[INFO] fetching crate alexcrichton-cranelift-codegen 0.53.0...
[INFO] checking alexcrichton-cranelift-codegen-0.53.0 against master#30f74ff0dc4d66debc8b50724c446f817e5f75f4 for pr-121848-1
[INFO] extracting crate alexcrichton-cranelift-codegen 0.53.0 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate alexcrichton-cranelift-codegen 0.53.0 on toolchain 30f74ff0dc4d66debc8b50724c446f817e5f75f4
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+30f74ff0dc4d66debc8b50724c446f817e5f75f4" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate alexcrichton-cranelift-codegen 0.53.0
[INFO] finished tweaking crates.io crate alexcrichton-cranelift-codegen 0.53.0
[INFO] tweaked toml for crates.io crate alexcrichton-cranelift-codegen 0.53.0 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+30f74ff0dc4d66debc8b50724c446f817e5f75f4" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+30f74ff0dc4d66debc8b50724c446f817e5f75f4" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded target-lexicon v0.10.0
[INFO] [stderr]   Downloaded alexcrichton-cranelift-bforest v0.53.0
[INFO] [stderr]   Downloaded alexcrichton-cranelift-codegen-shared v0.53.0
[INFO] [stderr]   Downloaded alexcrichton-cranelift-entity v0.53.0
[INFO] [stderr]   Downloaded alexcrichton-cranelift-codegen-meta v0.53.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+30f74ff0dc4d66debc8b50724c446f817e5f75f4" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9f2e82a027368a6d3c892aa3db07b2b9bea8da8ef409c9e4924f79ae8f300b65
[INFO] running `Command { std: "docker" "start" "-a" "9f2e82a027368a6d3c892aa3db07b2b9bea8da8ef409c9e4924f79ae8f300b65", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9f2e82a027368a6d3c892aa3db07b2b9bea8da8ef409c9e4924f79ae8f300b65", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9f2e82a027368a6d3c892aa3db07b2b9bea8da8ef409c9e4924f79ae8f300b65", kill_on_drop: false }`
[INFO] [stdout] 9f2e82a027368a6d3c892aa3db07b2b9bea8da8ef409c9e4924f79ae8f300b65
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+30f74ff0dc4d66debc8b50724c446f817e5f75f4" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c51afe7537d2ec6302564313ec6fcb76c2c6e83c3299e4c78fa2a4ae531c4705
[INFO] running `Command { std: "docker" "start" "-a" "c51afe7537d2ec6302564313ec6fcb76c2c6e83c3299e4c78fa2a4ae531c4705", kill_on_drop: false }`
[INFO] [stderr]    Compiling alexcrichton-cranelift-codegen-shared v0.53.0
[INFO] [stderr]    Compiling alexcrichton-cranelift-entity v0.53.0
[INFO] [stderr]    Compiling target-lexicon v0.10.0
[INFO] [stderr]     Checking log v0.4.21
[INFO] [stderr]     Checking smallvec v1.13.2
[INFO] [stderr]     Checking byteorder v1.5.0
[INFO] [stderr]     Checking alexcrichton-cranelift-bforest v0.53.0
[INFO] [stderr]    Compiling alexcrichton-cranelift-codegen-meta v0.53.0
[INFO] [stderr]    Compiling alexcrichton-cranelift-codegen v0.53.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `IntoIterator` is imported redundantly
[INFO] [stdout]   --> src/ir/layout.rs:12:18
[INFO] [stdout]    |
[INFO] [stdout] 12 | use core::iter::{IntoIterator, Iterator};
[INFO] [stdout]    |                  ^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/30f74ff0dc4d66debc8b50724c446f817e5f75f4/library/core/src/prelude/mod.rs:28:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `IntoIterator` is already defined here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Iterator` is imported redundantly
[INFO] [stdout]   --> src/ir/layout.rs:12:32
[INFO] [stdout]    |
[INFO] [stdout] 12 | use core::iter::{IntoIterator, Iterator};
[INFO] [stdout]    |                                ^^^^^^^^
[INFO] [stdout]   --> /rustc/30f74ff0dc4d66debc8b50724c446f817e5f75f4/library/core/src/prelude/mod.rs:28:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `Iterator` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Default` is imported redundantly
[INFO] [stdout]  --> src/ir/types.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use core::default::Default;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/30f74ff0dc4d66debc8b50724c446f817e5f75f4/library/core/src/prelude/mod.rs:28:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `Default` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `From` is imported redundantly
[INFO] [stdout]  --> src/bitset.rs:8:21
