[INFO] cloning repository https://github.com/birdbrainswagtrain/combinatorio
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/birdbrainswagtrain/combinatorio" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbirdbrainswagtrain%2Fcombinatorio", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbirdbrainswagtrain%2Fcombinatorio'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 89240facff6bc0b341164580c29721ddcaf812d8
[INFO] checking birdbrainswagtrain/combinatorio against master#bca37a20bd376ce3fd138e7cdee7fe704e0f8814 for pr-139493-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbirdbrainswagtrain%2Fcombinatorio" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/birdbrainswagtrain/combinatorio
[INFO] finished tweaking git repo https://github.com/birdbrainswagtrain/combinatorio
[INFO] tweaked toml for git repo https://github.com/birdbrainswagtrain/combinatorio written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/birdbrainswagtrain/combinatorio on toolchain bca37a20bd376ce3fd138e7cdee7fe704e0f8814
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/birdbrainswagtrain/combinatorio already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rust-embed-impl v6.1.0
[INFO] [stderr]   Downloaded rust-embed-utils v7.0.0
[INFO] [stderr]   Downloaded rust-embed v6.2.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 34f983db2be7c52fe89de93bcf1f89e51036feca385653263b9572826d07cea1
[INFO] running `Command { std: "docker" "start" "-a" "34f983db2be7c52fe89de93bcf1f89e51036feca385653263b9572826d07cea1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "34f983db2be7c52fe89de93bcf1f89e51036feca385653263b9572826d07cea1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "34f983db2be7c52fe89de93bcf1f89e51036feca385653263b9572826d07cea1", kill_on_drop: false }`
[INFO] [stdout] 34f983db2be7c52fe89de93bcf1f89e51036feca385653263b9572826d07cea1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5b6eb20f2a74e9471e69a21133304085cbe938786aec14373f1f5900ebfb3e7c
[INFO] running `Command { std: "docker" "start" "-a" "5b6eb20f2a74e9471e69a21133304085cbe938786aec14373f1f5900ebfb3e7c", kill_on_drop: false }`
[INFO] [stderr]    Compiling generic-array v0.14.4
[INFO] [stderr]    Compiling serde_derive v1.0.125
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling walkdir v2.3.2
[INFO] [stderr]    Compiling serde v1.0.125
[INFO] [stderr]     Checking getrandom v0.2.2
[INFO] [stderr]     Checking os_str_bytes v4.2.0
[INFO] [stderr]     Checking textwrap v0.14.2
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking flate2 v1.0.20
[INFO] [stderr]     Checking rand_core v0.6.2
[INFO] [stderr]    Compiling syn v1.0.81
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]     Checking rand_chacha v0.3.0
[INFO] [stderr]     Checking rand v0.8.3
[INFO] [stderr]     Checking digest v0.9.0
[INFO] [stderr]     Checking block-buffer v0.9.0
[INFO] [stderr]     Checking sha2 v0.9.8
[INFO] [stderr]     Checking rust-embed-utils v7.0.0
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling rust-embed-impl v6.1.0
[INFO] [stderr]    Compiling clap_derive v3.0.0-beta.5
[INFO] [stderr]     Checking rust-embed v6.2.0
[INFO] [stderr]     Checking clap v3.0.0-beta.5
[INFO] [stderr]     Checking serde_json v1.0.64
[INFO] [stderr]     Checking combinatorio v1.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: method `iter_mut` is never used
[INFO] [stdout]   --> src/ir/mod.rs:84:12
[INFO] [stdout]    |
[INFO] [stdout] 79 | impl NodeList {
[INFO] [stdout]    | ------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 84 |     pub fn iter_mut(&mut self) -> core::slice::IterMut<IRNode> {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/lexer.rs:83:24
[INFO] [stdout]    |
[INFO] [stdout] 83 |     pub fn new(string: &str) -> Lexer {
[INFO] [stdout]    |                        ^^^^     ^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                        |
[INFO] [stdout]    |                        the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 83 |     pub fn new(string: &str) -> Lexer<'_> {
[INFO] [stdout]    |                                      ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/ir/mod.rs:80:17
[INFO] [stdout]    |
[INFO] [stdout] 80 |     pub fn iter(&self) -> core::slice::Iter<IRNode> {
[INFO] [stdout]    |                 ^^^^^     ^^^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 80 |     pub fn iter(&self) -> core::slice::Iter<'_, IRNode> {
