[INFO] fetching crate structbuf 0.3.4...
[INFO] testing structbuf-0.3.4 against try#b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b for pr-145330-1
[INFO] extracting crate structbuf 0.3.4 into /workspace/builds/worker-2-tc2/source
[INFO] started tweaking crates.io crate structbuf 0.3.4
[INFO] finished tweaking crates.io crate structbuf 0.3.4
[INFO] tweaked toml for crates.io crate structbuf 0.3.4 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate structbuf 0.3.4 on toolchain b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 1 package to latest compatible version
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e0ccda6c4bf482ac0f8356d89956089eb5a3c646e216815e119b0cc46a89e855
[INFO] running `Command { std: "docker" "start" "-a" "e0ccda6c4bf482ac0f8356d89956089eb5a3c646e216815e119b0cc46a89e855", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e0ccda6c4bf482ac0f8356d89956089eb5a3c646e216815e119b0cc46a89e855", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e0ccda6c4bf482ac0f8356d89956089eb5a3c646e216815e119b0cc46a89e855", kill_on_drop: false }`
[INFO] [stdout] e0ccda6c4bf482ac0f8356d89956089eb5a3c646e216815e119b0cc46a89e855
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6a7ab0f89b26eb57008af6d787cac0385dbceeedf77d63b0eade09bfb2cc7b9b
[INFO] running `Command { std: "docker" "start" "-a" "6a7ab0f89b26eb57008af6d787cac0385dbceeedf77d63b0eade09bfb2cc7b9b", kill_on_drop: false }`
[INFO] [stderr]    Compiling smallvec v1.15.1
[INFO] [stderr]    Compiling structbuf v0.3.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary qualification
[INFO] [stdout]    --> src/lib.rs:780:53
[INFO] [stdout]     |
[INFO] [stdout] 780 |         if let Some(rem) = self.0.len().checked_sub(mem::size_of::<T>()) {
[INFO] [stdout]     |                                                     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]    --> src/lib.rs:43:9
[INFO] [stdout]     |
[INFO] [stdout]  43 | #![warn(unused_qualifications)]
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] help: remove the unnecessary path segments
[INFO] [stdout]     |
[INFO] [stdout] 780 -         if let Some(rem) = self.0.len().checked_sub(mem::size_of::<T>()) {
[INFO] [stdout] 780 +         if let Some(rem) = self.0.len().checked_sub(size_of::<T>()) {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[must_use]` has no effect when applied to a provided trait method
[INFO] [stdout]    --> src/lib.rs:804:5
[INFO] [stdout]     |
[INFO] [stdout] 804 |     #[must_use]
[INFO] [stdout]     |     ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_attributes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/lib.rs:101:15
[INFO] [stdout]     |
[INFO] [stdout] 101 |     fn append(&mut self) -> Packer;
[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] 101 |     fn append(&mut self) -> Packer<'_>;
[INFO] [stdout]     |                                   ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/lib.rs:106:11
[INFO] [stdout]     |
[INFO] [stdout] 106 |     fn at(&mut self, i: usize) -> Packer;
[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] 106 |     fn at(&mut self, i: usize) -> Packer<'_>;
[INFO] [stdout]     |                                         ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/lib.rs:112:15
[INFO] [stdout]     |
[INFO] [stdout] 112 |     fn unpack(&self) -> Unpacker;
[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] 112 |     fn unpack(&self) -> Unpacker<'_>;
[INFO] [stdout]     |                                 ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/lib.rs:118:15
[INFO] [stdout]     |
[INFO] [stdout] 118 |     fn unpack(&self) -> Unpacker {
[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] 118 |     fn unpack(&self) -> Unpacker<'_> {
[INFO] [stdout]     |                                 ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/lib.rs:336:15
[INFO] [stdout]     |
[INFO] [stdout] 336 |     fn append(&mut self) -> Packer {
[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] 336 |     fn append(&mut self) -> Packer<'_> {
[INFO] [stdout]     |                                   ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/lib.rs:341:11
[INFO] [stdout]     |
[INFO] [stdout] 341 |     fn at(&mut self, i: usize) -> Packer {
[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] 341 |     fn at(&mut self, i: usize) -> Packer<'_> {
[INFO] [stdout]     |                                         ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.43s