[INFO] [stdout]   |
[INFO] [stdout] 8 | use core::convert::{From, Into};
[INFO] [stdout]   |                     ^^^^
[INFO] [stdout]  --> /rustc/30f74ff0dc4d66debc8b50724c446f817e5f75f4/library/core/src/prelude/mod.rs:28:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `From` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Into` is imported redundantly
[INFO] [stdout]  --> src/bitset.rs:8:27
[INFO] [stdout]   |
[INFO] [stdout] 8 | use core::convert::{From, Into};
[INFO] [stdout]   |                           ^^^^
[INFO] [stdout]  --> /rustc/30f74ff0dc4d66debc8b50724c446f817e5f75f4/library/core/src/prelude/mod.rs:28:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `Into` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Default` is imported redundantly
[INFO] [stdout]   --> src/fx.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | use core::default::Default;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/30f74ff0dc4d66debc8b50724c446f817e5f75f4/library/core/src/prelude/mod.rs:28:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `Default` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `ExactSizeIterator` is imported redundantly
[INFO] [stdout]   --> src/regalloc/register_set.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use core::iter::ExactSizeIterator;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/30f74ff0dc4d66debc8b50724c446f817e5f75f4/library/core/src/prelude/mod.rs:28:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `ExactSizeIterator` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `ExactSizeIterator` is imported redundantly
[INFO] [stdout]   --> src/regalloc/pressure.rs:43:5
[INFO] [stdout]    |
[INFO] [stdout] 43 | use core::iter::ExactSizeIterator;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/30f74ff0dc4d66debc8b50724c446f817e5f75f4/library/core/src/prelude/mod.rs:28:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `ExactSizeIterator` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self::safepoint::emit_stackmaps`
[INFO] [stdout]   --> src/regalloc/mod.rs:26:9
[INFO] [stdout]    |
[INFO] [stdout] 26 | pub use self::safepoint::emit_stackmaps;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Iterator` is imported redundantly
[INFO] [stdout]  --> src/value_label.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use core::iter::Iterator;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/30f74ff0dc4d66debc8b50724c446f817e5f75f4/library/core/src/prelude/mod.rs:28:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `Iterator` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `ControlFlowGraph` is imported redundantly
[INFO] [stdout]    --> src/dominator_tree.rs:626:9
[INFO] [stdout]     |
[INFO] [stdout] 624 |     use super::*;
[INFO] [stdout]     |         -------- the item `ControlFlowGraph` is already imported here
[INFO] [stdout] 625 |     use crate::cursor::{Cursor, FuncCursor};
[INFO] [stdout] 626 |     use crate::flowgraph::ControlFlowGraph;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Function` is imported redundantly
[INFO] [stdout]    --> src/dominator_tree.rs:628:21
[INFO] [stdout]     |
[INFO] [stdout] 624 |     use super::*;
[INFO] [stdout]     |         -------- the item `Function` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 628 |     use crate::ir::{Function, InstBuilder, TrapCode};
[INFO] [stdout]     |                     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Function` is imported redundantly
[INFO] [stdout]    --> src/flowgraph.rs:216:28
[INFO] [stdout]     |
[INFO] [stdout] 214 |     use super::*;
[INFO] [stdout]     |         -------- the item `Function` is already imported here
[INFO] [stdout] 215 |     use crate::cursor::{Cursor, FuncCursor};
[INFO] [stdout] 216 |     use crate::ir::{types, Function, InstBuilder};
[INFO] [stdout]     |                            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `types` is imported redundantly
[INFO] [stdout]     --> src/ir/dfg.rs:1107:9
[INFO] [stdout]      |
[INFO] [stdout] 1105 |     use super::*;
[INFO] [stdout]      |         -------- the item `types` is already imported here
[INFO] [stdout] 1106 |     use crate::cursor::{Cursor, FuncCursor};
[INFO] [stdout] 1107 |     use crate::ir::types;
