[INFO] fetching crate nightly-quirks 0.1.5...
[INFO] testing nightly-quirks-0.1.5 against try#c2e32f1c9652b13ed99608599c1e855462f421f3 for pr-146098-8
[INFO] extracting crate nightly-quirks 0.1.5 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate nightly-quirks 0.1.5
[INFO] finished tweaking crates.io crate nightly-quirks 0.1.5
[INFO] tweaked toml for crates.io crate nightly-quirks 0.1.5 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate nightly-quirks 0.1.5 on toolchain c2e32f1c9652b13ed99608599c1e855462f421f3
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "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" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 10 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f8078c70a759b5ae03c4ef0a39b9302161c6dc284563708bce59d0f19fa6a4c8
[INFO] running `Command { std: "docker" "start" "-a" "f8078c70a759b5ae03c4ef0a39b9302161c6dc284563708bce59d0f19fa6a4c8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f8078c70a759b5ae03c4ef0a39b9302161c6dc284563708bce59d0f19fa6a4c8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f8078c70a759b5ae03c4ef0a39b9302161c6dc284563708bce59d0f19fa6a4c8", kill_on_drop: false }`
[INFO] [stdout] f8078c70a759b5ae03c4ef0a39b9302161c6dc284563708bce59d0f19fa6a4c8
[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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4e2fc7a5fdc2d5b9a0d3af077be9708a53d47bea550b37133f9c8059166075bc
[INFO] running `Command { std: "docker" "start" "-a" "4e2fc7a5fdc2d5b9a0d3af077be9708a53d47bea550b37133f9c8059166075bc", kill_on_drop: false }`
[INFO] [stderr]    Compiling nightly-quirks v0.1.5 (/opt/rustwide/workdir)
[INFO] [stdout] error: `#[must_use]` attribute cannot be used on trait methods in impl blocks
[INFO] [stdout]   --> src/int_roundings.rs:8:13
[INFO] [stdout]    |
[INFO] [stdout]  8 | /             #[must_use = "this returns the result of the operation, \
[INFO] [stdout]  9 | |             without modifying the original"]
[INFO] [stdout]    | |____________________________________________^
[INFO] [stdout] ...
[INFO] [stdout] 24 |   int_roundings!(u8);
[INFO] [stdout]    |   ------------------ in this macro invocation
[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, traits, and unions
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]   --> src/lib.rs:1:36
[INFO] [stdout]    |
[INFO] [stdout]  1 | #![cfg_attr(debug_assertions, deny(warnings))]
[INFO] [stdout]    |                                    ^^^^^^^^
[INFO] [stdout]    = note: `#[deny(unused_attributes)]` implied by `#[deny(warnings)]`
[INFO] [stdout]    = note: this error originates in the macro `int_roundings` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `#[must_use]` attribute cannot be used on trait methods in impl blocks
[INFO] [stdout]   --> src/int_roundings.rs:8:13
[INFO] [stdout]    |
[INFO] [stdout]  8 | /             #[must_use = "this returns the result of the operation, \
[INFO] [stdout]  9 | |             without modifying the original"]
[INFO] [stdout]    | |____________________________________________^
[INFO] [stdout] ...
[INFO] [stdout] 25 |   int_roundings!(i8);
[INFO] [stdout]    |   ------------------ in this macro invocation
[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, traits, and unions
[INFO] [stdout]    = note: this error originates in the macro `int_roundings` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `#[must_use]` attribute cannot be used on trait methods in impl blocks
[INFO] [stdout]   --> src/int_roundings.rs:8:13
[INFO] [stdout]    |
[INFO] [stdout]  8 | /             #[must_use = "this returns the result of the operation, \
[INFO] [stdout]  9 | |             without modifying the original"]
[INFO] [stdout]    | |____________________________________________^
[INFO] [stdout] ...
[INFO] [stdout] 26 |   int_roundings!(u16);
[INFO] [stdout]    |   ------------------- in this macro invocation
[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, traits, and unions
[INFO] [stdout]    = note: this error originates in the macro `int_roundings` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `#[must_use]` attribute cannot be used on trait methods in impl blocks
[INFO] [stdout]   --> src/int_roundings.rs:8:13
[INFO] [stdout]    |
[INFO] [stdout]  8 | /             #[must_use = "this returns the result of the operation, \
[INFO] [stdout]  9 | |             without modifying the original"]
[INFO] [stdout]    | |____________________________________________^
[INFO] [stdout] ...