[INFO] running `Command { std: "docker" "inspect" "6a7ab0f89b26eb57008af6d787cac0385dbceeedf77d63b0eade09bfb2cc7b9b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6a7ab0f89b26eb57008af6d787cac0385dbceeedf77d63b0eade09bfb2cc7b9b", kill_on_drop: false }`
[INFO] [stdout] 6a7ab0f89b26eb57008af6d787cac0385dbceeedf77d63b0eade09bfb2cc7b9b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7a951add73a7f2146df7f17e3d9e94ba5b2b762fbd4c15d313e76520cb747555
[INFO] running `Command { std: "docker" "start" "-a" "7a951add73a7f2146df7f17e3d9e94ba5b2b762fbd4c15d313e76520cb747555", kill_on_drop: false }`
[INFO] [stdout] warning: unnecessary qualification
[INFO] [stdout]    --> src/lib.rs:780:53
[INFO] [stdout]     |
[INFO] [stdout] 780 |         if let Some(rem) = self.0.len().checked_sub(mem::size_of::<T>()) {
[INFO] [stdout]     |                                                     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]    --> src/lib.rs:43:9
[INFO] [stdout]     |
[INFO] [stdout]  43 | #![warn(unused_qualifications)]
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] help: remove the unnecessary path segments
[INFO] [stdout]     |
[INFO] [stdout] 780 -         if let Some(rem) = self.0.len().checked_sub(mem::size_of::<T>()) {
[INFO] [stdout] 780 +         if let Some(rem) = self.0.len().checked_sub(size_of::<T>()) {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[must_use]` has no effect when applied to a provided trait method
[INFO] [stdout]    --> src/lib.rs:804:5
[INFO] [stdout]     |
[INFO] [stdout] 804 |     #[must_use]
[INFO] [stdout]     |     ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_attributes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/lib.rs:101:15
[INFO] [stdout]     |
[INFO] [stdout] 101 |     fn append(&mut self) -> Packer;
[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] 101 |     fn append(&mut self) -> Packer<'_>;
[INFO] [stdout]     |                                   ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/lib.rs:106:11
[INFO] [stdout]     |
[INFO] [stdout] 106 |     fn at(&mut self, i: usize) -> Packer;
[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] 106 |     fn at(&mut self, i: usize) -> Packer<'_>;
[INFO] [stdout]     |                                         ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/lib.rs:112:15
[INFO] [stdout]     |
[INFO] [stdout] 112 |     fn unpack(&self) -> Unpacker;
[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] 112 |     fn unpack(&self) -> Unpacker<'_>;
[INFO] [stdout]     |                                 ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/lib.rs:118:15
[INFO] [stdout]     |
[INFO] [stdout] 118 |     fn unpack(&self) -> Unpacker {
[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] 118 |     fn unpack(&self) -> Unpacker<'_> {
[INFO] [stdout]     |                                 ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/lib.rs:336:15
[INFO] [stdout]     |
[INFO] [stdout] 336 |     fn append(&mut self) -> Packer {
[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] 336 |     fn append(&mut self) -> Packer<'_> {
[INFO] [stdout]     |                                   ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/lib.rs:341:11
[INFO] [stdout]     |
[INFO] [stdout] 341 |     fn at(&mut self, i: usize) -> Packer {
[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] 341 |     fn at(&mut self, i: usize) -> Packer<'_> {
[INFO] [stdout]     |                                         ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling structbuf v0.3.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary qualification
[INFO] [stdout]    --> src/lib.rs:780:53
[INFO] [stdout]     |
[INFO] [stdout] 780 |         if let Some(rem) = self.0.len().checked_sub(mem::size_of::<T>()) {
[INFO] [stdout]     |                                                     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]    --> src/lib.rs:43:9
[INFO] [stdout]     |
[INFO] [stdout]  43 | #![warn(unused_qualifications)]
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] help: remove the unnecessary path segments
[INFO] [stdout]     |
[INFO] [stdout] 780 -         if let Some(rem) = self.0.len().checked_sub(mem::size_of::<T>()) {
[INFO] [stdout] 780 +         if let Some(rem) = self.0.len().checked_sub(size_of::<T>()) {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[must_use]` has no effect when applied to a provided trait method
