[INFO] fetching crate viffy 0.1.5...
[INFO] checking viffy-0.1.5 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate viffy 0.1.5 into /workspace/builds/worker-2-tc2/source
[INFO] started tweaking crates.io crate viffy 0.1.5
[INFO] finished tweaking crates.io crate viffy 0.1.5
[INFO] tweaked toml for crates.io crate viffy 0.1.5 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate viffy 0.1.5 on toolchain 4f260f0f20b3133d20cfb50353c0221943af5796
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate viffy 0.1.5 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" "+4f260f0f20b3133d20cfb50353c0221943af5796" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3ffbf00fd3fa7912503e9b181f9b93de53142898a73830c0f357e315507c9265
[INFO] running `Command { std: "docker" "start" "-a" "3ffbf00fd3fa7912503e9b181f9b93de53142898a73830c0f357e315507c9265", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3ffbf00fd3fa7912503e9b181f9b93de53142898a73830c0f357e315507c9265", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3ffbf00fd3fa7912503e9b181f9b93de53142898a73830c0f357e315507c9265", kill_on_drop: false }`
[INFO] [stdout] 3ffbf00fd3fa7912503e9b181f9b93de53142898a73830c0f357e315507c9265
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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 -Dunmustuse_in_always_ok" "-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" "+4f260f0f20b3133d20cfb50353c0221943af5796" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ef03b492f36b3c919cdbf6f8a70dfe3e02ff2770ec90518e1f4ad35092c8e8af
[INFO] running `Command { std: "docker" "start" "-a" "ef03b492f36b3c919cdbf6f8a70dfe3e02ff2770ec90518e1f4ad35092c8e8af", kill_on_drop: false }`
[INFO] [stderr]     Checking rayon v1.10.0
[INFO] [stderr]     Checking viffy v0.1.5 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::cell::RefCell`
[INFO] [stdout]  --> src/test.rs:4:6
[INFO] [stdout]   |
[INFO] [stdout] 4 |     use std::cell::RefCell;
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::rc::Rc`
[INFO] [stdout]  --> src/test.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |     use std::rc::Rc;
[INFO] [stdout]   |         ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]    --> src/math.rs:306:2
[INFO] [stdout]     |
[INFO] [stdout] 306 |     unsafe {
[INFO] [stdout]     |     ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_unsafe)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]    --> src/math.rs:306:2
[INFO] [stdout]     |
[INFO] [stdout] 306 |     unsafe {
[INFO] [stdout]     |     ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_unsafe)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/serializer.rs:235:7
[INFO] [stdout]     |
[INFO] [stdout] 235 |         for i in 0..(len_16 as usize) {
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/serializer.rs:256:7
[INFO] [stdout]     |
[INFO] [stdout] 256 |         for i in 0..(len_16 as usize) {
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/serializer.rs:235:7
[INFO] [stdout]     |
[INFO] [stdout] 235 |         for i in 0..(len_16 as usize) {
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/serializer.rs:256:7
[INFO] [stdout]     |
[INFO] [stdout] 256 |         for i in 0..(len_16 as usize) {
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `floor` is never used
[INFO] [stdout]    --> src/math.rs:291:4
[INFO] [stdout]     |
[INFO] [stdout] 291 | fn floor(x: f32) -> f32 {
[INFO] [stdout]     |    ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `sin` is never used
[INFO] [stdout]    --> src/math.rs:297:4
[INFO] [stdout]     |
[INFO] [stdout] 297 | fn sin(mut x: f32) -> f32 {
[INFO] [stdout]     |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `from_memory` is never used
[INFO] [stdout]   --> src/generator.rs:59:9
[INFO] [stdout]    |
[INFO] [stdout] 16 | impl<'a> LexerState<'a> {
[INFO] [stdout]    | ----------------------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 59 |     pub fn from_memory(data: &'a str) -> Self {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `MAX_SCRATCH_SPACE` is never used
[INFO] [stdout]  --> src/serializer.rs:2:7
[INFO] [stdout]   |
[INFO] [stdout] 2 | const MAX_SCRATCH_SPACE: usize = 1 << 28; // 256 MiB
[INFO] [stdout]   |       ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `floor` is never used
[INFO] [stdout]    --> src/math.rs:291:4
[INFO] [stdout]     |
[INFO] [stdout] 291 | fn floor(x: f32) -> f32 {
[INFO] [stdout]     |    ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `sin` is never used
[INFO] [stdout]    --> src/math.rs:297:4
[INFO] [stdout]     |
[INFO] [stdout] 297 | fn sin(mut x: f32) -> f32 {
[INFO] [stdout]     |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `from_memory` is never used
[INFO] [stdout]   --> src/generator.rs:59:9
[INFO] [stdout]    |
[INFO] [stdout] 16 | impl<'a> LexerState<'a> {
[INFO] [stdout]    | ----------------------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 59 |     pub fn from_memory(data: &'a str) -> Self {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]    --> src/generator.rs:195:4
[INFO] [stdout]     |
