[INFO] cloning repository https://github.com/gefjon/gender-lang
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/gefjon/gender-lang" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgefjon%2Fgender-lang", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgefjon%2Fgender-lang'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 665d7e9aaddfa9b898846af1edb48b5591764ae3
[INFO] checking gefjon/gender-lang against try#4a23c45c7893f1416456144e3883cc48ea91722e for pr-82322
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgefjon%2Fgender-lang" "/workspace/builds/worker-9/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/gefjon/gender-lang on toolchain 4a23c45c7893f1416456144e3883cc48ea91722e
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4a23c45c7893f1416456144e3883cc48ea91722e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/gefjon/gender-lang
[INFO] finished tweaking git repo https://github.com/gefjon/gender-lang
[INFO] tweaked toml for git repo https://github.com/gefjon/gender-lang written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/gefjon/gender-lang already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4a23c45c7893f1416456144e3883cc48ea91722e" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[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" "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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+4a23c45c7893f1416456144e3883cc48ea91722e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8abf7a23d67084cb73ff0546b769d4918e75d0c3ee2d5963371774623793efc7
[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" "8abf7a23d67084cb73ff0546b769d4918e75d0c3ee2d5963371774623793efc7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8abf7a23d67084cb73ff0546b769d4918e75d0c3ee2d5963371774623793efc7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8abf7a23d67084cb73ff0546b769d4918e75d0c3ee2d5963371774623793efc7", kill_on_drop: false }`
[INFO] [stdout] 8abf7a23d67084cb73ff0546b769d4918e75d0c3ee2d5963371774623793efc7
[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" "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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+4a23c45c7893f1416456144e3883cc48ea91722e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 55e81ab97b7a64e2e4bbc78af813dff5221959d8723944b61ef875dfa8c5e88c
[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" "55e81ab97b7a64e2e4bbc78af813dff5221959d8723944b61ef875dfa8c5e88c", kill_on_drop: false }`
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[INFO] [stderr]    Compiling libc v0.2.54
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling memchr v2.2.0
[INFO] [stderr]    Compiling byteorder v1.3.1
[INFO] [stderr]    Compiling typenum v1.10.0
[INFO] [stderr]    Compiling lazy_static v1.3.0
[INFO] [stderr]    Compiling cfg-if v0.1.9
[INFO] [stderr]    Compiling precomputed-hash v0.1.1
[INFO] [stderr]    Compiling opaque-debug v0.2.2
[INFO] [stderr]    Compiling strsim v0.9.2
[INFO] [stderr]    Compiling new_debug_unreachable v1.0.3
[INFO] [stderr]    Compiling either v1.5.2
[INFO] [stderr]    Compiling ordermap v0.3.5
[INFO] [stderr]    Compiling bit-vec v0.5.1
[INFO] [stderr]    Compiling lalrpop-util v0.17.0
[INFO] [stderr]    Compiling diff v0.1.11
[INFO] [stderr]    Compiling rand_core v0.3.1
[INFO] [stderr]    Compiling rand_jitter v0.1.4
[INFO] [stderr]    Compiling regex-syntax v0.6.6
[INFO] [stderr]    Compiling block-padding v0.1.4
[INFO] [stderr]    Compiling log v0.4.6
[INFO] [stderr]    Compiling itertools v0.8.0
[INFO] [stderr]    Compiling thread_local v0.3.6
[INFO] [stderr]    Compiling bit-set v0.5.1
[INFO] [stderr]    Compiling rand_xorshift v0.1.1
[INFO] [stderr]    Compiling rand_isaac v0.1.1
[INFO] [stderr]    Compiling rand_hc v0.1.0
[INFO] [stderr]    Compiling petgraph v0.4.13
[INFO] [stderr]    Compiling ena v0.13.0
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]     Checking aho-corasick v0.7.3
[INFO] [stderr]    Compiling rand_os v0.1.3
[INFO] [stderr]    Compiling dirs v1.0.5
[INFO] [stderr]    Compiling atty v0.2.11
