[INFO] fetching crate autour_core 0.1.12...
[INFO] checking autour_core-0.1.12 against master#8a65ee08296b36342bf7c3cdc15312ccbc357227 for pr-142704
[INFO] extracting crate autour_core 0.1.12 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate autour_core 0.1.12 on toolchain 8a65ee08296b36342bf7c3cdc15312ccbc357227
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8a65ee08296b36342bf7c3cdc15312ccbc357227" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate autour_core 0.1.12
[INFO] finished tweaking crates.io crate autour_core 0.1.12
[INFO] tweaked toml for crates.io crate autour_core 0.1.12 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8a65ee08296b36342bf7c3cdc15312ccbc357227" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 20 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8a65ee08296b36342bf7c3cdc15312ccbc357227" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded graphviz_dot_builder v0.1.5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8a65ee08296b36342bf7c3cdc15312ccbc357227" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 73522451f31b62cd79a1bb0da4e2440e3943b0bb7a54f7d7c9bf646c9833363f
[INFO] running `Command { std: "docker" "start" "-a" "73522451f31b62cd79a1bb0da4e2440e3943b0bb7a54f7d7c9bf646c9833363f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "73522451f31b62cd79a1bb0da4e2440e3943b0bb7a54f7d7c9bf646c9833363f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "73522451f31b62cd79a1bb0da4e2440e3943b0bb7a54f7d7c9bf646c9833363f", kill_on_drop: false }`
[INFO] [stdout] 73522451f31b62cd79a1bb0da4e2440e3943b0bb7a54f7d7c9bf646c9833363f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8a65ee08296b36342bf7c3cdc15312ccbc357227" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2fcac74da79425f386ba2c77c8689fd517e2cfa107a8a640c8d692cac8cd27c6
[INFO] running `Command { std: "docker" "start" "-a" "2fcac74da79425f386ba2c77c8689fd517e2cfa107a8a640c8d692cac8cd27c6", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.5.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.95
[INFO] [stderr]    Compiling unicode-ident v1.0.18
[INFO] [stderr]    Compiling rustversion v1.0.21
[INFO] [stderr]    Compiling heck v0.5.0
[INFO] [stderr]     Checking strum v0.27.1
[INFO] [stderr]     Checking either v1.15.0
[INFO] [stderr]     Checking maplit v1.0.2
[INFO] [stderr]     Checking itertools v0.14.0
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling quote v1.0.40
[INFO] [stderr]    Compiling syn v2.0.103
[INFO] [stderr]     Checking num-integer v0.1.46
[INFO] [stderr]     Checking num-complex v0.4.6
[INFO] [stderr]     Checking num-bigint v0.4.6
[INFO] [stderr]     Checking num-iter v0.1.45
[INFO] [stderr]     Checking num-rational v0.4.2
[INFO] [stderr]     Checking num v0.4.3
[INFO] [stderr]    Compiling strum_macros v0.27.1
[INFO] [stderr]     Checking graphviz_dot_builder v0.1.5
[INFO] [stderr]     Checking autour_core v0.1.12 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/gnfa/implem/access.rs:49:24
[INFO] [stdout]    |
[INFO] [stdout] 49 |     fn make_accessible(mut self) -> Self {
[INFO] [stdout]    |                        ----^^^^
[INFO] [stdout]    |                        |
[INFO] [stdout]    |                        help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `other`
[INFO] [stdout]   --> src/gnfa/implem/build.rs:26:24
[INFO] [stdout]    |
[INFO] [stdout] 26 |     fn unite(mut self, other: Self) -> Result<Self,AutError<Letter>> {
[INFO] [stdout]    |                        ^^^^^ help: if this is intentional, prefix it with an underscore: `_other`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/gnfa/implem/build.rs:26:14
[INFO] [stdout]    |
[INFO] [stdout] 26 |     fn unite(mut self, other: Self) -> Result<Self,AutError<Letter>> {
[INFO] [stdout]    |              ----^^^^
[INFO] [stdout]    |              |
[INFO] [stdout]    |              help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `other`
[INFO] [stdout]   --> src/gnfa/implem/build.rs:30:34
[INFO] [stdout]    |
[INFO] [stdout] 30 |     fn concatenate(mut self, mut other: Self) -> Result<Self,AutError<Letter>> {
[INFO] [stdout]    |                                  ^^^^^ help: if this is intentional, prefix it with an underscore: `_other`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/gnfa/implem/build.rs:30:20
[INFO] [stdout]    |
[INFO] [stdout] 30 |     fn concatenate(mut self, mut other: Self) -> Result<Self,AutError<Letter>> {
[INFO] [stdout]    |                    ----^^^^
