INFO] [stderr]      |
[INFO] [stderr]      = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> /opt/rustwide/target/debug/build/type_lang-5a1ed7aa0136c2a2/out/parser.rs:6393:5
[INFO] [stderr]      |
[INFO] [stderr] 6393 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/node.rs:242:36
[INFO] [stderr]     |
[INFO] [stderr] 242 | pub fn print_with_indent(buf: &mut Write, node: &Node, level: usize, space_count: usize) -> std::io::Result<()> {
[INFO] [stderr]     |                                    ^^^^^ help: use `dyn`: `dyn Write`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `ty`
[INFO] [stderr]    --> src/node.rs:255:36
[INFO] [stderr]     |
[INFO] [stderr] 255 |         Lambda(ref var, ref node1, ref ty) => {
[INFO] [stderr]     |                                    ^^^^^^ help: if this is intentional, prefix it with an underscore: `_ty`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `node1`
[INFO] [stderr]    --> src/node.rs:280:14
[INFO] [stderr]     |
[INFO] [stderr] 280 |         Succ(ref node1) => {
[INFO] [stderr]     |              ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_node1`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `node1`
[INFO] [stderr]    --> src/node.rs:284:14
[INFO] [stderr]     |
[INFO] [stderr] 284 |         Pred(ref node1) => {
[INFO] [stderr]     |              ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_node1`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `node1`
[INFO] [stderr]    --> src/node.rs:288:16
[INFO] [stderr]     |
[INFO] [stderr] 288 |         Iszero(ref node1) => {
[INFO] [stderr]     |                ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_node1`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `f`
[INFO] [stderr]    --> src/node.rs:292:16
[INFO] [stderr]     |
[INFO] [stderr] 292 |         Record(ref f) => {
[INFO] [stderr]     |                ^^^^^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `node1`
[INFO] [stderr]    --> src/node.rs:296:20
[INFO] [stderr]     |
[INFO] [stderr] 296 |         Projection(ref node1, ref label) => {
[INFO] [stderr]     |                    ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_node1`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `label`
[INFO] [stderr]    --> src/node.rs:296:31
[INFO] [stderr]     |
[INFO] [stderr] 296 |         Projection(ref node1, ref label) => {
[INFO] [stderr]     |                               ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_label`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `tag`
[INFO] [stderr]    --> src/node.rs:311:13
[INFO] [stderr]     |
[INFO] [stderr] 311 |         Tag(ref tag, ref node1, ref ty) => {
[INFO] [stderr]     |             ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_tag`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `node1`
[INFO] [stderr]    --> src/node.rs:311:22
[INFO] [stderr]     |
[INFO] [stderr] 311 |         Tag(ref tag, ref node1, ref ty) => {
[INFO] [stderr]     |                      ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_node1`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `ty`
[INFO] [stderr]    --> src/node.rs:311:33
[INFO] [stderr]     |
[INFO] [stderr] 311 |         Tag(ref tag, ref node1, ref ty) => {
[INFO] [stderr]     |                                 ^^^^^^ help: if this is intentional, prefix it with an underscore: `_ty`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `node1`
[INFO] [stderr]    --> src/node.rs:315:14
[INFO] [stderr]     |
[INFO] [stderr] 315 |         Case(ref node1, ref cases) => {
[INFO] [stderr]     |              ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_node1`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `cases`
[INFO] [stderr]    --> src/node.rs:315:25
[INFO] [stderr]     |
[INFO] [stderr] 315 |         Case(ref node1, ref cases) => {
[INFO] [stderr]     |                         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_cases`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `node1`
[INFO] [stderr]    --> src/node.rs:319:12
[INFO] [stderr]     |
[INFO] [stderr] 319 |         As(ref node1, ref ty) => {
[INFO] [stderr]     |            ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_node1`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `ty`
[INFO] [stderr]    --> src/node.rs:319:23
[INFO] [stderr]     |
[INFO] [stderr] 319 |         As(ref node1, ref ty) => {
[INFO] [stderr]     |                       ^^^^^^ help: if this is intentional, prefix it with an underscore: `_ty`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `node1`
[INFO] [stderr]    --> src/node.rs:323:13
[INFO] [stderr]     |
[INFO] [stderr] 323 |         Fix(ref node1) => {
