[INFO] fetching crate gluon_base 0.17.2... [INFO] checking gluon_base-0.17.2 against try#39e1293fce4b650061e85dda88aa428f726a8444 for pr-88041 [INFO] extracting crate gluon_base 0.17.2 into /workspace/builds/worker-92/source [INFO] validating manifest of crates.io crate gluon_base 0.17.2 on toolchain 39e1293fce4b650061e85dda88aa428f726a8444 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+39e1293fce4b650061e85dda88aa428f726a8444" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking crates.io crate gluon_base 0.17.2 [INFO] finished tweaking crates.io crate gluon_base 0.17.2 [INFO] tweaked toml for crates.io crate gluon_base 0.17.2 written to /workspace/builds/worker-92/source/Cargo.toml [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+39e1293fce4b650061e85dda88aa428f726a8444" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+39e1293fce4b650061e85dda88aa428f726a8444" "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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-92/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-92/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+39e1293fce4b650061e85dda88aa428f726a8444" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 8321b8d4209cc194a95c71f1b2f2fd8bc295346c713358add3b20b9e77ef5b2a [INFO] running `Command { std: "docker" "start" "-a" "8321b8d4209cc194a95c71f1b2f2fd8bc295346c713358add3b20b9e77ef5b2a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "8321b8d4209cc194a95c71f1b2f2fd8bc295346c713358add3b20b9e77ef5b2a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "8321b8d4209cc194a95c71f1b2f2fd8bc295346c713358add3b20b9e77ef5b2a", kill_on_drop: false }` [INFO] [stdout] 8321b8d4209cc194a95c71f1b2f2fd8bc295346c713358add3b20b9e77ef5b2a [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-92/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-92/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+39e1293fce4b650061e85dda88aa428f726a8444" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 93c71e04895017cfe9ebab249a1f5f2715e5c36bf3a7d119c1728345be38f413 [INFO] running `Command { std: "docker" "start" "-a" "93c71e04895017cfe9ebab249a1f5f2715e5c36bf3a7d119c1728345be38f413", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Compiling autocfg v1.0.1 [INFO] [stderr] Compiling proc-macro2 v1.0.28 [INFO] [stderr] Compiling unicode-xid v0.2.2 [INFO] [stderr] Compiling syn v1.0.74 [INFO] [stderr] Compiling log v0.4.14 [INFO] [stderr] Compiling libc v0.2.99 [INFO] [stderr] Checking cfg-if v1.0.0 [INFO] [stderr] Checking typed-arena v2.0.1 [INFO] [stderr] Checking arrayvec v0.5.2 [INFO] [stderr] Checking either v1.6.1 [INFO] [stderr] Checking ahash v0.3.8 [INFO] [stderr] Checking difference v2.0.0 [INFO] [stderr] Checking collect-mac v0.1.0 [INFO] [stderr] Checking bitflags v1.3.1 [INFO] [stderr] Checking smallvec v1.6.1 [INFO] [stderr] Checking codespan-reporting v0.9.5 [INFO] [stderr] Checking aho-corasick v0.7.18 [INFO] [stderr] Checking pretty_assertions v0.6.1 [INFO] [stderr] Checking itertools v0.9.0 [INFO] [stderr] Checking pretty v0.10.0 [INFO] [stderr] Compiling num-traits v0.2.14 [INFO] [stderr] Compiling hashbrown v0.8.2 [INFO] [stderr] Checking codespan v0.9.5 [INFO] [stderr] Compiling quote v1.0.9 [INFO] [stderr] Checking regex v1.5.4 [INFO] [stderr] Checking atty v0.2.14 [INFO] [stderr] Checking env_logger v0.7.1 [INFO] [stderr] Checking ordered-float v2.7.0 [INFO] [stderr] Compiling gluon_codegen v0.17.2 [INFO] [stderr] Checking gluon_base v0.17.2 (/opt/rustwide/workdir) [INFO] [stdout] warning: an associated function with this name may be added to the standard library in the future [INFO] [stdout] --> src/types/mod.rs:2793:22 [INFO] [stdout] | [INFO] [stdout] 2793 | .intersperse(arena.text(".")), [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unstable_name_collisions)]` on by default [INFO] [stdout] = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior! [INFO] [stdout] = note: for more information, see issue #48919 [INFO] [stdout] = help: call with fully qualified syntax `itertools::Itertools::intersperse(...)` to keep using the current method [INFO] [stdout] = help: add `#![feature(iter_intersperse)]` to the crate attributes to enable `std::iter::Iterator::intersperse` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: an associated function with this name may be added to the standard library in the future [INFO] [stdout] --> src/types/mod.rs:2793:22 [INFO] [stdout] | [INFO] [stdout] 2793 | .intersperse(arena.text(".")), [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unstable_name_collisions)]` on by default [INFO] [stdout] = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior! [INFO] [stdout] = note: for more information, see issue #48919 [INFO] [stdout] = help: call with fully qualified syntax `itertools::Itertools::intersperse(...)` to keep using the current method [INFO] [stdout] = help: add `#![feature(iter_intersperse)]` to the crate attributes to enable `std::iter::Iterator::intersperse` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused borrow that must be used [INFO] [stdout] --> src/types/flags.rs:77:17 [INFO] [stdout] | [INFO] [stdout] 77 | / &mut FlagsVisitor(Flags::HAS_GENERICS, |typ: &T| match &**typ { [INFO] [stdout] 78 | | Type::Generic(gen) => { [INFO] [stdout] 79 | | unbound_generic |= params.iter().all(|param| param.id != gen.id) [INFO] [stdout] 80 | | } [INFO] [stdout] 81 | | _ => (), [INFO] [stdout] 82 | | }) [INFO] [stdout] 83 | | .walk(typ); [INFO] [stdout] | |__________________________^ the borrow produces a value [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 77 | let _ = &mut FlagsVisitor(Flags::HAS_GENERICS, |typ: &T| match &**typ { [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused borrow that must be used [INFO] [stdout] --> src/types/flags.rs:77:17 [INFO] [stdout] | [INFO] [stdout] 77 | / &mut FlagsVisitor(Flags::HAS_GENERICS, |typ: &T| match &**typ { [INFO] [stdout] 78 | | Type::Generic(gen) => { [INFO] [stdout] 79 | | unbound_generic |= params.iter().all(|param| param.id != gen.id) [INFO] [stdout] 80 | | } [INFO] [stdout] 81 | | _ => (), [INFO] [stdout] 82 | | }) [INFO] [stdout] 83 | | .walk(typ); [INFO] [stdout] | |__________________________^ the borrow produces a value [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 77 | let _ = &mut FlagsVisitor(Flags::HAS_GENERICS, |typ: &T| match &**typ { [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 30.96s [INFO] running `Command { std: "docker" "inspect" "93c71e04895017cfe9ebab249a1f5f2715e5c36bf3a7d119c1728345be38f413", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "93c71e04895017cfe9ebab249a1f5f2715e5c36bf3a7d119c1728345be38f413", kill_on_drop: false }` [INFO] [stdout] 93c71e04895017cfe9ebab249a1f5f2715e5c36bf3a7d119c1728345be38f413