[INFO] cloning repository https://github.com/fmonniot/zelkova-lang
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/fmonniot/zelkova-lang" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffmonniot%2Fzelkova-lang", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffmonniot%2Fzelkova-lang'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7b6c8457c93783a7f9e26da13a13feff8ab914c1
[INFO] checking fmonniot/zelkova-lang against try#f47dd4da3ae8c32c9e65d307bfe640b143e674df for pr-77526
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffmonniot%2Fzelkova-lang" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/fmonniot/zelkova-lang on toolchain f47dd4da3ae8c32c9e65d307bfe640b143e674df
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/fmonniot/zelkova-lang
[INFO] finished tweaking git repo https://github.com/fmonniot/zelkova-lang
[INFO] tweaked toml for git repo https://github.com/fmonniot/zelkova-lang written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/fmonniot/zelkova-lang already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded indoc v1.0.2
[INFO] [stderr]   Downloaded codespan-reporting v0.9.5
[INFO] [stderr]   Downloaded codespan v0.9.5
[INFO] [stderr]   Downloaded unindent v0.1.6
[INFO] [stderr]   Downloaded libc v0.2.74
[INFO] [stderr]   Downloaded unic-ucd-category v0.9.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] df9c6287e3196fcd7a1269f33b4bd34697132f126c84fe54a5291996a858ed9a
[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" "df9c6287e3196fcd7a1269f33b4bd34697132f126c84fe54a5291996a858ed9a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "df9c6287e3196fcd7a1269f33b4bd34697132f126c84fe54a5291996a858ed9a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "df9c6287e3196fcd7a1269f33b4bd34697132f126c84fe54a5291996a858ed9a", kill_on_drop: false }`
[INFO] [stdout] df9c6287e3196fcd7a1269f33b4bd34697132f126c84fe54a5291996a858ed9a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 00ca0fab65c23a862b14e7aaccdc3fa42f731c8b38cd89436906fa83b009bf3b
[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" "00ca0fab65c23a862b14e7aaccdc3fa42f731c8b38cd89436906fa83b009bf3b", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.74
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling syn v1.0.38
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling siphasher v0.3.3
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling either v1.6.0
[INFO] [stderr]    Compiling fixedbitset v0.2.0
[INFO] [stderr]    Compiling lalrpop-util v0.19.0
[INFO] [stderr]    Compiling unindent v0.1.6
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]     Checking codespan-reporting v0.9.5
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]     Checking log v0.4.11
[INFO] [stderr]     Checking unic-ucd-category v0.9.0
[INFO] [stderr]    Compiling itertools v0.9.0
[INFO] [stderr]    Compiling phf_shared v0.8.0
[INFO] [stderr]     Checking regex v1.3.9
[INFO] [stderr]    Compiling indoc v1.0.2
[INFO] [stderr]    Compiling aho-corasick v0.7.13
[INFO] [stderr]    Compiling ena v0.14.0
[INFO] [stderr]    Compiling hashbrown v0.8.2
[INFO] [stderr]    Compiling indexmap v1.5.1
[INFO] [stderr]     Checking codespan v0.9.5
[INFO] [stderr]    Compiling block-buffer v0.7.3
[INFO] [stderr]    Compiling sha2 v0.8.2
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]    Compiling dirs v1.0.5
[INFO] [stderr]     Checking env_logger v0.7.1
[INFO] [stderr]    Compiling term v0.5.2
[INFO] [stderr]    Compiling petgraph v0.5.1
[INFO] [stderr]    Compiling ascii-canvas v2.0.0
[INFO] [stderr]    Compiling serde_derive v1.0.115
[INFO] [stderr]    Compiling serde v1.0.115
[INFO] [stderr]    Compiling docopt v1.1.0
[INFO] [stderr]    Compiling string_cache v0.8.0
[INFO] [stderr]    Compiling lalrpop v0.19.0
[INFO] [stderr]    Compiling zelkova-lang v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `codespan_reporting::files::SimpleFile`
[INFO] [stdout]   --> src/compiler/mod.rs:25:5
[INFO] [stdout]    |
[INFO] [stdout] 25 | use codespan_reporting::files::SimpleFile;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `codespan_reporting::diagnostic::Diagnostic`
[INFO] [stdout]  --> src/compiler/source_files.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use codespan_reporting::diagnostic::Diagnostic;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `codespan_reporting::files::SimpleFile`
[INFO] [stdout]   --> src/compiler/mod.rs:25:5
[INFO] [stdout]    |
[INFO] [stdout] 25 | use codespan_reporting::files::SimpleFile;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `codespan_reporting::diagnostic::Diagnostic`
[INFO] [stdout]  --> src/compiler/source_files.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use codespan_reporting::diagnostic::Diagnostic;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]    --> src/compiler/mod.rs:109:13
[INFO] [stdout]     |
[INFO] [stdout] 109 |     fn from(err: canonical::Error) -> Self {
[INFO] [stdout]     |             ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]    --> src/compiler/mod.rs:115:13
[INFO] [stdout]     |
[INFO] [stdout] 115 |     fn from(err: typer::Error) -> Self {
[INFO] [stdout]     |             ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]    --> src/compiler/mod.rs:121:13
[INFO] [stdout]     |
[INFO] [stdout] 121 |     fn from(err: exhaustiveness::Error) -> Self {
[INFO] [stdout]     |             ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `package`
[INFO] [stdout]   --> src/compiler/canonical.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 |     package: PackageName,
[INFO] [stdout]    |     ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_package`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `interfaces`
[INFO] [stdout]   --> src/compiler/canonical.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 |     interfaces: HashMap<ModuleName, Interface>,
[INFO] [stdout]    |     ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_interfaces`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `source`