[INFO] [stderr]     |             ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_node1`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `l`
[INFO] [stderr]    --> src/node.rs:343:13
[INFO] [stderr]     |
[INFO] [stderr] 343 |         Loc(ref l) => {
[INFO] [stderr]     |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_l`
[INFO] [stderr] 
[INFO] [stderr] warning: 19 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:29:9
[INFO] [stderr]    |
[INFO] [stderr] 29 |         print_with_indent(&mut io::stdout(), &result, 0, 2);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2m 22s
[INFO] running `"docker" "inspect" "9a414672ae23ca40630d1c30dd8598711a780bd6bc6f87e598dcae15dbd78265"`
[INFO] running `"docker" "rm" "-f" "9a414672ae23ca40630d1c30dd8598711a780bd6bc6f87e598dcae15dbd78265"`
[INFO] [stdout] 9a414672ae23ca40630d1c30dd8598711a780bd6bc6f87e598dcae15dbd78265
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "/opt/rustwide/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "test" "--frozen" "--no-run"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] b39aebe8a5d463cc721db65256f81b0d51ef68245bad255122405b0e6bf48fba
[INFO] running `"docker" "start" "-a" "b39aebe8a5d463cc721db65256f81b0d51ef68245bad255122405b0e6bf48fba"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling type_lang v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> /opt/rustwide/target/debug/build/type_lang-5a1ed7aa0136c2a2/out/parser.rs:6382:5
[INFO] [stderr]      |
[INFO] [stderr] 6382 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[INFO] [stderr]      |
[INFO] [stderr]      = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> /opt/rustwide/target/debug/build/type_lang-5a1ed7aa0136c2a2/out/parser.rs:6393:5
[INFO] [stderr]      |
[INFO] [stderr] 6393 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/node.rs:242:36
[INFO] [stderr]     |
[INFO] [stderr] 242 | pub fn print_with_indent(buf: &mut Write, node: &Node, level: usize, space_count: usize) -> std::io::Result<()> {
[INFO] [stderr]     |                                    ^^^^^ help: use `dyn`: `dyn Write`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `ty`
[INFO] [stderr]    --> src/node.rs:255:36
[INFO] [stderr]     |
[INFO] [stderr] 255 |         Lambda(ref var, ref node1, ref ty) => {
[INFO] [stderr]     |                                    ^^^^^^ help: if this is intentional, prefix it with an underscore: `_ty`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `node1`
[INFO] [stderr]    --> src/node.rs:280:14
[INFO] [stderr]     |
[INFO] [stderr] 280 |         Succ(ref node1) => {
[INFO] [stderr]     |              ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_node1`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `node1`
[INFO] [stderr]    --> src/node.rs:284:14
[INFO] [stderr]     |
[INFO] [stderr] 284 |         Pred(ref node1) => {
[INFO] [stderr]     |              ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_node1`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `node1`
[INFO] [stderr]    --> src/node.rs:288:16
[INFO] [stderr]     |
[INFO] [stderr] 288 |         Iszero(ref node1) => {
[INFO] [stderr]     |                ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_node1`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `f`
[INFO] [stderr]    --> src/node.rs:292:16
[INFO] [stderr]     |
[INFO] [stderr] 292 |         Record(ref f) => {
[INFO] [stderr]     |                ^^^^^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `node1`
[INFO] [stderr]    --> src/node.rs:296:20
[INFO] [stderr]     |
[INFO] [stderr] 296 |         Projection(ref node1, ref label) => {
[INFO] [stderr]     |                    ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_node1`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `label`
[INFO] [stderr]    --> src/node.rs:296:31
[INFO] [stderr]     |
[INFO] [stderr] 296 |         Projection(ref node1, ref label) => {
[INFO] [stderr]     |                               ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_label`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `tag`
[INFO] [stderr]    --> src/node.rs:311:13
[INFO] [stderr]     |
[INFO] [stderr] 311 |         Tag(ref tag, ref node1, ref ty) => {
[INFO] [stderr]     |             ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_tag`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `node1`
[INFO] [stderr]    --> src/node.rs:311:22
[INFO] [stderr]     |
[INFO] [stderr] 311 |         Tag(ref tag, ref node1, ref ty) => {
[INFO] [stderr]     |                      ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_node1`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `ty`