[INFO] [stdout]    --> src/lib.rs:804:5
[INFO] [stdout]     |
[INFO] [stdout] 804 |     #[must_use]
[INFO] [stdout]     |     ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_attributes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/lib.rs:101:15
[INFO] [stdout]     |
[INFO] [stdout] 101 |     fn append(&mut self) -> Packer;
[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] 101 |     fn append(&mut self) -> Packer<'_>;
[INFO] [stdout]     |                                   ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/lib.rs:106:11
[INFO] [stdout]     |
[INFO] [stdout] 106 |     fn at(&mut self, i: usize) -> Packer;
[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] 106 |     fn at(&mut self, i: usize) -> Packer<'_>;
[INFO] [stdout]     |                                         ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/lib.rs:112:15
[INFO] [stdout]     |
[INFO] [stdout] 112 |     fn unpack(&self) -> Unpacker;
[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] 112 |     fn unpack(&self) -> Unpacker<'_>;
[INFO] [stdout]     |                                 ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/lib.rs:118:15
[INFO] [stdout]     |
[INFO] [stdout] 118 |     fn unpack(&self) -> Unpacker {
[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] 118 |     fn unpack(&self) -> Unpacker<'_> {
[INFO] [stdout]     |                                 ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/lib.rs:336:15
[INFO] [stdout]     |
[INFO] [stdout] 336 |     fn append(&mut self) -> Packer {
[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] 336 |     fn append(&mut self) -> Packer<'_> {
[INFO] [stdout]     |                                   ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/lib.rs:341:11
[INFO] [stdout]     |
[INFO] [stdout] 341 |     fn at(&mut self, i: usize) -> Packer {
[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] 341 |     fn at(&mut self, i: usize) -> Packer<'_> {
[INFO] [stdout]     |                                         ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.58s
[INFO] running `Command { std: "docker" "inspect" "7a951add73a7f2146df7f17e3d9e94ba5b2b762fbd4c15d313e76520cb747555", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7a951add73a7f2146df7f17e3d9e94ba5b2b762fbd4c15d313e76520cb747555", kill_on_drop: false }`
[INFO] [stdout] 7a951add73a7f2146df7f17e3d9e94ba5b2b762fbd4c15d313e76520cb747555
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 5c1a5b46e7f7c678eb2d6a6bf5e63ee67056fec52b23ad2ad190343e2c3e3d0b
[INFO] running `Command { std: "docker" "start" "-a" "5c1a5b46e7f7c678eb2d6a6bf5e63ee67056fec52b23ad2ad190343e2c3e3d0b", kill_on_drop: false }`
[INFO] [stderr] warning: unnecessary qualification
[INFO] [stderr]    --> src/lib.rs:780:53
[INFO] [stderr]     |
[INFO] [stderr] 780 |         if let Some(rem) = self.0.len().checked_sub(mem::size_of::<T>()) {
[INFO] [stderr]     |                                                     ^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr] note: the lint level is defined here
[INFO] [stderr]    --> src/lib.rs:43:9
[INFO] [stderr]     |
[INFO] [stderr]  43 | #![warn(unused_qualifications)]
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] help: remove the unnecessary path segments
[INFO] [stderr]     |
[INFO] [stderr] 780 -         if let Some(rem) = self.0.len().checked_sub(mem::size_of::<T>()) {
[INFO] [stderr] 780 +         if let Some(rem) = self.0.len().checked_sub(size_of::<T>()) {
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: `#[must_use]` has no effect when applied to a provided trait method
[INFO] [stderr]    --> src/lib.rs:804:5
[INFO] [stderr]     |
[INFO] [stderr] 804 |     #[must_use]
[INFO] [stderr]     |     ^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_attributes)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]    --> src/lib.rs:101:15
[INFO] [stderr]     |
[INFO] [stderr] 101 |     fn append(&mut self) -> Packer;
[INFO] [stderr]     |               ^^^^^^^^^     ------ the same lifetime is hidden here
[INFO] [stderr]     |               |
[INFO] [stderr]     |               the lifetime is elided here
[INFO] [stderr]     |
[INFO] [stderr]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stderr] help: use `'_` for type paths
[INFO] [stderr]     |
[INFO] [stderr] 101 |     fn append(&mut self) -> Packer<'_>;
[INFO] [stderr]     |                                   ++++
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]    --> src/lib.rs:106:11