[INFO] [stdout]      |         ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `InstructionData` is imported redundantly
[INFO] [stdout]     --> src/ir/dfg.rs:1108:31
[INFO] [stdout]      |
[INFO] [stdout] 1105 |     use super::*;
[INFO] [stdout]      |         -------- the item `InstructionData` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 1108 |     use crate::ir::{Function, InstructionData, Opcode, TrapCode};
[INFO] [stdout]      |                               ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `u32` is imported redundantly
[INFO] [stdout]    --> src/ir/entities.rs:459:9
[INFO] [stdout]     |
[INFO] [stdout] 457 |     use super::*;
[INFO] [stdout]     |         -------- the item `u32` is already imported here
[INFO] [stdout] 458 |     use alloc::string::ToString;
[INFO] [stdout] 459 |     use core::u32;
[INFO] [stdout]     |         ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Display` is imported redundantly
[INFO] [stdout]    --> src/ir/immediates.rs:832:9
[INFO] [stdout]     |
[INFO] [stdout] 830 |     use super::*;
[INFO] [stdout]     |         -------- the item `Display` is already imported here
[INFO] [stdout] 831 |     use alloc::string::ToString;
[INFO] [stdout] 832 |     use core::fmt::Display;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `FromStr` is imported redundantly
[INFO] [stdout]    --> src/ir/immediates.rs:834:9
[INFO] [stdout]     |
[INFO] [stdout] 830 |     use super::*;
[INFO] [stdout]     |         -------- the item `FromStr` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 834 |     use core::str::FromStr;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `IntoIterator` is imported redundantly
[INFO] [stdout]   --> src/ir/layout.rs:12:18
[INFO] [stdout]    |
[INFO] [stdout] 12 | use core::iter::{IntoIterator, Iterator};
[INFO] [stdout]    |                  ^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/30f74ff0dc4d66debc8b50724c446f817e5f75f4/library/core/src/prelude/mod.rs:28:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `IntoIterator` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Iterator` is imported redundantly
[INFO] [stdout]   --> src/ir/layout.rs:12:32
[INFO] [stdout]    |
[INFO] [stdout] 12 | use core::iter::{IntoIterator, Iterator};
[INFO] [stdout]    |                                ^^^^^^^^
[INFO] [stdout]   --> /rustc/30f74ff0dc4d66debc8b50724c446f817e5f75f4/library/core/src/prelude/mod.rs:28:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `Iterator` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `EntityRef` is imported redundantly
[INFO] [stdout]    --> src/ir/progpoint.rs:149:9
[INFO] [stdout]     |
[INFO] [stdout] 148 |     use super::*;
[INFO] [stdout]     |         -------- the item `EntityRef` is already imported here
[INFO] [stdout] 149 |     use crate::entity::EntityRef;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Ebb` is imported redundantly
[INFO] [stdout]    --> src/ir/progpoint.rs:150:21
[INFO] [stdout]     |
[INFO] [stdout] 148 |     use super::*;
[INFO] [stdout]     |         -------- the item `Ebb` is already imported here
[INFO] [stdout] 149 |     use crate::entity::EntityRef;
[INFO] [stdout] 150 |     use crate::ir::{Ebb, Inst};
[INFO] [stdout]     |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Inst` is imported redundantly
[INFO] [stdout]    --> src/ir/progpoint.rs:150:26
[INFO] [stdout]     |
[INFO] [stdout] 148 |     use super::*;
[INFO] [stdout]     |         -------- the item `Inst` is already imported here
[INFO] [stdout] 149 |     use crate::entity::EntityRef;
[INFO] [stdout] 150 |     use crate::ir::{Ebb, Inst};
[INFO] [stdout]     |                          ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Default` is imported redundantly
[INFO] [stdout]  --> src/ir/types.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use core::default::Default;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/30f74ff0dc4d66debc8b50724c446f817e5f75f4/library/core/src/prelude/mod.rs:28:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `Default` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `RegUnit` is imported redundantly
[INFO] [stdout]   --> src/isa/x86/registers.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 9  |     use super::*;
[INFO] [stdout]    |         -------- the item `RegUnit` is already imported here