[INFO] [stderr]    Compiling quote v0.6.12
[INFO] [stderr]    Compiling syn v0.15.34
[INFO] [stderr]    Compiling term v0.5.2
[INFO] [stderr]    Compiling generic-array v0.12.0
[INFO] [stderr]    Compiling digest v0.8.0
[INFO] [stderr]    Compiling block-buffer v0.7.3
[INFO] [stderr]    Compiling ascii-canvas v2.0.0
[INFO] [stderr]    Compiling sha2 v0.8.0
[INFO] [stderr]    Compiling phf_generator v0.7.24
[INFO] [stderr]    Compiling string_cache_codegen v0.4.2
[INFO] [stderr]    Compiling regex v1.1.6
[INFO] [stderr]    Compiling string_cache v0.7.3
[INFO] [stderr]    Compiling serde_derive v1.0.91
[INFO] [stderr]    Compiling serde v1.0.91
[INFO] [stderr]    Compiling docopt v1.1.0
[INFO] [stderr]    Compiling lalrpop v0.17.0
[INFO] [stderr]    Compiling gender-lang v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> /opt/rustwide/target/debug/build/gender-lang-864d14fe80307053/out/grammar.rs:1137:5
[INFO] [stdout]      |
[INFO] [stdout] 1137 |     (__0)
[INFO] [stdout]      |     ^^^^^ help: remove these parentheses
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> /opt/rustwide/target/debug/build/gender-lang-864d14fe80307053/out/grammar.rs:1181:5
[INFO] [stdout]      |
[INFO] [stdout] 1181 |     (__0)
[INFO] [stdout]      |     ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> /opt/rustwide/target/debug/build/gender-lang-864d14fe80307053/out/grammar.rs:1192:5
[INFO] [stdout]      |
[INFO] [stdout] 1192 |     (__0)
[INFO] [stdout]      |     ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> /opt/rustwide/target/debug/build/gender-lang-864d14fe80307053/out/grammar.rs:1203:5
[INFO] [stdout]      |
[INFO] [stdout] 1203 |     (__0)
[INFO] [stdout]      |     ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> /opt/rustwide/target/debug/build/gender-lang-864d14fe80307053/out/grammar.rs:1315:5
[INFO] [stdout]      |
[INFO] [stdout] 1315 |     (__0)
[INFO] [stdout]      |     ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> /opt/rustwide/target/debug/build/gender-lang-864d14fe80307053/out/grammar.rs:1137:5
[INFO] [stdout]      |
[INFO] [stdout] 1137 |     (__0)
[INFO] [stdout]      |     ^^^^^ help: remove these parentheses
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> /opt/rustwide/target/debug/build/gender-lang-864d14fe80307053/out/grammar.rs:1181:5
[INFO] [stdout]      |
[INFO] [stdout] 1181 |     (__0)
[INFO] [stdout]      |     ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> /opt/rustwide/target/debug/build/gender-lang-864d14fe80307053/out/grammar.rs:1192:5
[INFO] [stdout]      |
[INFO] [stdout] 1192 |     (__0)
[INFO] [stdout]      |     ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> /opt/rustwide/target/debug/build/gender-lang-864d14fe80307053/out/grammar.rs:1203:5
[INFO] [stdout]      |
[INFO] [stdout] 1203 |     (__0)
[INFO] [stdout]      |     ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> /opt/rustwide/target/debug/build/gender-lang-864d14fe80307053/out/grammar.rs:1315:5
[INFO] [stdout]      |
[INFO] [stdout] 1315 |     (__0)
[INFO] [stdout]      |     ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used in a function that returns `Result` or `Option` (or another type that implements `FromResidual`)
[INFO] [stdout]   --> src/lib.rs:92:18
[INFO] [stdout]    |
[INFO] [stdout] 88 | / pub fn dynamic_call<'thread>(
[INFO] [stdout] 89 | |     obj: Object<'thread>,
[INFO] [stdout] 90 | |     method: &'thread str,
[INFO] [stdout] 91 | | ) -> err::Result<Object<'thread>> {
[INFO] [stdout] 92 | |     let method = obj.gender.methods.get(method)?;
[INFO] [stdout]    | |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ cannot use the `?` operator in a function that returns `std::result::Result<Object<'_>, err::Error>`
[INFO] [stdout] 93 | |     let res = method.invoke_on(obj);
[INFO] [stdout] 94 | |     Ok(res)
[INFO] [stdout] 95 | | }
[INFO] [stdout]    | |_- this function should return `Result` or `Option` to accept `?`
[INFO] [stdout]    |
[INFO] [stdout]    = help: the trait `FromResidual<Option<!>>` is not implemented for `std::result::Result<Object<'_>, err::Error>`
