[INFO] fetching crate xeh 0.0.2...
[INFO] checking xeh-0.0.2 against try#c659ee110de67e82444e4b6c8407c1a9af9c2cf6 for pr-145608-1
[INFO] extracting crate xeh 0.0.2 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate xeh 0.0.2
[INFO] finished tweaking crates.io crate xeh 0.0.2
[INFO] tweaked toml for crates.io crate xeh 0.0.2 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate xeh 0.0.2 on toolchain c659ee110de67e82444e4b6c8407c1a9af9c2cf6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "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" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4e997cd156bbe99537443d02a35bcead55ff4032fb75fff9fbfd5ec58efca3f6
[INFO] running `Command { std: "docker" "start" "-a" "4e997cd156bbe99537443d02a35bcead55ff4032fb75fff9fbfd5ec58efca3f6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4e997cd156bbe99537443d02a35bcead55ff4032fb75fff9fbfd5ec58efca3f6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4e997cd156bbe99537443d02a35bcead55ff4032fb75fff9fbfd5ec58efca3f6", kill_on_drop: false }`
[INFO] [stdout] 4e997cd156bbe99537443d02a35bcead55ff4032fb75fff9fbfd5ec58efca3f6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f066a25dde2fa03b7972bb0d7e79cb94e390798563450b7a63e9c162b3ac30f2
[INFO] running `Command { std: "docker" "start" "-a" "f066a25dde2fa03b7972bb0d7e79cb94e390798563450b7a63e9c162b3ac30f2", kill_on_drop: false }`
[INFO] [stderr]     Checking xeh v0.0.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: `#[must_use]` has no effect when applied to provided trait methods
[INFO] [stdout]   --> src/vec.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 |     #[must_use]
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_attributes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[must_use]` has no effect when applied to provided trait methods
[INFO] [stdout]   --> src/vec.rs:30:5
[INFO] [stdout]    |
[INFO] [stdout] 30 |     #[must_use]
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[must_use]` has no effect when applied to provided trait methods
[INFO] [stdout]   --> src/vec.rs:38:5
[INFO] [stdout]    |
[INFO] [stdout] 38 |     #[must_use]
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `SliceVecDrain` is never constructed
[INFO] [stdout]    --> src/vec.rs:118:12
[INFO] [stdout]     |
[INFO] [stdout] 118 | pub struct SliceVecDrain<'p, 's, T: Default> {
[INFO] [stdout]     |            ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/lib.rs:34:23
[INFO] [stdout]    |
[INFO] [stdout] 34 | pub fn encode<T>(src: &T) -> Option<impl From<SliceVec<char>>>
[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] 34 | pub fn encode<T>(src: &T) -> Option<impl From<SliceVec<'_, char>>>
[INFO] [stdout]    |                                                        +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]  --> src/encode.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 7 |     fn hex(&self) -> Option<Hex>;
[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] 7 |     fn hex(&self) -> Option<Hex<'_>>;
[INFO] [stdout]   |                                ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/encode.rs:11:12
[INFO] [stdout]    |
[INFO] [stdout] 11 |     fn hex(&self) -> Option<Hex> {
[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] 11 |     fn hex(&self) -> Option<Hex<'_>> {
[INFO] [stdout]    |                                ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/encode.rs:23:12
[INFO] [stdout]    |
[INFO] [stdout] 23 |     fn hex(&self) -> Option<Hex> {
[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] 23 |     fn hex(&self) -> Option<Hex<'_>> {
[INFO] [stdout]    |                                ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/encode.rs:40:12
[INFO] [stdout]    |
[INFO] [stdout] 40 |     fn hex(&self) -> Option<Hex> {
[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] 40 |     fn hex(&self) -> Option<Hex<'_>> {
[INFO] [stdout]    |                                ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/encode.rs:51:12
[INFO] [stdout]    |
[INFO] [stdout] 51 |     fn hex(&self) -> Option<Hex> {
[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] 51 |     fn hex(&self) -> Option<Hex<'_>> {
[INFO] [stdout]    |                                ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[must_use]` has no effect when applied to provided trait methods
[INFO] [stdout]   --> src/vec.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 |     #[must_use]
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_attributes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[must_use]` has no effect when applied to provided trait methods
[INFO] [stdout]   --> src/vec.rs:30:5
[INFO] [stdout]    |
[INFO] [stdout] 30 |     #[must_use]
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[must_use]` has no effect when applied to provided trait methods
[INFO] [stdout]   --> src/vec.rs:38:5
[INFO] [stdout]    |
[INFO] [stdout] 38 |     #[must_use]
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `SliceVecDrain` is never constructed
[INFO] [stdout]    --> src/vec.rs:118:12
[INFO] [stdout]     |
[INFO] [stdout] 118 | pub struct SliceVecDrain<'p, 's, T: Default> {
[INFO] [stdout]     |            ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/lib.rs:34:23
[INFO] [stdout]    |
[INFO] [stdout] 34 | pub fn encode<T>(src: &T) -> Option<impl From<SliceVec<char>>>
[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] 34 | pub fn encode<T>(src: &T) -> Option<impl From<SliceVec<'_, char>>>
[INFO] [stdout]    |                                                        +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]  --> src/encode.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 7 |     fn hex(&self) -> Option<Hex>;
[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] 7 |     fn hex(&self) -> Option<Hex<'_>>;
[INFO] [stdout]   |                                ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/encode.rs:11:12
[INFO] [stdout]    |
[INFO] [stdout] 11 |     fn hex(&self) -> Option<Hex> {
[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] 11 |     fn hex(&self) -> Option<Hex<'_>> {
[INFO] [stdout]    |                                ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/encode.rs:23:12
[INFO] [stdout]    |
[INFO] [stdout] 23 |     fn hex(&self) -> Option<Hex> {
[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] 23 |     fn hex(&self) -> Option<Hex<'_>> {
[INFO] [stdout]    |                                ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/encode.rs:40:12
[INFO] [stdout]    |
[INFO] [stdout] 40 |     fn hex(&self) -> Option<Hex> {
[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] 40 |     fn hex(&self) -> Option<Hex<'_>> {
[INFO] [stdout]    |                                ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/encode.rs:51:12
[INFO] [stdout]    |
[INFO] [stdout] 51 |     fn hex(&self) -> Option<Hex> {
[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] 51 |     fn hex(&self) -> Option<Hex<'_>> {
[INFO] [stdout]    |                                ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.30s
[INFO] running `Command { std: "docker" "inspect" "f066a25dde2fa03b7972bb0d7e79cb94e390798563450b7a63e9c162b3ac30f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f066a25dde2fa03b7972bb0d7e79cb94e390798563450b7a63e9c162b3ac30f2", kill_on_drop: false }`
[INFO] [stdout] f066a25dde2fa03b7972bb0d7e79cb94e390798563450b7a63e9c162b3ac30f2