[INFO] fetching crate wolfram-expr 0.1.4...
[INFO] checking wolfram-expr-0.1.4 against master#8c32e313cccf7df531e2d49ffb8227bb92304aee for pr-145608-1
[INFO] extracting crate wolfram-expr 0.1.4 into /workspace/builds/worker-3-tc1/source
[INFO] started tweaking crates.io crate wolfram-expr 0.1.4
[INFO] finished tweaking crates.io crate wolfram-expr 0.1.4
[INFO] tweaked toml for crates.io crate wolfram-expr 0.1.4 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate wolfram-expr 0.1.4 on toolchain 8c32e313cccf7df531e2d49ffb8227bb92304aee
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "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" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 3 packages to latest compatible versions
[INFO] [stderr]       Adding ordered-float v3.9.2 (available: v5.0.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 272fe4317c471bb250e71749ee0720d877f08d0e4b4b160318b072cabe67bf74
[INFO] running `Command { std: "docker" "start" "-a" "272fe4317c471bb250e71749ee0720d877f08d0e4b4b160318b072cabe67bf74", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "272fe4317c471bb250e71749ee0720d877f08d0e4b4b160318b072cabe67bf74", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "272fe4317c471bb250e71749ee0720d877f08d0e4b4b160318b072cabe67bf74", kill_on_drop: false }`
[INFO] [stdout] 272fe4317c471bb250e71749ee0720d877f08d0e4b4b160318b072cabe67bf74
[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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9091d98efe953d972037b607036f026f7c96b056e060102b792b3c04f05d19ad
[INFO] running `Command { std: "docker" "start" "-a" "9091d98efe953d972037b607036f026f7c96b056e060102b792b3c04f05d19ad", kill_on_drop: false }`
[INFO] [stderr]     Checking num-traits v0.2.19
[INFO] [stderr]     Checking ordered-float v3.9.2
[INFO] [stderr]     Checking wolfram-expr v0.1.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `ExprRefCmp` is never constructed
[INFO] [stdout]   --> src/ptr_cmp.rs:37:12
[INFO] [stdout]    |
[INFO] [stdout] 37 | pub struct ExprRefCmp(pub Expr);
[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/symbol.rs:159:26
[INFO] [stdout]     |
[INFO] [stdout] 159 |     pub fn as_symbol_ref(&self) -> SymbolRef {
[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] 159 |     pub fn as_symbol_ref(&self) -> SymbolRef<'_> {
[INFO] [stdout]     |                                             ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/symbol.rs:166:20
[INFO] [stdout]     |
[INFO] [stdout] 166 |     pub fn context(&self) -> ContextRef {
[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] 166 |     pub fn context(&self) -> ContextRef<'_> {
[INFO] [stdout]     |                                        ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/symbol.rs:171:24
[INFO] [stdout]     |
[INFO] [stdout] 171 |     pub fn symbol_name(&self) -> SymbolNameRef {
[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] 171 |     pub fn symbol_name(&self) -> SymbolNameRef<'_> {
[INFO] [stdout]     |                                               ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/symbol.rs:187:31
[INFO] [stdout]     |
[INFO] [stdout] 187 |     pub fn as_symbol_name_ref(&self) -> SymbolNameRef {
[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] 187 |     pub fn as_symbol_name_ref(&self) -> SymbolNameRef<'_> {
[INFO] [stdout]     |                                                      ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/symbol.rs:267:23
[INFO] [stdout]     |
[INFO] [stdout] 267 |     pub fn components(&self) -> Vec<SymbolNameRef> {
[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] 267 |     pub fn components(&self) -> Vec<SymbolNameRef<'_>> {
[INFO] [stdout]     |                                                  ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/symbol.rs:284:27
[INFO] [stdout]     |
[INFO] [stdout] 284 |     pub fn as_context_ref(&self) -> ContextRef {
[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] 284 |     pub fn as_context_ref(&self) -> ContextRef<'_> {
[INFO] [stdout]     |                                               ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/symbol.rs:313:23
[INFO] [stdout]     |
[INFO] [stdout] 313 |     pub fn components(&self) -> Vec<SymbolNameRef> {
[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] 313 |     pub fn components(&self) -> Vec<SymbolNameRef<'_>> {
[INFO] [stdout]     |                                                  ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ExprRefCmp` is never constructed
[INFO] [stdout]   --> src/ptr_cmp.rs:37:12
[INFO] [stdout]    |
[INFO] [stdout] 37 | pub struct ExprRefCmp(pub Expr);
[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/symbol.rs:159:26
[INFO] [stdout]     |
[INFO] [stdout] 159 |     pub fn as_symbol_ref(&self) -> SymbolRef {
[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] 159 |     pub fn as_symbol_ref(&self) -> SymbolRef<'_> {
[INFO] [stdout]     |                                             ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/symbol.rs:166:20
[INFO] [stdout]     |
[INFO] [stdout] 166 |     pub fn context(&self) -> ContextRef {
[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] 166 |     pub fn context(&self) -> ContextRef<'_> {
[INFO] [stdout]     |                                        ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/symbol.rs:171:24
[INFO] [stdout]     |
[INFO] [stdout] 171 |     pub fn symbol_name(&self) -> SymbolNameRef {
[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] 171 |     pub fn symbol_name(&self) -> SymbolNameRef<'_> {
[INFO] [stdout]     |                                               ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/symbol.rs:187:31
[INFO] [stdout]     |
[INFO] [stdout] 187 |     pub fn as_symbol_name_ref(&self) -> SymbolNameRef {
[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] 187 |     pub fn as_symbol_name_ref(&self) -> SymbolNameRef<'_> {
[INFO] [stdout]     |                                                      ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/symbol.rs:267:23
[INFO] [stdout]     |
[INFO] [stdout] 267 |     pub fn components(&self) -> Vec<SymbolNameRef> {
[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] 267 |     pub fn components(&self) -> Vec<SymbolNameRef<'_>> {
[INFO] [stdout]     |                                                  ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/symbol.rs:284:27
[INFO] [stdout]     |
[INFO] [stdout] 284 |     pub fn as_context_ref(&self) -> ContextRef {
[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] 284 |     pub fn as_context_ref(&self) -> ContextRef<'_> {
[INFO] [stdout]     |                                               ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/symbol.rs:313:23
[INFO] [stdout]     |
[INFO] [stdout] 313 |     pub fn components(&self) -> Vec<SymbolNameRef> {
[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] 313 |     pub fn components(&self) -> Vec<SymbolNameRef<'_>> {
[INFO] [stdout]     |                                                  ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.87s
[INFO] running `Command { std: "docker" "inspect" "9091d98efe953d972037b607036f026f7c96b056e060102b792b3c04f05d19ad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9091d98efe953d972037b607036f026f7c96b056e060102b792b3c04f05d19ad", kill_on_drop: false }`
[INFO] [stdout] 9091d98efe953d972037b607036f026f7c96b056e060102b792b3c04f05d19ad