[INFO] [stdout]    |                                             +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/ir/mod.rs:84:21
[INFO] [stdout]    |
[INFO] [stdout] 84 |     pub fn iter_mut(&mut self) -> core::slice::IterMut<IRNode> {
[INFO] [stdout]    |                     ^^^^^^^^^     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                     |
[INFO] [stdout]    |                     the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 84 |     pub fn iter_mut(&mut self) -> core::slice::IterMut<'_, IRNode> {
[INFO] [stdout]    |                                                        +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/ir/mod.rs:88:23
[INFO] [stdout]    |
[INFO] [stdout] 88 |     pub fn iter_debug(&self) -> std::iter::Zip<core::slice::Iter<IRNode>,core::slice::Iter<String>> {
[INFO] [stdout]    |                       ^^^^^                    ^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                       |                        |
[INFO] [stdout]    |                       |                        the same lifetime is hidden here
[INFO] [stdout]    |                       the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 88 |     pub fn iter_debug(&self) -> std::iter::Zip<core::slice::Iter<'_, IRNode>,core::slice::Iter<'_, String>> {
[INFO] [stdout]    |                                                                  +++                           +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `iter_mut` is never used
[INFO] [stdout]   --> src/ir/mod.rs:84:12
[INFO] [stdout]    |
[INFO] [stdout] 79 | impl NodeList {
[INFO] [stdout]    | ------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 84 |     pub fn iter_mut(&mut self) -> core::slice::IterMut<IRNode> {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/lexer.rs:83:24
[INFO] [stdout]    |
[INFO] [stdout] 83 |     pub fn new(string: &str) -> Lexer {
[INFO] [stdout]    |                        ^^^^     ^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                        |
[INFO] [stdout]    |                        the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 83 |     pub fn new(string: &str) -> Lexer<'_> {
[INFO] [stdout]    |                                      ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/ir/mod.rs:80:17
[INFO] [stdout]    |
[INFO] [stdout] 80 |     pub fn iter(&self) -> core::slice::Iter<IRNode> {
[INFO] [stdout]    |                 ^^^^^     ^^^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 80 |     pub fn iter(&self) -> core::slice::Iter<'_, IRNode> {
[INFO] [stdout]    |                                             +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/ir/mod.rs:84:21
[INFO] [stdout]    |
[INFO] [stdout] 84 |     pub fn iter_mut(&mut self) -> core::slice::IterMut<IRNode> {
[INFO] [stdout]    |                     ^^^^^^^^^     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                     |
[INFO] [stdout]    |                     the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 84 |     pub fn iter_mut(&mut self) -> core::slice::IterMut<'_, IRNode> {
[INFO] [stdout]    |                                                        +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/ir/mod.rs:88:23
[INFO] [stdout]    |
[INFO] [stdout] 88 |     pub fn iter_debug(&self) -> std::iter::Zip<core::slice::Iter<IRNode>,core::slice::Iter<String>> {
[INFO] [stdout]    |                       ^^^^^                    ^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                       |                        |
[INFO] [stdout]    |                       |                        the same lifetime is hidden here
[INFO] [stdout]    |                       the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 88 |     pub fn iter_debug(&self) -> std::iter::Zip<core::slice::Iter<'_, IRNode>,core::slice::Iter<'_, String>> {
[INFO] [stdout]    |                                                                  +++                           +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 13.06s
[INFO] running `Command { std: "docker" "inspect" "5b6eb20f2a74e9471e69a21133304085cbe938786aec14373f1f5900ebfb3e7c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5b6eb20f2a74e9471e69a21133304085cbe938786aec14373f1f5900ebfb3e7c", kill_on_drop: false }`
[INFO] [stdout] 5b6eb20f2a74e9471e69a21133304085cbe938786aec14373f1f5900ebfb3e7c