[INFO] [stderr]    --> src/node.rs:311:33
[INFO] [stderr]     |
[INFO] [stderr] 311 |         Tag(ref tag, ref node1, ref ty) => {
[INFO] [stderr]     |                                 ^^^^^^ help: if this is intentional, prefix it with an underscore: `_ty`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `node1`
[INFO] [stderr]    --> src/node.rs:315:14
[INFO] [stderr]     |
[INFO] [stderr] 315 |         Case(ref node1, ref cases) => {
[INFO] [stderr]     |              ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_node1`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `cases`
[INFO] [stderr]    --> src/node.rs:315:25
[INFO] [stderr]     |
[INFO] [stderr] 315 |         Case(ref node1, ref cases) => {
[INFO] [stderr]     |                         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_cases`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `node1`
[INFO] [stderr]    --> src/node.rs:319:12
[INFO] [stderr]     |
[INFO] [stderr] 319 |         As(ref node1, ref ty) => {
[INFO] [stderr]     |            ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_node1`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `ty`
[INFO] [stderr]    --> src/node.rs:319:23
[INFO] [stderr]     |
[INFO] [stderr] 319 |         As(ref node1, ref ty) => {
[INFO] [stderr]     |                       ^^^^^^ help: if this is intentional, prefix it with an underscore: `_ty`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `node1`
[INFO] [stderr]    --> src/node.rs:323:13
[INFO] [stderr]     |
[INFO] [stderr] 323 |         Fix(ref node1) => {
[INFO] [stderr]     |             ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_node1`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `l`
[INFO] [stderr]    --> src/node.rs:343:13
[INFO] [stderr]     |
[INFO] [stderr] 343 |         Loc(ref l) => {
[INFO] [stderr]     |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_l`
[INFO] [stderr] 
[INFO] [stderr] warning: 19 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:29:9
[INFO] [stderr]    |
[INFO] [stderr] 29 |         print_with_indent(&mut io::stdout(), &result, 0, 2);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> /opt/rustwide/target/debug/build/type_lang-5a1ed7aa0136c2a2/out/parser.rs:6382:5
[INFO] [stderr]      |
[INFO] [stderr] 6382 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[INFO] [stderr]      |
[INFO] [stderr]      = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> /opt/rustwide/target/debug/build/type_lang-5a1ed7aa0136c2a2/out/parser.rs:6393:5
[INFO] [stderr]      |
[INFO] [stderr] 6393 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> /opt/rustwide/target/debug/build/type_lang-5a1ed7aa0136c2a2/out/parser.rs:6382:5
[INFO] [stderr]      |
[INFO] [stderr] 6382 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/node.rs:242:36
[INFO] [stderr]     |
[INFO] [stderr] 242 | pub fn print_with_indent(buf: &mut Write, node: &Node, level: usize, space_count: usize) -> std::io::Result<()> {
[INFO] [stderr]     |                                    ^^^^^ help: use `dyn`: `dyn Write`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `ty`
[INFO] [stderr]    --> src/node.rs:255:36
[INFO] [stderr]     |
[INFO] [stderr] 255 |         Lambda(ref var, ref node1, ref ty) => {
[INFO] [stderr]     |                                    ^^^^^^ help: if this is intentional, prefix it with an underscore: `_ty`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `node1`
[INFO] [stderr]    --> src/node.rs:280:14
[INFO] [stderr]     |
[INFO] [stderr] 280 |         Succ(ref node1) => {
[INFO] [stderr]     |              ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_node1`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `node1`
[INFO] [stderr]    --> src/node.rs:284:14
[INFO] [stderr]     |
[INFO] [stderr] 284 |         Pred(ref node1) => {
[INFO] [stderr]     |              ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_node1`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `node1`
[INFO] [stderr]    --> src/node.rs:288:16
[INFO] [stderr]     |
[INFO] [stderr] 288 |         Iszero(ref node1) => {
[INFO] [stderr]     |                ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_node1`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `f`
[INFO] [stderr]    --> src/node.rs:292:16
[INFO] [stderr]     |
[INFO] [stderr] 292 |         Record(ref f) => {
[INFO] [stderr]     |                ^^^^^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `node1`
[INFO] [stderr]    --> src/node.rs:296:20
[INFO] [stderr]     |
[INFO] [stderr] 296 |         Projection(ref node1, ref label) => {
[INFO] [stderr]     |                    ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_node1`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `label`