[INFO] [stdout] 27 |   int_roundings!(i16);
[INFO] [stdout]    |   ------------------- in this macro invocation
[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, traits, and unions
[INFO] [stdout]    = note: this error originates in the macro `int_roundings` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `#[must_use]` attribute cannot be used on trait methods in impl blocks
[INFO] [stdout]   --> src/int_roundings.rs:8:13
[INFO] [stdout]    |
[INFO] [stdout]  8 | /             #[must_use = "this returns the result of the operation, \
[INFO] [stdout]  9 | |             without modifying the original"]
[INFO] [stdout]    | |____________________________________________^
[INFO] [stdout] ...
[INFO] [stdout] 28 |   int_roundings!(u32);
[INFO] [stdout]    |   ------------------- in this macro invocation
[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, traits, and unions
[INFO] [stdout]    = note: this error originates in the macro `int_roundings` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `#[must_use]` attribute cannot be used on trait methods in impl blocks
[INFO] [stdout]   --> src/int_roundings.rs:8:13
[INFO] [stdout]    |
[INFO] [stdout]  8 | /             #[must_use = "this returns the result of the operation, \
[INFO] [stdout]  9 | |             without modifying the original"]
[INFO] [stdout]    | |____________________________________________^
[INFO] [stdout] ...
[INFO] [stdout] 29 |   int_roundings!(i32);
[INFO] [stdout]    |   ------------------- in this macro invocation
[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, traits, and unions
[INFO] [stdout]    = note: this error originates in the macro `int_roundings` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `#[must_use]` attribute cannot be used on trait methods in impl blocks
[INFO] [stdout]   --> src/int_roundings.rs:8:13
[INFO] [stdout]    |
[INFO] [stdout]  8 | /             #[must_use = "this returns the result of the operation, \
[INFO] [stdout]  9 | |             without modifying the original"]
[INFO] [stdout]    | |____________________________________________^
[INFO] [stdout] ...
[INFO] [stdout] 30 |   int_roundings!(u64);
[INFO] [stdout]    |   ------------------- in this macro invocation
[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, traits, and unions
[INFO] [stdout]    = note: this error originates in the macro `int_roundings` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `#[must_use]` attribute cannot be used on trait methods in impl blocks
[INFO] [stdout]   --> src/int_roundings.rs:8:13
[INFO] [stdout]    |
[INFO] [stdout]  8 | /             #[must_use = "this returns the result of the operation, \
[INFO] [stdout]  9 | |             without modifying the original"]
[INFO] [stdout]    | |____________________________________________^
[INFO] [stdout] ...
[INFO] [stdout] 31 |   int_roundings!(i64);
[INFO] [stdout]    |   ------------------- in this macro invocation
[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, traits, and unions
[INFO] [stdout]    = note: this error originates in the macro `int_roundings` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `#[must_use]` attribute cannot be used on trait methods in impl blocks
[INFO] [stdout]   --> src/int_roundings.rs:8:13
[INFO] [stdout]    |
[INFO] [stdout]  8 | /             #[must_use = "this returns the result of the operation, \
[INFO] [stdout]  9 | |             without modifying the original"]
[INFO] [stdout]    | |____________________________________________^
[INFO] [stdout] ...
[INFO] [stdout] 32 |   int_roundings!(u128);
[INFO] [stdout]    |   -------------------- in this macro invocation
[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, traits, and unions
[INFO] [stdout]    = note: this error originates in the macro `int_roundings` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `#[must_use]` attribute cannot be used on trait methods in impl blocks
[INFO] [stdout]   --> src/int_roundings.rs:8:13
[INFO] [stdout]    |
[INFO] [stdout]  8 | /             #[must_use = "this returns the result of the operation, \
[INFO] [stdout]  9 | |             without modifying the original"]
[INFO] [stdout]    | |____________________________________________^
[INFO] [stdout] ...
[INFO] [stdout] 33 |   int_roundings!(i128);
[INFO] [stdout]    |   -------------------- in this macro invocation
[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, traits, and unions
[INFO] [stdout]    = note: this error originates in the macro `int_roundings` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `nightly-quirks` (lib) due to 10 previous errors
[INFO] running `Command { std: "docker" "inspect" "4e2fc7a5fdc2d5b9a0d3af077be9708a53d47bea550b37133f9c8059166075bc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4e2fc7a5fdc2d5b9a0d3af077be9708a53d47bea550b37133f9c8059166075bc", kill_on_drop: false }`
[INFO] [stdout] 4e2fc7a5fdc2d5b9a0d3af077be9708a53d47bea550b37133f9c8059166075bc