[INFO] [stdout]    = note: required by `from_residual`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used in a function that returns `Result` or `Option` (or another type that implements `FromResidual`)
[INFO] [stdout]   --> src/lib.rs:92:18
[INFO] [stdout]    |
[INFO] [stdout] 88 | / pub fn dynamic_call<'thread>(
[INFO] [stdout] 89 | |     obj: Object<'thread>,
[INFO] [stdout] 90 | |     method: &'thread str,
[INFO] [stdout] 91 | | ) -> err::Result<Object<'thread>> {
[INFO] [stdout] 92 | |     let method = obj.gender.methods.get(method)?;
[INFO] [stdout]    | |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ cannot use the `?` operator in a function that returns `std::result::Result<Object<'_>, err::Error>`
[INFO] [stdout] 93 | |     let res = method.invoke_on(obj);
[INFO] [stdout] 94 | |     Ok(res)
[INFO] [stdout] 95 | | }
[INFO] [stdout]    | |_- this function should return `Result` or `Option` to accept `?`
[INFO] [stdout]    |
[INFO] [stdout]    = help: the trait `FromResidual<Option<!>>` is not implemented for `std::result::Result<Object<'_>, err::Error>`
[INFO] [stdout]    = note: required by `from_residual`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used in a method that returns `Result` or `Option` (or another type that implements `FromResidual`)
[INFO] [stdout]    --> src/lib.rs:176:21
[INFO] [stdout]     |
[INFO] [stdout] 158 | /     pub fn eval(&mut self, expr: Expr) -> err::Result<Object<'a>> {
[INFO] [stdout] 159 | |         match expr {
[INFO] [stdout] 160 | |             Expr::Number(n) => Ok(Object::number(n)),
[INFO] [stdout] 161 | |             Expr::Boolean(b) => Ok(Object::boolean(b)),
[INFO] [stdout] ...   |
[INFO] [stdout] 176 | |                     pred_result.try_extract_bool()?
[INFO] [stdout]     | |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ cannot use the `?` operator in a method that returns `std::result::Result<Object<'_>, err::Error>`
[INFO] [stdout] ...   |
[INFO] [stdout] 207 | |         }
[INFO] [stdout] 208 | |     }
[INFO] [stdout]     | |_____- this function should return `Result` or `Option` to accept `?`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `FromResidual<Option<!>>` is not implemented for `std::result::Result<Object<'_>, err::Error>`
[INFO] [stdout]     = note: required by `from_residual`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used in a method that returns `Result` or `Option` (or another type that implements `FromResidual`)
[INFO] [stdout]    --> src/lib.rs:176:21
[INFO] [stdout]     |
[INFO] [stdout] 158 | /     pub fn eval(&mut self, expr: Expr) -> err::Result<Object<'a>> {
[INFO] [stdout] 159 | |         match expr {
[INFO] [stdout] 160 | |             Expr::Number(n) => Ok(Object::number(n)),
[INFO] [stdout] 161 | |             Expr::Boolean(b) => Ok(Object::boolean(b)),
[INFO] [stdout] ...   |
[INFO] [stdout] 176 | |                     pred_result.try_extract_bool()?
[INFO] [stdout]     | |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ cannot use the `?` operator in a method that returns `std::result::Result<Object<'_>, err::Error>`
[INFO] [stdout] ...   |
[INFO] [stdout] 207 | |         }
[INFO] [stdout] 208 | |     }
[INFO] [stdout]     | |_____- this function should return `Result` or `Option` to accept `?`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `FromResidual<Option<!>>` is not implemented for `std::result::Result<Object<'_>, err::Error>`
[INFO] [stdout]     = note: required by `from_residual`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors; 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `gender-lang`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: aborting due to 2 previous errors; 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "55e81ab97b7a64e2e4bbc78af813dff5221959d8723944b61ef875dfa8c5e88c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "55e81ab97b7a64e2e4bbc78af813dff5221959d8723944b61ef875dfa8c5e88c", kill_on_drop: false }`
[INFO] [stdout] 55e81ab97b7a64e2e4bbc78af813dff5221959d8723944b61ef875dfa8c5e88c