[INFO] [stderr]    --> src/node.rs:296:31
[INFO] [stderr]     |
[INFO] [stderr] 296 |         Projection(ref node1, ref label) => {
[INFO] [stderr]     |                               ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_label`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `tag`
[INFO] [stderr]    --> src/node.rs:311:13
[INFO] [stderr]     |
[INFO] [stderr] 311 |         Tag(ref tag, ref node1, ref ty) => {
[INFO] [stderr]     |             ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_tag`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `node1`
[INFO] [stderr]    --> src/node.rs:311:22
[INFO] [stderr]     |
[INFO] [stderr] 311 |         Tag(ref tag, ref node1, ref ty) => {
[INFO] [stderr]     |                      ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_node1`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `ty`
[INFO] [stderr]    --> src/node.rs:311:33
[INFO] [stderr]     |
[INFO] [stderr] 311 |         Tag(ref tag, ref node1, ref ty) => {
[INFO] [stderr]     |                                 ^^^^^^ help: if this is intentional, prefix it with an underscore: `_ty`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `node1`
[INFO] [stderr]    --> src/node.rs:315:14
[INFO] [stderr]     |
[INFO] [stderr] 315 |         Case(ref node1, ref cases) => {
[INFO] [stderr]     |              ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_node1`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `cases`
[INFO] [stderr]    --> src/node.rs:315:25
[INFO] [stderr]     |
[INFO] [stderr] 315 |         Case(ref node1, ref cases) => {
[INFO] [stderr]     |                         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_cases`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `node1`
[INFO] [stderr]    --> src/node.rs:319:12
[INFO] [stderr]     |
[INFO] [stderr] 319 |         As(ref node1, ref ty) => {
[INFO] [stderr]     |            ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_node1`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `ty`
[INFO] [stderr]    --> src/node.rs:319:23
[INFO] [stderr]     |
[INFO] [stderr] 319 |         As(ref node1, ref ty) => {
[INFO] [stderr]     |                       ^^^^^^ help: if this is intentional, prefix it with an underscore: `_ty`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `node1`
[INFO] [stderr]    --> src/node.rs:323:13
[INFO] [stderr]     |
[INFO] [stderr] 323 |         Fix(ref node1) => {
[INFO] [stderr]     |             ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_node1`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `l`
[INFO] [stderr]    --> src/node.rs:343:13
[INFO] [stderr]     |
[INFO] [stderr] 343 |         Loc(ref l) => {
[INFO] [stderr]     |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_l`
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]     --> /opt/rustwide/target/debug/build/type_lang-5a1ed7aa0136c2a2/out/parser.rs:4450:9
[INFO] [stderr]      |
[INFO] [stderr] 4450 |         pub fn new() -> TypeParser {
[INFO] [stderr]      |         ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]      |
[INFO] [stderr]      = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]     --> /opt/rustwide/target/debug/build/type_lang-5a1ed7aa0136c2a2/out/parser.rs:4450:9
[INFO] [stderr]      |
[INFO] [stderr] 4450 |         pub fn new() -> TypeParser {
[INFO] [stderr]      |         ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 22 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 9.38s
[INFO] running `"docker" "inspect" "b39aebe8a5d463cc721db65256f81b0d51ef68245bad255122405b0e6bf48fba"`
[INFO] running `"docker" "rm" "-f" "b39aebe8a5d463cc721db65256f81b0d51ef68245bad255122405b0e6bf48fba"`
[INFO] [stdout] b39aebe8a5d463cc721db65256f81b0d51ef68245bad255122405b0e6bf48fba
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "/opt/rustwide/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "test" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 95ec70743ca5bf9ec8f92bad88eee5bd7a68030f91bc7c96b2c98c4c0bafaac4
[INFO] running `"docker" "start" "-a" "95ec70743ca5bf9ec8f92bad88eee5bd7a68030f91bc7c96b2c98c4c0bafaac4"`
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> /opt/rustwide/target/debug/build/type_lang-5a1ed7aa0136c2a2/out/parser.rs:6382:5
[INFO] [stderr]      |
[INFO] [stderr] 6382 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[INFO] [stderr]      |
[INFO] [stderr]      = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> /opt/rustwide/target/debug/build/type_lang-5a1ed7aa0136c2a2/out/parser.rs:6393:5
[INFO] [stderr]      |
[INFO] [stderr] 6393 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/node.rs:242:36