[INFO] [stdout]   --> src/compiler/canonical.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 19 |     source: source::Module,
[INFO] [stdout]    |     ^^^^^^ help: if this is intentional, prefix it with an underscore: `_source`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `module`
[INFO] [stdout]  --> src/compiler/exhaustiveness.rs:6:14
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn check(module: &Module) -> Result<(), Error> {
[INFO] [stdout]   |              ^^^^^^ help: if this is intentional, prefix it with an underscore: `_module`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `module`
[INFO] [stdout]   --> src/compiler/typer/mod.rs:42:19
[INFO] [stdout]    |
[INFO] [stdout] 42 | pub fn type_check(module: &Module) -> Result<(), Error> {
[INFO] [stdout]    |                   ^^^^^^ help: if this is intentional, prefix it with an underscore: `_module`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]    --> src/compiler/mod.rs:109:13
[INFO] [stdout]     |
[INFO] [stdout] 109 |     fn from(err: canonical::Error) -> Self {
[INFO] [stdout]     |             ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]    --> src/compiler/mod.rs:115:13
[INFO] [stdout]     |
[INFO] [stdout] 115 |     fn from(err: typer::Error) -> Self {
[INFO] [stdout]     |             ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]    --> src/compiler/mod.rs:121:13
[INFO] [stdout]     |
[INFO] [stdout] 121 |     fn from(err: exhaustiveness::Error) -> Self {
[INFO] [stdout]     |             ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `package`
[INFO] [stdout]   --> src/compiler/canonical.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 |     package: PackageName,
[INFO] [stdout]    |     ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_package`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `interfaces`
[INFO] [stdout]   --> src/compiler/canonical.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 |     interfaces: HashMap<ModuleName, Interface>,
[INFO] [stdout]    |     ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_interfaces`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `source`
[INFO] [stdout]   --> src/compiler/canonical.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 19 |     source: source::Module,
[INFO] [stdout]    |     ^^^^^^ help: if this is intentional, prefix it with an underscore: `_source`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `module`
[INFO] [stdout]  --> src/compiler/exhaustiveness.rs:6:14
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn check(module: &Module) -> Result<(), Error> {
[INFO] [stdout]   |              ^^^^^^ help: if this is intentional, prefix it with an underscore: `_module`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `module`
[INFO] [stdout]   --> src/compiler/typer/mod.rs:42:19
[INFO] [stdout]    |
[INFO] [stdout] 42 | pub fn type_check(module: &Module) -> Result<(), Error> {
[INFO] [stdout]    |                   ^^^^^^ help: if this is intentional, prefix it with an underscore: `_module`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `indentation`
[INFO] [stdout]    --> src/compiler/source/tokenizer.rs:223:5
[INFO] [stdout]     |
[INFO] [stdout] 223 |     indentation: usize,
[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: `is_type`
[INFO] [stdout]   --> src/compiler/source/mod.rs:51:8
[INFO] [stdout]    |
[INFO] [stdout] 51 |     fn is_type(&self) -> bool {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_qualified`
[INFO] [stdout]   --> src/compiler/source/mod.rs:67:8
[INFO] [stdout]    |
[INFO] [stdout] 67 |     fn is_qualified(&self) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `package`
[INFO] [stdout]   --> src/compiler/mod.rs:65:5
[INFO] [stdout]    |
[INFO] [stdout] 65 |     package: PackageName,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `values`
[INFO] [stdout]   --> src/compiler/mod.rs:66:5
[INFO] [stdout]    |
[INFO] [stdout] 66 |     values: HashMap<source::Name, source::Type>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `types`
[INFO] [stdout]   --> src/compiler/mod.rs:67:5
[INFO] [stdout]    |
[INFO] [stdout] 67 |     types: HashMap<source::Name, source::UnionType>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `infixes`
[INFO] [stdout]   --> src/compiler/mod.rs:70:5
[INFO] [stdout]    |
[INFO] [stdout] 70 |     infixes: HashMap<source::Name, source::Infix>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 17 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `indentation`
[INFO] [stdout]    --> src/compiler/source/tokenizer.rs:223:5
[INFO] [stdout]     |
[INFO] [stdout] 223 |     indentation: usize,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `package`
[INFO] [stdout]   --> src/compiler/mod.rs:65:5
[INFO] [stdout]    |
[INFO] [stdout] 65 |     package: PackageName,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `values`
[INFO] [stdout]   --> src/compiler/mod.rs:66:5
[INFO] [stdout]    |
[INFO] [stdout] 66 |     values: HashMap<source::Name, source::Type>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `types`
[INFO] [stdout]   --> src/compiler/mod.rs:67:5
[INFO] [stdout]    |
[INFO] [stdout] 67 |     types: HashMap<source::Name, source::UnionType>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `infixes`
[INFO] [stdout]   --> src/compiler/mod.rs:70:5
[INFO] [stdout]    |
[INFO] [stdout] 70 |     infixes: HashMap<source::Name, source::Infix>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 15 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2m 06s
[INFO] running `Command { std: "docker" "inspect" "00ca0fab65c23a862b14e7aaccdc3fa42f731c8b38cd89436906fa83b009bf3b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "00ca0fab65c23a862b14e7aaccdc3fa42f731c8b38cd89436906fa83b009bf3b", kill_on_drop: false }`
[INFO] [stdout] 00ca0fab65c23a862b14e7aaccdc3fa42f731c8b38cd89436906fa83b009bf3b