[INFO] fetching crate chandeliers-san 1.0.0...
[INFO] checking chandeliers-san-1.0.0 against try#012cd62c9add58ab3910e44c137d87db3ab70f61 for pr-155915
[INFO] extracting crate chandeliers-san 1.0.0 into /workspace/builds/worker-7-tc2/source
[INFO] started tweaking crates.io crate chandeliers-san 1.0.0
[INFO] finished tweaking crates.io crate chandeliers-san 1.0.0
[INFO] tweaked toml for crates.io crate chandeliers-san 1.0.0 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate chandeliers-san 1.0.0 on toolchain 012cd62c9add58ab3910e44c137d87db3ab70f61
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+012cd62c9add58ab3910e44c137d87db3ab70f61" "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" "+012cd62c9add58ab3910e44c137d87db3ab70f61" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 7 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+012cd62c9add58ab3910e44c137d87db3ab70f61" "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-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+012cd62c9add58ab3910e44c137d87db3ab70f61" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c8bd9b7053ee4b6b33457f00832a080daca61804645a696fb543443293c7f553
[INFO] running `Command { std: "docker" "start" "-a" "c8bd9b7053ee4b6b33457f00832a080daca61804645a696fb543443293c7f553", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c8bd9b7053ee4b6b33457f00832a080daca61804645a696fb543443293c7f553", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c8bd9b7053ee4b6b33457f00832a080daca61804645a696fb543443293c7f553", kill_on_drop: false }`
[INFO] [stdout] c8bd9b7053ee4b6b33457f00832a080daca61804645a696fb543443293c7f553
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+012cd62c9add58ab3910e44c137d87db3ab70f61" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 688f4436c3d39d534002d127052d90fba00ba26750fbf748e734b49192f4fcc5
[INFO] running `Command { std: "docker" "start" "-a" "688f4436c3d39d534002d127052d90fba00ba26750fbf748e734b49192f4fcc5", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.106
[INFO] [stderr]     Checking unicode-ident v1.0.24
[INFO] [stderr]     Checking replace_with v0.1.8
[INFO] [stderr]    Compiling quote v1.0.45
[INFO] [stderr]     Checking chandeliers-sem v1.0.0
[INFO] [stderr]     Checking chandeliers-err v1.0.0
[INFO] [stderr]     Checking syn v2.0.117
[INFO] [stderr]     Checking chandeliers-san v1.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the feature `lint_reasons` has been stable since 1.81.0 and no longer requires an attribute to enable
[INFO] [stdout]   --> src/lib.rs:57:12
[INFO] [stdout]    |
[INFO] [stdout] 57 | #![feature(lint_reasons)]
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[must_use]` attribute cannot be used on trait methods in impl blocks
[INFO] [stdout]     --> src/typecheck.rs:1247:5
[INFO] [stdout]      |
[INFO] [stdout] 1247 |     #[must_use]
[INFO] [stdout]      |     ^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]      = help: `#[must_use]` can be applied to data types, foreign functions, functions, inherent methods, provided trait methods, required trait methods, and traits
[INFO] [stdout]      = note: `#[warn(unused_attributes)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[must_use]` attribute cannot be used on trait methods in impl blocks
[INFO] [stdout]     --> src/typecheck.rs:1385:5
[INFO] [stdout]      |
[INFO] [stdout] 1385 |     #[must_use]
[INFO] [stdout]      |     ^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]      = help: `#[must_use]` can be applied to data types, foreign functions, functions, inherent methods, provided trait methods, required trait methods, and traits
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[must_use]` attribute cannot be used on trait methods in impl blocks
[INFO] [stdout]     --> src/typecheck.rs:1459:5
[INFO] [stdout]      |
[INFO] [stdout] 1459 |     #[must_use]
[INFO] [stdout]      |     ^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]      = help: `#[must_use]` can be applied to data types, foreign functions, functions, inherent methods, provided trait methods, required trait methods, and traits
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[must_use]` attribute cannot be used on trait methods in impl blocks
[INFO] [stdout]     --> src/typecheck.rs:1478:5
[INFO] [stdout]      |
[INFO] [stdout] 1478 |     #[must_use]
[INFO] [stdout]      |     ^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]      = help: `#[must_use]` can be applied to data types, foreign functions, functions, inherent methods, provided trait methods, required trait methods, and traits
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `lint_reasons` has been stable since 1.81.0 and no longer requires an attribute to enable
[INFO] [stdout]   --> src/lib.rs:57:12
[INFO] [stdout]    |
[INFO] [stdout] 57 | #![feature(lint_reasons)]
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[must_use]` attribute cannot be used on trait methods in impl blocks
[INFO] [stdout]     --> src/typecheck.rs:1247:5
[INFO] [stdout]      |
[INFO] [stdout] 1247 |     #[must_use]
[INFO] [stdout]      |     ^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]      = help: `#[must_use]` can be applied to data types, foreign functions, functions, inherent methods, provided trait methods, required trait methods, and traits
[INFO] [stdout]      = note: `#[warn(unused_attributes)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[must_use]` attribute cannot be used on trait methods in impl blocks
[INFO] [stdout]     --> src/typecheck.rs:1385:5
[INFO] [stdout]      |
[INFO] [stdout] 1385 |     #[must_use]
[INFO] [stdout]      |     ^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]      = help: `#[must_use]` can be applied to data types, foreign functions, functions, inherent methods, provided trait methods, required trait methods, and traits
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[must_use]` attribute cannot be used on trait methods in impl blocks
[INFO] [stdout]     --> src/typecheck.rs:1459:5
[INFO] [stdout]      |
[INFO] [stdout] 1459 |     #[must_use]
[INFO] [stdout]      |     ^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]      = help: `#[must_use]` can be applied to data types, foreign functions, functions, inherent methods, provided trait methods, required trait methods, and traits
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[must_use]` attribute cannot be used on trait methods in impl blocks
[INFO] [stdout]     --> src/typecheck.rs:1478:5
[INFO] [stdout]      |
[INFO] [stdout] 1478 |     #[must_use]
[INFO] [stdout]      |     ^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]      = help: `#[must_use]` can be applied to data types, foreign functions, functions, inherent methods, provided trait methods, required trait methods, and traits
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `UnitIdx` is never constructed
[INFO] [stdout]   --> src/causality/graph.rs:89:8
[INFO] [stdout]    |
[INFO] [stdout] 89 | struct UnitIdx(usize);
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ObjIdx` is never constructed
[INFO] [stdout]   --> src/causality/graph.rs:96:8
[INFO] [stdout]    |
[INFO] [stdout] 96 | struct ObjIdx(usize);
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `UnitIdx` is never constructed
[INFO] [stdout]   --> src/causality/graph.rs:89:8
[INFO] [stdout]    |
[INFO] [stdout] 89 | struct UnitIdx(usize);
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ObjIdx` is never constructed
[INFO] [stdout]   --> src/causality/graph.rs:96:8
[INFO] [stdout]    |
[INFO] [stdout] 96 | struct ObjIdx(usize);
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.68s
[INFO] running `Command { std: "docker" "inspect" "688f4436c3d39d534002d127052d90fba00ba26750fbf748e734b49192f4fcc5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "688f4436c3d39d534002d127052d90fba00ba26750fbf748e734b49192f4fcc5", kill_on_drop: false }`
[INFO] [stdout] 688f4436c3d39d534002d127052d90fba00ba26750fbf748e734b49192f4fcc5