[INFO] [stderr]     |
[INFO] [stderr] 242 | pub fn print_with_indent(buf: &mut Write, node: &Node, level: usize, space_count: usize) -> std::io::Result<()> {
[INFO] [stderr]     |                                    ^^^^^ help: use `dyn`: `dyn Write`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `ty`
[INFO] [stderr]    --> src/node.rs:255:36
[INFO] [stderr]     |
[INFO] [stderr] 255 |         Lambda(ref var, ref node1, ref ty) => {
[INFO] [stderr]     |                                    ^^^^^^ help: if this is intentional, prefix it with an underscore: `_ty`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `node1`
[INFO] [stderr]    --> src/node.rs:280:14
[INFO] [stderr]     |
[INFO] [stderr] 280 |         Succ(ref node1) => {
[INFO] [stderr]     |              ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_node1`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `node1`
[INFO] [stderr]    --> src/node.rs:284:14
[INFO] [stderr]     |
[INFO] [stderr] 284 |         Pred(ref node1) => {
[INFO] [stderr]     |              ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_node1`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `node1`
[INFO] [stderr]    --> src/node.rs:288:16
[INFO] [stderr]     |
[INFO] [stderr] 288 |         Iszero(ref node1) => {
[INFO] [stderr]     |                ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_node1`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `f`
[INFO] [stderr]    --> src/node.rs:292:16
[INFO] [stderr]     |
[INFO] [stderr] 292 |         Record(ref f) => {
[INFO] [stderr]     |                ^^^^^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `node1`
[INFO] [stderr]    --> src/node.rs:296:20
[INFO] [stderr]     |
[INFO] [stderr] 296 |         Projection(ref node1, ref label) => {
[INFO] [stderr]     |                    ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_node1`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `label`
[INFO] [stderr]    --> src/node.rs:296:31
[INFO] [stderr]     |
[INFO] [stderr] 296 |         Projection(ref node1, ref label) => {
[INFO] [stderr]     |                               ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_label`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `tag`
[INFO] [stderr]    --> src/node.rs:311:13
[INFO] [stderr]     |
[INFO] [stderr] 311 |         Tag(ref tag, ref node1, ref ty) => {
[INFO] [stderr]     |             ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_tag`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `node1`
[INFO] [stderr]    --> src/node.rs:311:22
[INFO] [stderr]     |
[INFO] [stderr] 311 |         Tag(ref tag, ref node1, ref ty) => {
[INFO] [stderr]     |                      ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_node1`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `ty`
[INFO] [stderr]    --> src/node.rs:311:33
[INFO] [stderr]     |
[INFO] [stderr] 311 |         Tag(ref tag, ref node1, ref ty) => {
[INFO] [stderr]     |                                 ^^^^^^ help: if this is intentional, prefix it with an underscore: `_ty`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `node1`
[INFO] [stderr]    --> src/node.rs:315:14
[INFO] [stderr]     |
[INFO] [stderr] 315 |         Case(ref node1, ref cases) => {
[INFO] [stderr]     |              ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_node1`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `cases`
[INFO] [stderr]    --> src/node.rs:315:25
[INFO] [stderr]     |
[INFO] [stderr] 315 |         Case(ref node1, ref cases) => {
[INFO] [stderr]     |                         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_cases`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `node1`
[INFO] [stderr]    --> src/node.rs:319:12
[INFO] [stderr]     |
[INFO] [stderr] 319 |         As(ref node1, ref ty) => {
[INFO] [stderr]     |            ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_node1`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `ty`
[INFO] [stderr]    --> src/node.rs:319:23
[INFO] [stderr]     |
[INFO] [stderr] 319 |         As(ref node1, ref ty) => {
[INFO] [stderr]     |                       ^^^^^^ help: if this is intentional, prefix it with an underscore: `_ty`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `node1`
[INFO] [stderr]    --> src/node.rs:323:13
[INFO] [stderr]     |
[INFO] [stderr] 323 |         Fix(ref node1) => {
[INFO] [stderr]     |             ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_node1`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `l`
[INFO] [stderr]    --> src/node.rs:343:13
[INFO] [stderr]     |
[INFO] [stderr] 343 |         Loc(ref l) => {
