[INFO] cloning repository https://github.com/etaoins/arret
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/etaoins/arret" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fetaoins%2Farret", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fetaoins%2Farret'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3b3bae27ca7283376d420fa7d69fe5073ecf9ef0
[INFO] checking etaoins/arret against try#a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d for pr-145342
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fetaoins%2Farret" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/etaoins/arret
[INFO] finished tweaking git repo https://github.com/etaoins/arret
[INFO] tweaked toml for git repo https://github.com/etaoins/arret written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/etaoins/arret on toolchain a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/etaoins/arret 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" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "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 llvm-sys v100.2.0
[INFO] [stderr]   Downloaded codespan-reporting v0.11.0
[INFO] [stderr]   Downloaded lsp-types v0.84.0
[INFO] [stderr]   Downloaded rustyline v9.0.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5ac29222caeddce78fe4ad1536bfd6c1512b5ff7d2a98bdf9a15ebc0752a8359
[INFO] running `Command { std: "docker" "start" "-a" "5ac29222caeddce78fe4ad1536bfd6c1512b5ff7d2a98bdf9a15ebc0752a8359", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5ac29222caeddce78fe4ad1536bfd6c1512b5ff7d2a98bdf9a15ebc0752a8359", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5ac29222caeddce78fe4ad1536bfd6c1512b5ff7d2a98bdf9a15ebc0752a8359", kill_on_drop: false }`
[INFO] [stdout] 5ac29222caeddce78fe4ad1536bfd6c1512b5ff7d2a98bdf9a15ebc0752a8359
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b1f94d255538858d7272db08b34f8a32932095b60da67b02e5626f10272d17e7
[INFO] running `Command { std: "docker" "start" "-a" "b1f94d255538858d7272db08b34f8a32932095b60da67b02e5626f10272d17e7", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.102
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling syn v1.0.67
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking arret-syntax v0.1.0 (/opt/rustwide/workdir/syntax)
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling thread_local v1.0.1
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]     Checking unicode-width v0.1.8
[INFO] [stderr]    Compiling regex-syntax v0.6.21
[INFO] [stderr]     Checking arret-runtime v0.1.0 (/opt/rustwide/workdir/runtime)
[INFO] [stderr]    Compiling crossbeam-utils v0.8.1
[INFO] [stderr]    Compiling cc v1.0.66
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> runtime/boxed/types/vector.rs:143:38
[INFO] [stdout]     |
[INFO] [stdout] 143 |     pub fn iter<'a>(&'a self) -> Box<(dyn ExactSizeIterator<Item = Gc<T>> + 'a)> {
[INFO] [stdout]     |                                      ^                                        ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 143 -     pub fn iter<'a>(&'a self) -> Box<(dyn ExactSizeIterator<Item = Gc<T>> + 'a)> {
[INFO] [stdout] 143 +     pub fn iter<'a>(&'a self) -> Box<dyn ExactSizeIterator<Item = Gc<T>> + 'a> {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling aho-corasick v0.7.15
[INFO] [stderr]    Compiling getrandom v0.1.15
[INFO] [stderr]    Compiling serde_derive v1.0.118
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> runtime/boxed/types/record.rs:268:12
[INFO] [stdout]     |
[INFO] [stdout] 268 |     Inline(&'a mut InlineRecord),
[INFO] [stdout]     |     ------ ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |     |
[INFO] [stdout]     |     field in this variant
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]     |
[INFO] [stdout] 268 -     Inline(&'a mut InlineRecord),
[INFO] [stdout] 268 +     Inline(()),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> runtime/boxed/types/set.rs:423:12
[INFO] [stdout]     |
[INFO] [stdout] 423 |     Inline(&'a mut InlineSet<T>),
[INFO] [stdout]     |     ------ ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |     |
[INFO] [stdout]     |     field in this variant
[INFO] [stdout]     |
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]     |
[INFO] [stdout] 423 -     Inline(&'a mut InlineSet<T>),
[INFO] [stdout] 423 +     Inline(()),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> runtime/boxed/types/str.rs:202:12
[INFO] [stdout]     |
[INFO] [stdout] 202 |     Inline(&'a mut InlineStr),
[INFO] [stdout]     |     ------ ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |     |
[INFO] [stdout]     |     field in this variant
[INFO] [stdout]     |
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]     |
[INFO] [stdout] 202 -     Inline(&'a mut InlineStr),
[INFO] [stdout] 202 +     Inline(()),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: eliding a lifetime that's named elsewhere is confusing
[INFO] [stdout]    --> runtime/boxed/types/vector.rs:325:22
[INFO] [stdout]     |
[INFO] [stdout] 325 |     fn iter_mut<'a>(&'a mut self) -> impl ExactSizeIterator<Item = &mut Gc<T>> + 'a {
[INFO] [stdout]     |                      ^^                                            ----------    -- the same lifetime is named here
[INFO] [stdout]     |                      |                                             |
[INFO] [stdout]     |                      the lifetime is named here                    the same 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: consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 325 |     fn iter_mut<'a>(&'a mut self) -> impl ExactSizeIterator<Item = &'a mut Gc<T>> + 'a {
[INFO] [stdout]     |                                                                     ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: implicit autoref creates a reference to the dereference of a raw pointer
[INFO] [stdout]    --> runtime/persistent/vector.rs:154:44
[INFO] [stdout]     |
[INFO] [stdout] 154 |                 .copy_from_slice(unsafe { &(*self.tail).elements.leaf[..self.tail_size()] });
[INFO] [stdout]     |                                            ^^---------^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |                                              |
[INFO] [stdout]     |                                              this raw pointer has type `*const Node<T>`
[INFO] [stdout]     |
[INFO] [stdout]     = note: creating a reference requires the pointer target to be valid and imposes aliasing requirements
[INFO] [stdout] note: autoref is being applied to this expression, resulting in: `&[MaybeUninit<T>; 32]`
[INFO] [stdout]    --> runtime/persistent/vector.rs:154:44
[INFO] [stdout]     |
[INFO] [stdout] 154 |                 .copy_from_slice(unsafe { &(*self.tail).elements.leaf[..self.tail_size()] });
[INFO] [stdout]     |                                            ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     = note: `#[deny(dangerous_implicit_autorefs)]` on by default
[INFO] [stdout] help: try using a raw pointer method instead; or if this reference is intentional, make it explicit
[INFO] [stdout]     |
[INFO] [stdout] 154 |                 .copy_from_slice(unsafe { &(&(*self.tail).elements.leaf)[..self.tail_size()] });
[INFO] [stdout]     |                                            ++                          +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking tinyvec_macros v0.1.0
[INFO] [stderr] error: could not compile `arret-runtime` (lib) due to 1 previous error; 5 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "b1f94d255538858d7272db08b34f8a32932095b60da67b02e5626f10272d17e7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b1f94d255538858d7272db08b34f8a32932095b60da67b02e5626f10272d17e7", kill_on_drop: false }`
[INFO] [stdout] b1f94d255538858d7272db08b34f8a32932095b60da67b02e5626f10272d17e7