[INFO] [stdout]    |                    |
[INFO] [stdout]    |                    help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/gnfa/implem/build.rs:30:30
[INFO] [stdout]    |
[INFO] [stdout] 30 |     fn concatenate(mut self, mut other: Self) -> Result<Self,AutError<Letter>> {
[INFO] [stdout]    |                              ----^^^^^
[INFO] [stdout]    |                              |
[INFO] [stdout]    |                              help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `num`
[INFO] [stdout]   --> src/gnfa/implem/build.rs:34:21
[INFO] [stdout]    |
[INFO] [stdout] 34 |     fn repeat(self, num : usize) -> Self {
[INFO] [stdout]    |                     ^^^ help: if this is intentional, prefix it with an underscore: `_num`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/gnfa/implem/build.rs:38:15
[INFO] [stdout]    |
[INFO] [stdout] 38 |     fn kleene(mut self) -> Self {
[INFO] [stdout]    |               ----^^^^
[INFO] [stdout]    |               |
[INFO] [stdout]    |               help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `num`
[INFO] [stdout]   --> src/gnfa/implem/build.rs:42:26
[INFO] [stdout]    |
[INFO] [stdout] 42 |     fn at_most(mut self, num: usize) -> Self {
[INFO] [stdout]    |                          ^^^ help: if this is intentional, prefix it with an underscore: `_num`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/gnfa/implem/build.rs:42:16
[INFO] [stdout]    |
[INFO] [stdout] 42 |     fn at_most(mut self, num: usize) -> Self {
[INFO] [stdout]    |                ----^^^^
[INFO] [stdout]    |                |
[INFO] [stdout]    |                help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `num`
[INFO] [stdout]   --> src/gnfa/implem/build.rs:46:23
[INFO] [stdout]    |
[INFO] [stdout] 46 |     fn at_least(self, num: usize) -> Self {
[INFO] [stdout]    |                       ^^^ help: if this is intentional, prefix it with an underscore: `_num`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `r`
[INFO] [stdout]   --> src/gnfa/implem/build.rs:50:50
[INFO] [stdout]    |
[INFO] [stdout] 50 |     fn repeat_range<R: RangeBounds<usize>>(self, r: R) -> Self {
[INFO] [stdout]    |                                                  ^ help: if this is intentional, prefix it with an underscore: `_r`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `active_states`
[INFO] [stdout]   --> src/gnfa/implem/run.rs:32:23
[INFO] [stdout]    |
[INFO] [stdout] 32 |                       active_states: &HashSet<usize>,
[INFO] [stdout]    |                       ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_active_states`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `letter`
[INFO] [stdout]   --> src/gnfa/implem/run.rs:33:23
[INFO] [stdout]    |
[INFO] [stdout] 33 |                       letter: &Letter) ->  Result<HashSet<usize>,AutError<Letter>> {
[INFO] [stdout]    |                       ^^^^^^ help: if this is intentional, prefix it with an underscore: `_letter`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `SYNTAX_WILDCARD_HASHTAG` is never used
[INFO] [stdout]   --> src/printers/commons.rs:25:11
[INFO] [stdout]    |
[INFO] [stdout] 25 | pub const SYNTAX_WILDCARD_HASHTAG : &str = "#";
[INFO] [stdout]    |           ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `SYNTAX_CONCATENATION_DOT` is never used
[INFO] [stdout]   --> src/printers/commons.rs:28:11
[INFO] [stdout]    |
[INFO] [stdout] 28 | pub const SYNTAX_CONCATENATION_DOT : &str = ".";
[INFO] [stdout]    |           ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/gnfa/implem/access.rs:49:24
[INFO] [stdout]    |
[INFO] [stdout] 49 |     fn make_accessible(mut self) -> Self {
[INFO] [stdout]    |                        ----^^^^
[INFO] [stdout]    |                        |
[INFO] [stdout]    |                        help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `other`
[INFO] [stdout]   --> src/gnfa/implem/build.rs:26:24
[INFO] [stdout]    |
[INFO] [stdout] 26 |     fn unite(mut self, other: Self) -> Result<Self,AutError<Letter>> {
[INFO] [stdout]    |                        ^^^^^ help: if this is intentional, prefix it with an underscore: `_other`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/gnfa/implem/build.rs:26:14
[INFO] [stdout]    |
[INFO] [stdout] 26 |     fn unite(mut self, other: Self) -> Result<Self,AutError<Letter>> {
[INFO] [stdout]    |              ----^^^^
[INFO] [stdout]    |              |
[INFO] [stdout]    |              help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `other`
