[INFO] fetching crate twiggy-ir 0.8.0... [INFO] building twiggy-ir-0.8.0 against master#c7f6aa2869acdbf014d094c6e427e554e160b6db for pr-146237-2 [INFO] extracting crate twiggy-ir 0.8.0 into /workspace/builds/worker-6-tc1/source [INFO] started tweaking crates.io crate twiggy-ir 0.8.0 [INFO] finished tweaking crates.io crate twiggy-ir 0.8.0 [INFO] tweaked toml for crates.io crate twiggy-ir 0.8.0 written to /workspace/builds/worker-6-tc1/source/Cargo.toml [INFO] validating manifest of crates.io crate twiggy-ir 0.8.0 on toolchain c7f6aa2869acdbf014d094c6e427e554e160b6db [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate crates.io crate twiggy-ir 0.8.0 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" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded frozen v1.0.0 [INFO] [stderr] Downloaded fixedbitset v0.4.1 [INFO] [stderr] Downloaded cpp_demangle v0.3.5 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 44612d84b4aa3bafdbe41b68a4f2ad4706b1063c3e3f07345534ed40bb26ed70 [INFO] running `Command { std: "docker" "start" "-a" "44612d84b4aa3bafdbe41b68a4f2ad4706b1063c3e3f07345534ed40bb26ed70", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "44612d84b4aa3bafdbe41b68a4f2ad4706b1063c3e3f07345534ed40bb26ed70", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "44612d84b4aa3bafdbe41b68a4f2ad4706b1063c3e3f07345534ed40bb26ed70", kill_on_drop: false }` [INFO] [stdout] 44612d84b4aa3bafdbe41b68a4f2ad4706b1063c3e3f07345534ed40bb26ed70 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 0e9951dee1f599f70350324e2c4ae8d2a9692178eccfdf9785e4d1f94486ab4d [INFO] running `Command { std: "docker" "start" "-a" "0e9951dee1f599f70350324e2c4ae8d2a9692178eccfdf9785e4d1f94486ab4d", kill_on_drop: false }` [INFO] [stderr] Compiling proc-macro2 v1.0.94 [INFO] [stderr] Compiling serde v1.0.219 [INFO] [stderr] Compiling hashbrown v0.11.2 [INFO] [stderr] Compiling cpp_demangle v0.3.5 [INFO] [stderr] Compiling fixedbitset v0.4.1 [INFO] [stderr] Compiling rustc-demangle v0.1.21 [INFO] [stderr] Compiling frozen v1.0.0 [INFO] [stderr] Compiling indexmap v1.8.2 [INFO] [stderr] Compiling quote v1.0.40 [INFO] [stderr] Compiling syn v2.0.101 [INFO] [stderr] Compiling petgraph v0.6.2 [INFO] [stderr] Compiling serde_derive v1.0.219 [INFO] [stderr] Compiling twiggy-ir v0.8.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: field `roots` is never read [INFO] [stdout] --> ir.rs:148:5 [INFO] [stdout] | [INFO] [stdout] 140 | pub struct Items { [INFO] [stdout] | ----- field in this struct [INFO] [stdout] ... [INFO] [stdout] 148 | roots: Frozen>, [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Items` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [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] --> ir.rs:162:17 [INFO] [stdout] | [INFO] [stdout] 162 | pub fn iter(&self) -> Iter { [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] 162 | pub fn iter(&self) -> Iter<'_> { [INFO] [stdout] | ++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> ir.rs:169:22 [INFO] [stdout] | [INFO] [stdout] 169 | pub fn neighbors(&self, id: Id) -> Neighbors { [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] 169 | pub fn neighbors(&self, id: Id) -> Neighbors<'_> { [INFO] [stdout] | ++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> ir.rs:179:25 [INFO] [stdout] | [INFO] [stdout] 179 | pub fn predecessors(&self, id: Id) -> Predecessors { [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] 179 | pub fn predecessors(&self, id: Id) -> Predecessors<'_> { [INFO] [stdout] | ++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 14.23s [INFO] running `Command { std: "docker" "inspect" "0e9951dee1f599f70350324e2c4ae8d2a9692178eccfdf9785e4d1f94486ab4d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "0e9951dee1f599f70350324e2c4ae8d2a9692178eccfdf9785e4d1f94486ab4d", kill_on_drop: false }` [INFO] [stdout] 0e9951dee1f599f70350324e2c4ae8d2a9692178eccfdf9785e4d1f94486ab4d [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 129d222ba25bbe778c94d785a807410c0e9ec747405b4f36675ea92783c8df6e [INFO] running `Command { std: "docker" "start" "-a" "129d222ba25bbe778c94d785a807410c0e9ec747405b4f36675ea92783c8df6e", kill_on_drop: false }` [INFO] [stderr] Compiling twiggy-ir v0.8.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: field `roots` is never read [INFO] [stdout] --> ir.rs:148:5 [INFO] [stdout] | [INFO] [stdout] 140 | pub struct Items { [INFO] [stdout] | ----- field in this struct [INFO] [stdout] ... [INFO] [stdout] 148 | roots: Frozen>, [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Items` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [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] --> ir.rs:162:17 [INFO] [stdout] | [INFO] [stdout] 162 | pub fn iter(&self) -> Iter { [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] 162 | pub fn iter(&self) -> Iter<'_> { [INFO] [stdout] | ++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> ir.rs:169:22 [INFO] [stdout] | [INFO] [stdout] 169 | pub fn neighbors(&self, id: Id) -> Neighbors { [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] 169 | pub fn neighbors(&self, id: Id) -> Neighbors<'_> { [INFO] [stdout] | ++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> ir.rs:179:25 [INFO] [stdout] | [INFO] [stdout] 179 | pub fn predecessors(&self, id: Id) -> Predecessors { [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] 179 | pub fn predecessors(&self, id: Id) -> Predecessors<'_> { [INFO] [stdout] | ++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `roots` is never read [INFO] [stdout] --> ir.rs:148:5 [INFO] [stdout] | [INFO] [stdout] 140 | pub struct Items { [INFO] [stdout] | ----- field in this struct [INFO] [stdout] ... [INFO] [stdout] 148 | roots: Frozen>, [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Items` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [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] --> ir.rs:162:17 [INFO] [stdout] | [INFO] [stdout] 162 | pub fn iter(&self) -> Iter { [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] 162 | pub fn iter(&self) -> Iter<'_> { [INFO] [stdout] | ++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> ir.rs:169:22 [INFO] [stdout] | [INFO] [stdout] 169 | pub fn neighbors(&self, id: Id) -> Neighbors { [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] 169 | pub fn neighbors(&self, id: Id) -> Neighbors<'_> { [INFO] [stdout] | ++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> ir.rs:179:25 [INFO] [stdout] | [INFO] [stdout] 179 | pub fn predecessors(&self, id: Id) -> Predecessors { [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] 179 | pub fn predecessors(&self, id: Id) -> Predecessors<'_> { [INFO] [stdout] | ++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 0.94s [INFO] running `Command { std: "docker" "inspect" "129d222ba25bbe778c94d785a807410c0e9ec747405b4f36675ea92783c8df6e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "129d222ba25bbe778c94d785a807410c0e9ec747405b4f36675ea92783c8df6e", kill_on_drop: false }` [INFO] [stdout] 129d222ba25bbe778c94d785a807410c0e9ec747405b4f36675ea92783c8df6e