[INFO] [stderr]     |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_l`
[INFO] [stderr] 
[INFO] [stderr] warning: 19 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> /opt/rustwide/target/debug/build/type_lang-5a1ed7aa0136c2a2/out/parser.rs:6382:5
[INFO] [stderr]      |
[INFO] [stderr] 6382 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[INFO] [stderr]      |
[INFO] [stderr]      = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> /opt/rustwide/target/debug/build/type_lang-5a1ed7aa0136c2a2/out/parser.rs:6393:5
[INFO] [stderr]      |
[INFO] [stderr] 6393 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> /opt/rustwide/target/debug/build/type_lang-5a1ed7aa0136c2a2/out/parser.rs:6382:5
[INFO] [stderr]      |
[INFO] [stderr] 6382 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/node.rs:242:36
[INFO] [stderr]     |
[INFO] [stderr] 242 | pub fn print_with_indent(buf: &mut Write, node: &Node, level: usize, space_count: usize) -> std::io::Result<()> {
[INFO] [stderr]     |                                    ^^^^^ help: use `dyn`: `dyn Write`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `ty`
[INFO] [stderr]    --> src/node.rs:255:36
[INFO] [stderr]     |
[INFO] [stderr] 255 |         Lambda(ref var, ref node1, ref ty) => {
[INFO] [stderr]     |                                    ^^^^^^ help: if this is intentional, prefix it with an underscore: `_ty`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `node1`
[INFO] [stderr]    --> src/node.rs:280:14
[INFO] [stderr]     |
[INFO] [stderr] 280 |         Succ(ref node1) => {
[INFO] [stderr]     |              ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_node1`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `node1`
[INFO] [stderr]    --> src/node.rs:284:14
[INFO] [stderr]     |
[INFO] [stderr] 284 |         Pred(ref node1) => {
[INFO] [stderr]     |              ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_node1`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `node1`
[INFO] [stderr]    --> src/node.rs:288:16
[INFO] [stderr]     |
[INFO] [stderr] 288 |         Iszero(ref node1) => {
[INFO] [stderr]     |                ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_node1`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `f`
[INFO] [stderr]    --> src/node.rs:292:16
[INFO] [stderr]     |
[INFO] [stderr] 292 |         Record(ref f) => {
[INFO] [stderr]     |                ^^^^^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `node1`
[INFO] [stderr]    --> src/node.rs:296:20
[INFO] [stderr]     |
[INFO] [stderr] 296 |         Projection(ref node1, ref label) => {
[INFO] [stderr]     |                    ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_node1`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `label`
[INFO] [stderr]    --> src/node.rs:296:31
[INFO] [stderr]     |
[INFO] [stderr] 296 |         Projection(ref node1, ref label) => {
[INFO] [stderr]     |                               ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_label`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `tag`
[INFO] [stderr]    --> src/node.rs:311:13
[INFO] [stderr]     |
[INFO] [stderr] 311 |         Tag(ref tag, ref node1, ref ty) => {
[INFO] [stderr]     |             ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_tag`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `node1`
[INFO] [stderr]    --> src/node.rs:311:22
[INFO] [stderr]     |
[INFO] [stderr] 311 |         Tag(ref tag, ref node1, ref ty) => {
[INFO] [stderr]     |                      ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_node1`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `ty`
[INFO] [stderr]    --> src/node.rs:311:33
[INFO] [stderr]     |
[INFO] [stderr] 311 |         Tag(ref tag, ref node1, ref ty) => {
[INFO] [stderr]     |                                 ^^^^^^ help: if this is intentional, prefix it with an underscore: `_ty`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `node1`
[INFO] [stderr]    --> src/node.rs:315:14
[INFO] [stderr]     |
[INFO] [stderr] 315 |         Case(ref node1, ref cases) => {
[INFO] [stderr]     |              ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_node1`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `cases`
[INFO] [stderr]    --> src/node.rs:315:25
[INFO] [stderr]     |
[INFO] [stderr] 315 |         Case(ref node1, ref cases) => {
[INFO] [stderr]     |                         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_cases`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `node1`
[INFO] [stderr]    --> src/node.rs:319:12
[INFO] [stderr]     |
[INFO] [stderr] 319 |         As(ref node1, ref ty) => {