[INFO] [stdout] 195 |             String::from_str("global").unwrap()
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `MAX_SCRATCH_SPACE` is never used
[INFO] [stdout]  --> src/serializer.rs:2:7
[INFO] [stdout]   |
[INFO] [stdout] 2 | const MAX_SCRATCH_SPACE: usize = 1 << 28; // 256 MiB
[INFO] [stdout]   |       ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Option::<T>::insert` that must be used
[INFO] [stdout]   --> src/serializer.rs:93:13
[INFO] [stdout]    |
[INFO] [stdout] 93 |             self.insert(data);
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: if you intended to set a value, consider assignment instead
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 93 |             let _ = self.insert(data);
[INFO] [stdout]    |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]    --> src/generator.rs:195:4
[INFO] [stdout]     |
[INFO] [stdout] 195 |             String::from_str("global").unwrap()
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `A` should have a snake case name
[INFO] [stdout]    --> src/vector.rs:331:30
[INFO] [stdout]     |
[INFO] [stdout] 331 | impl_compose_tuple_unpacker!(A B C D E);
[INFO] [stdout]     |                              ^ help: convert the identifier to snake case: `a`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `B` should have a snake case name
[INFO] [stdout]    --> src/vector.rs:331:32
[INFO] [stdout]     |
[INFO] [stdout] 331 | impl_compose_tuple_unpacker!(A B C D E);
[INFO] [stdout]     |                                ^ help: convert the identifier to snake case: `b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `C` should have a snake case name
[INFO] [stdout]    --> src/vector.rs:331:34
[INFO] [stdout]     |
[INFO] [stdout] 331 | impl_compose_tuple_unpacker!(A B C D E);
[INFO] [stdout]     |                                  ^ help: convert the identifier to snake case (notice the capitalization): `c`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `D` should have a snake case name
[INFO] [stdout]    --> src/vector.rs:331:36
[INFO] [stdout]     |
[INFO] [stdout] 331 | impl_compose_tuple_unpacker!(A B C D E);
[INFO] [stdout]     |                                    ^ help: convert the identifier to snake case: `d`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `E` should have a snake case name
[INFO] [stdout]    --> src/vector.rs:331:38
[INFO] [stdout]     |
[INFO] [stdout] 331 | impl_compose_tuple_unpacker!(A B C D E);
[INFO] [stdout]     |                                      ^ help: convert the identifier to snake case: `e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Option::<T>::insert` that must be used
[INFO] [stdout]   --> src/serializer.rs:93:13
[INFO] [stdout]    |
[INFO] [stdout] 93 |             self.insert(data);
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: if you intended to set a value, consider assignment instead
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 93 |             let _ = self.insert(data);
[INFO] [stdout]    |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `A` should have a snake case name
[INFO] [stdout]    --> src/vector.rs:331:30
[INFO] [stdout]     |
[INFO] [stdout] 331 | impl_compose_tuple_unpacker!(A B C D E);
[INFO] [stdout]     |                              ^ help: convert the identifier to snake case: `a`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `B` should have a snake case name
[INFO] [stdout]    --> src/vector.rs:331:32
[INFO] [stdout]     |
[INFO] [stdout] 331 | impl_compose_tuple_unpacker!(A B C D E);
[INFO] [stdout]     |                                ^ help: convert the identifier to snake case: `b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `C` should have a snake case name
[INFO] [stdout]    --> src/vector.rs:331:34
[INFO] [stdout]     |
[INFO] [stdout] 331 | impl_compose_tuple_unpacker!(A B C D E);
[INFO] [stdout]     |                                  ^ help: convert the identifier to snake case (notice the capitalization): `c`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `D` should have a snake case name
[INFO] [stdout]    --> src/vector.rs:331:36
[INFO] [stdout]     |
[INFO] [stdout] 331 | impl_compose_tuple_unpacker!(A B C D E);
[INFO] [stdout]     |                                    ^ help: convert the identifier to snake case: `d`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `E` should have a snake case name
[INFO] [stdout]    --> src/vector.rs:331:38
[INFO] [stdout]     |
[INFO] [stdout] 331 | impl_compose_tuple_unpacker!(A B C D E);
[INFO] [stdout]     |                                      ^ help: convert the identifier to snake case: `e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `viffy` (lib test) due to 1 previous error; 15 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `viffy` (lib) due to 1 previous error; 13 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "ef03b492f36b3c919cdbf6f8a70dfe3e02ff2770ec90518e1f4ad35092c8e8af", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ef03b492f36b3c919cdbf6f8a70dfe3e02ff2770ec90518e1f4ad35092c8e8af", kill_on_drop: false }`
[INFO] [stdout] ef03b492f36b3c919cdbf6f8a70dfe3e02ff2770ec90518e1f4ad35092c8e8af