[INFO] [stderr]     |
[INFO] [stderr] 106 |     fn at(&mut self, i: usize) -> Packer;
[INFO] [stderr]     |           ^^^^^^^^^               ------ the same lifetime is hidden here
[INFO] [stderr]     |           |
[INFO] [stderr]     |           the lifetime is elided here
[INFO] [stderr]     |
[INFO] [stderr]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr] help: use `'_` for type paths
[INFO] [stderr]     |
[INFO] [stderr] 106 |     fn at(&mut self, i: usize) -> Packer<'_>;
[INFO] [stderr]     |                                         ++++
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]    --> src/lib.rs:112:15
[INFO] [stderr]     |
[INFO] [stderr] 112 |     fn unpack(&self) -> Unpacker;
[INFO] [stderr]     |               ^^^^^     -------- the same lifetime is hidden here
[INFO] [stderr]     |               |
[INFO] [stderr]     |               the lifetime is elided here
[INFO] [stderr]     |
[INFO] [stderr]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr] help: use `'_` for type paths
[INFO] [stderr]     |
[INFO] [stderr] 112 |     fn unpack(&self) -> Unpacker<'_>;
[INFO] [stderr]     |                                 ++++
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]    --> src/lib.rs:118:15
[INFO] [stderr]     |
[INFO] [stderr] 118 |     fn unpack(&self) -> Unpacker {
[INFO] [stderr]     |               ^^^^^     -------- the same lifetime is hidden here
[INFO] [stderr]     |               |
[INFO] [stderr]     |               the lifetime is elided here
[INFO] [stderr]     |
[INFO] [stderr]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr] help: use `'_` for type paths
[INFO] [stderr]     |
[INFO] [stderr] 118 |     fn unpack(&self) -> Unpacker<'_> {
[INFO] [stderr]     |                                 ++++
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]    --> src/lib.rs:336:15
[INFO] [stderr]     |
[INFO] [stderr] 336 |     fn append(&mut self) -> Packer {
[INFO] [stderr]     |               ^^^^^^^^^     ------ the same lifetime is hidden here
[INFO] [stderr]     |               |
[INFO] [stderr]     |               the lifetime is elided here
[INFO] [stderr]     |
[INFO] [stderr]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr] help: use `'_` for type paths
[INFO] [stderr]     |
[INFO] [stderr] 336 |     fn append(&mut self) -> Packer<'_> {
[INFO] [stderr]     |                                   ++++
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]    --> src/lib.rs:341:11
[INFO] [stderr]     |
[INFO] [stderr] 341 |     fn at(&mut self, i: usize) -> Packer {
[INFO] [stderr]     |           ^^^^^^^^^               ------ the same lifetime is hidden here
[INFO] [stderr]     |           |
[INFO] [stderr]     |           the lifetime is elided here
[INFO] [stderr]     |
[INFO] [stderr]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr] help: use `'_` for type paths
[INFO] [stderr]     |
[INFO] [stderr] 341 |     fn at(&mut self, i: usize) -> Packer<'_> {
[INFO] [stderr]     |                                         ++++
[INFO] [stderr] 
[INFO] [stderr] warning: `structbuf` (lib) generated 8 warnings (run `cargo fix --lib -p structbuf` to apply 8 suggestions)
[INFO] [stderr] warning: `structbuf` (lib test) generated 8 warnings (8 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/structbuf-e0ca1c67d1c0c002)
[INFO] [stdout] running 7 tests
[INFO] [stdout] test tests::packer ... ok
[INFO] [stdout] test tests::packer_pad ... ok
[INFO] [stdout] test tests::unpacker ... ok
[INFO] [stdout] test tests::unpacker_skip ... ok
[INFO] [stdout] test tests::unpacker_take ... ok
[INFO] [stdout] test tests::packer_overwrite ... ok
[INFO] [stdout] test tests::packer_limit - should panic ... ok
[INFO] [stderr]    Doc-tests structbuf
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 7 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.05s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test src/lib.rs - StructBuf::put_at (line 280) ... ok
[INFO] [stdout] test src/lib.rs - Unpacker<'a>::skip (line 647) ... ok
[INFO] [stdout] test src/lib.rs - (line 20) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.59s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "5c1a5b46e7f7c678eb2d6a6bf5e63ee67056fec52b23ad2ad190343e2c3e3d0b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5c1a5b46e7f7c678eb2d6a6bf5e63ee67056fec52b23ad2ad190343e2c3e3d0b", kill_on_drop: false }`
[INFO] [stdout] 5c1a5b46e7f7c678eb2d6a6bf5e63ee67056fec52b23ad2ad190343e2c3e3d0b