[INFO] [stderr]     |            ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_node1`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `ty`
[INFO] [stderr]    --> src/node.rs:319:23
[INFO] [stderr]     |
[INFO] [stderr] 319 |         As(ref node1, ref ty) => {
[INFO] [stderr]     |                       ^^^^^^ help: if this is intentional, prefix it with an underscore: `_ty`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `node1`
[INFO] [stderr]    --> src/node.rs:323:13
[INFO] [stderr]     |
[INFO] [stderr] 323 |         Fix(ref node1) => {
[INFO] [stderr]     |             ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_node1`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `l`
[INFO] [stderr]    --> src/node.rs:343:13
[INFO] [stderr]     |
[INFO] [stderr] 343 |         Loc(ref l) => {
[INFO] [stderr]     |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_l`
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]     --> /opt/rustwide/target/debug/build/type_lang-5a1ed7aa0136c2a2/out/parser.rs:4450:9
[INFO] [stderr]      |
[INFO] [stderr] 4450 |         pub fn new() -> TypeParser {
[INFO] [stderr]      |         ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]      |
[INFO] [stderr]      = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]     --> /opt/rustwide/target/debug/build/type_lang-5a1ed7aa0136c2a2/out/parser.rs:4450:9
[INFO] [stderr]      |
[INFO] [stderr] 4450 |         pub fn new() -> TypeParser {
[INFO] [stderr]      |         ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 22 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:29:9
[INFO] [stderr]    |
[INFO] [stderr] 29 |         print_with_indent(&mut io::stdout(), &result, 0, 2);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.41s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/type_lang-a74d6cf58aa46a7e
[INFO] [stdout] 
[INFO] [stdout] running 109 tests
[INFO] [stdout] test eval::tests::test_eval_appy1 ... ok
[INFO] [stdout] test eval::tests::test_eval_appy2 ... ok
[INFO] [stdout] test eval::tests::test_eval_appy3 ... ok
[INFO] [stdout] test eval::tests::test_eval_appy4 ... ok
[INFO] [stdout] test eval::tests::test_eval_as ... ok
[INFO] [stdout] test eval::tests::test_eval_appy5 ... ok
[INFO] [stdout] test eval::tests::test_eval_assign ... ok
[INFO] [stdout] test eval::tests::test_eval_false ... ok
[INFO] [stdout] test eval::tests::test_eval_appy7 ... ok
[INFO] [stdout] test eval::tests::test_eval_iszero ... ok
[INFO] [stdout] test eval::tests::test_eval_let ... ok
[INFO] [stdout] test eval::tests::test_eval_deref ... ok
[INFO] [stdout] test eval::tests::test_eval_if ... ok
[INFO] [stdout] test eval::tests::test_eval_associativity ... ok
[INFO] [stdout] test eval::tests::test_eval_appy6 ... ok
[INFO] [stdout] test eval::tests::test_eval_fix2 ... ok
[INFO] [stdout] test eval::tests::test_eval_letrec2 ... ok
[INFO] [stdout] test eval::tests::test_eval_projection_apply ... ok
[INFO] [stdout] test eval::tests::test_eval_fix3 ... ok
[INFO] [stdout] test eval::tests::test_eval_pred ... ok
[INFO] [stdout] test eval::tests::test_eval_ref ... ok
[INFO] [stdout] test eval::tests::test_eval_nat ... ok
[INFO] [stdout] test eval::tests_env::test_find_by_variable ... ok
[INFO] [stdout] test eval::tests::test_eval_fix1 ... ok
[INFO] [stdout] test eval::tests::test_eval_case ... ok
[INFO] [stdout] test eval::tests::test_eval_unitt ... ok
[INFO] [stdout] test eval::tests::test_eval_succ ... ok
[INFO] [stdout] test eval::tests::test_eval_true ... ok
[INFO] [stdout] test eval::tests::test_eval_letrec1 ... ok
[INFO] [stdout] test eval::tests::test_eval_unit ... ok
[INFO] [stdout] test eval::tests::test_eval_lambda ... ok
[INFO] [stdout] test eval::tests::test_eval_letrec3 ... ok
[INFO] [stdout] test eval::tests::test_eval_variant ... ok
[INFO] [stdout] test eval::tests::test_eval_record ... ok
[INFO] [stdout] test parser_test::tests::test_parse_assign ... ok
[INFO] [stdout] test parser_test::tests::test_parse_apply ... ok
[INFO] [stdout] test parser_test::tests::test_parse_deref ... ok
[INFO] [stdout] test parser_test::tests::test_parse_as ... ok
[INFO] [stdout] test parser_test::tests::test_parse_case ... ok
[INFO] [stdout] test eval::tests::test_eval_unit_derived_form ... ok
[INFO] [stdout] test parser_test::tests::test_parse_false ... ok
[INFO] [stdout] test parser_test::tests::test_parse_if ... ok
[INFO] [stdout] test parser_test::tests::test_parse_iszero ... ok
[INFO] [stdout] test parser_test::tests::test_parse_lambda ... ok
[INFO] [stdout] test parser_test::tests::test_parse_nat ... ok
[INFO] [stdout] test parser_test::tests::test_parse_apply_2 ... ok
[INFO] [stdout] test eval::tests::test_eval_succ_pred ... ok