[INFO] [stdout]   --> src/gnfa/implem/build.rs:30:34
[INFO] [stdout]    |
[INFO] [stdout] 30 |     fn concatenate(mut self, mut other: Self) -> Result<Self,AutError<Letter>> {
[INFO] [stdout]    |                                  ^^^^^ help: if this is intentional, prefix it with an underscore: `_other`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/gnfa/implem/build.rs:30:20
[INFO] [stdout]    |
[INFO] [stdout] 30 |     fn concatenate(mut self, mut other: Self) -> Result<Self,AutError<Letter>> {
[INFO] [stdout]    |                    ----^^^^
[INFO] [stdout]    |                    |
[INFO] [stdout]    |                    help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/gnfa/implem/build.rs:30:30
[INFO] [stdout]    |
[INFO] [stdout] 30 |     fn concatenate(mut self, mut other: Self) -> Result<Self,AutError<Letter>> {
[INFO] [stdout]    |                              ----^^^^^
[INFO] [stdout]    |                              |
[INFO] [stdout]    |                              help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `num`
[INFO] [stdout]   --> src/gnfa/implem/build.rs:34:21
[INFO] [stdout]    |
[INFO] [stdout] 34 |     fn repeat(self, num : usize) -> Self {
[INFO] [stdout]    |                     ^^^ help: if this is intentional, prefix it with an underscore: `_num`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/gnfa/implem/build.rs:38:15
[INFO] [stdout]    |
[INFO] [stdout] 38 |     fn kleene(mut self) -> Self {
[INFO] [stdout]    |               ----^^^^
[INFO] [stdout]    |               |
[INFO] [stdout]    |               help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `num`
[INFO] [stdout]   --> src/gnfa/implem/build.rs:42:26
[INFO] [stdout]    |
[INFO] [stdout] 42 |     fn at_most(mut self, num: usize) -> Self {
[INFO] [stdout]    |                          ^^^ help: if this is intentional, prefix it with an underscore: `_num`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/gnfa/implem/build.rs:42:16
[INFO] [stdout]    |
[INFO] [stdout] 42 |     fn at_most(mut self, num: usize) -> Self {
[INFO] [stdout]    |                ----^^^^
[INFO] [stdout]    |                |
[INFO] [stdout]    |                help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `num`
[INFO] [stdout]   --> src/gnfa/implem/build.rs:46:23
[INFO] [stdout]    |
[INFO] [stdout] 46 |     fn at_least(self, num: usize) -> Self {
[INFO] [stdout]    |                       ^^^ help: if this is intentional, prefix it with an underscore: `_num`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `r`
[INFO] [stdout]   --> src/gnfa/implem/build.rs:50:50
[INFO] [stdout]    |
[INFO] [stdout] 50 |     fn repeat_range<R: RangeBounds<usize>>(self, r: R) -> Self {
[INFO] [stdout]    |                                                  ^ help: if this is intentional, prefix it with an underscore: `_r`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `active_states`
[INFO] [stdout]   --> src/gnfa/implem/run.rs:32:23
[INFO] [stdout]    |
[INFO] [stdout] 32 |                       active_states: &HashSet<usize>,
[INFO] [stdout]    |                       ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_active_states`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `letter`
[INFO] [stdout]   --> src/gnfa/implem/run.rs:33:23
[INFO] [stdout]    |
[INFO] [stdout] 33 |                       letter: &Letter) ->  Result<HashSet<usize>,AutError<Letter>> {
[INFO] [stdout]    |                       ^^^^^^ help: if this is intentional, prefix it with an underscore: `_letter`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `SYNTAX_WILDCARD_HASHTAG` is never used
[INFO] [stdout]   --> src/printers/commons.rs:25:11
[INFO] [stdout]    |
[INFO] [stdout] 25 | pub const SYNTAX_WILDCARD_HASHTAG : &str = "#";
[INFO] [stdout]    |           ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `SYNTAX_CONCATENATION_DOT` is never used
[INFO] [stdout]   --> src/printers/commons.rs:28:11
[INFO] [stdout]    |
[INFO] [stdout] 28 | pub const SYNTAX_CONCATENATION_DOT : &str = ".";
[INFO] [stdout]    |           ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 8.58s
[INFO] running `Command { std: "docker" "inspect" "2fcac74da79425f386ba2c77c8689fd517e2cfa107a8a640c8d692cac8cd27c6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2fcac74da79425f386ba2c77c8689fd517e2cfa107a8a640c8d692cac8cd27c6", kill_on_drop: false }`
[INFO] [stdout] 2fcac74da79425f386ba2c77c8689fd517e2cfa107a8a640c8d692cac8cd27c6