[INFO] [stdout] test parser_test::tests::test_parse_let ... ok
[INFO] [stdout] test parser_test::tests::test_parse_pred ... ok
[INFO] [stdout] test parser_test::tests::test_parse_projection2 ... ok
[INFO] [stdout] test parser_test::tests::test_parse_record_type ... ok
[INFO] [stdout] test parser_test::tests::test_parse_lambda_nested_arrow_type ... ok
[INFO] [stdout] test parser_test::tests::test_parse_true ... ok
[INFO] [stdout] test eval::tests::test_eval_projection ... ok
[INFO] [stdout] test parser_test::tests::test_parse_ref ... ok
[INFO] [stdout] test parser_test::tests::test_parse_top_type ... ok
[INFO] [stdout] test ty::tests::test_record_type_equality ... ok
[INFO] [stdout] test parser_test::tests::test_parse_tag1 ... ok
[INFO] [stdout] test parser_test::tests::test_parse_succ ... ok
[INFO] [stdout] test parser_test::tests::test_parse_lambda_not_arrow_type ... ok
[INFO] [stdout] test parser_test::tests::test_parse_true_false ... ok
[INFO] [stdout] test parser_test::tests::test_parse_unit_derived_form ... ok
[INFO] [stdout] test parser_test::tests::test_parse_unit_type ... ok
[INFO] [stdout] test parser_test::tests::test_parse_record ... ok
[INFO] [stdout] test parser_test::tests::test_parse_projection ... ok
[INFO] [stdout] test parser_test::tests::test_parse_fix ... ok
[INFO] [stdout] test parser_test::tests::test_parse_var_ref ... ok
[INFO] [stdout] test parser_test::tests::test_parse_tag2 ... ok
[INFO] [stdout] test type_check::tests::test_check_apply1 ... ok
[INFO] [stdout] test parser_test::tests::test_parse_record_arrow_type ... ok
[INFO] [stdout] test parser_test::tests::test_parse_variant_type ... ok
[INFO] [stdout] test type_check::tests::test_check_apply7 ... ok
[INFO] [stdout] test type_check::tests::test_check_apply4 ... ok
[INFO] [stdout] test type_check::tests::test_check_apply2 ... ok
[INFO] [stdout] test type_check::tests::test_check_apply5 ... ok
[INFO] [stdout] test type_check::tests::test_check_apply3 ... ok
[INFO] [stdout] test type_check::tests::test_check_bool ... ok
[INFO] [stdout] test type_check::tests::test_check_pred ... ok
[INFO] [stdout] test type_check::tests::test_check_apply6 ... ok
[INFO] [stdout] test type_check::tests::test_check_record ... ok
[INFO] [stdout] test type_check::tests::test_check_unit ... ok
[INFO] [stdout] test type_check::tests::test_check_lambda ... ok
[INFO] [stdout] test type_check::tests_env::test_find_by_variable ... ok
[INFO] [stdout] test type_check::tests::test_check_nat ... ok
[INFO] [stdout] test type_check::tests::test_check_type_mismatch ... ok
[INFO] [stdout] test type_check::tests_subtype_eq::test_subtype_eq_arrow ... ok
[INFO] [stdout] test type_check::tests_subtype_eq::test_subtype_eq_record ... ok
[INFO] [stdout] test type_check::tests::test_check_ref ... ok
[INFO] [stdout] test type_check::tests_type_eq::test_type_eq_arrow ... ok
[INFO] [stdout] test type_check::tests_subtype_eq::test_subtype_eq_top ... ok
[INFO] [stdout] test type_check::tests_type_eq::test_type_eq_bool ... ok
[INFO] [stdout] test type_check::tests_type_eq::test_type_eq_record ... ok
[INFO] [stdout] test type_check::tests_type_eq::test_type_eq_ref ... ok
[INFO] [stdout] test type_check::tests_type_eq::test_type_eq_top ... ok
[INFO] [stdout] test type_check::tests_type_eq::test_type_eq_unit ... ok
[INFO] [stdout] test type_check::tests_type_eq::test_type_eq_nat ... ok
[INFO] [stdout] test type_check::tests_type_eq::test_type_eq_variant ... ok
[INFO] [stdout] test type_check::tests::test_check_assign ... ok
[INFO] [stdout] test type_check::tests::test_check_iszero ... ok
[INFO] [stdout] test type_check::tests::test_check_deref ... ok
[INFO] [stdout] test type_check::tests::test_check_succ ... ok
[INFO] [stdout] test type_check::tests::test_check_let ... ok
[INFO] [stdout] test type_check::tests::test_check_variable_not_found ... ok
[INFO] [stdout] test type_check::tests::test_check_fix ... ok
[INFO] [stdout] test type_check::tests::test_check_if_then_else ... ok
[INFO] [stdout] test type_check::tests::test_check_as ... ok
[INFO] [stdout] test type_check::tests::test_check_variant ... ok
[INFO] [stdout] test type_check::tests::test_check_projection ... ok
[INFO] [stdout] test type_check::tests::test_check_case ... ok
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/type_lang-30be79609c7fdba3
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests type_lang
[INFO] [stdout] test result: ok. 109 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "95ec70743ca5bf9ec8f92bad88eee5bd7a68030f91bc7c96b2c98c4c0bafaac4"`
[INFO] running `"docker" "rm" "-f" "95ec70743ca5bf9ec8f92bad88eee5bd7a68030f91bc7c96b2c98c4c0bafaac4"`
[INFO] [stdout] 95ec70743ca5bf9ec8f92bad88eee5bd7a68030f91bc7c96b2c98c4c0bafaac4