[INFO] [stdout] 10 |     use crate::isa::RegUnit;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `CallConv` is imported redundantly
[INFO] [stdout]    --> src/isa/x86/unwind.rs:278:30
[INFO] [stdout]     |
[INFO] [stdout] 275 |     use super::*;
[INFO] [stdout]     |         -------- the item `CallConv` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 278 |     use crate::isa::{lookup, CallConv};
[INFO] [stdout]     |                              ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `AbiParam` is imported redundantly
[INFO] [stdout]    --> src/abi.rs:194:9
[INFO] [stdout]     |
[INFO] [stdout] 192 |     use super::*;
[INFO] [stdout]     |         -------- the item `AbiParam` is already imported here
[INFO] [stdout] 193 |     use crate::ir::types;
[INFO] [stdout] 194 |     use crate::ir::AbiParam;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `From` is imported redundantly
[INFO] [stdout]  --> src/bitset.rs:8:21
[INFO] [stdout]   |
[INFO] [stdout] 8 | use core::convert::{From, Into};
[INFO] [stdout]   |                     ^^^^
[INFO] [stdout]  --> /rustc/30f74ff0dc4d66debc8b50724c446f817e5f75f4/library/core/src/prelude/mod.rs:28:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `From` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Into` is imported redundantly
[INFO] [stdout]  --> src/bitset.rs:8:27
[INFO] [stdout]   |
[INFO] [stdout] 8 | use core::convert::{From, Into};
[INFO] [stdout]   |                           ^^^^
[INFO] [stdout]  --> /rustc/30f74ff0dc4d66debc8b50724c446f817e5f75f4/library/core/src/prelude/mod.rs:28:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `Into` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Default` is imported redundantly
[INFO] [stdout]   --> src/fx.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | use core::default::Default;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/30f74ff0dc4d66debc8b50724c446f817e5f75f4/library/core/src/prelude/mod.rs:28:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `Default` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `ExactSizeIterator` is imported redundantly
[INFO] [stdout]   --> src/regalloc/register_set.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use core::iter::ExactSizeIterator;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/30f74ff0dc4d66debc8b50724c446f817e5f75f4/library/core/src/prelude/mod.rs:28:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `ExactSizeIterator` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `RegClass` is imported redundantly
[INFO] [stdout]    --> src/regalloc/register_set.rs:257:33
[INFO] [stdout]     |
[INFO] [stdout] 256 |     use super::*;
[INFO] [stdout]     |         -------- the item `RegClass` is already imported here
[INFO] [stdout] 257 |     use crate::isa::registers::{RegClass, RegClassData};
[INFO] [stdout]     |                                 ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Value` is imported redundantly
[INFO] [stdout]    --> src/regalloc/virtregs.rs:405:9
[INFO] [stdout]     |
[INFO] [stdout] 403 |     use super::*;
[INFO] [stdout]     |         -------- the item `Value` is already imported here
[INFO] [stdout] 404 |     use crate::entity::EntityRef;
[INFO] [stdout] 405 |     use crate::ir::Value;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Value` is imported redundantly
[INFO] [stdout]    --> src/regalloc/diversion.rs:292:9
[INFO] [stdout]     |
[INFO] [stdout] 290 |     use super::*;
[INFO] [stdout]     |         -------- the item `Value` is already imported here
[INFO] [stdout] 291 |     use crate::entity::EntityRef;
[INFO] [stdout] 292 |     use crate::ir::Value;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `ExactSizeIterator` is imported redundantly
[INFO] [stdout]   --> src/regalloc/pressure.rs:43:5
[INFO] [stdout]    |
[INFO] [stdout] 43 | use core::iter::ExactSizeIterator;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/30f74ff0dc4d66debc8b50724c446f817e5f75f4/library/core/src/prelude/mod.rs:28:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `ExactSizeIterator` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self::safepoint::emit_stackmaps`
[INFO] [stdout]   --> src/regalloc/mod.rs:26:9
[INFO] [stdout]    |
[INFO] [stdout] 26 | pub use self::safepoint::emit_stackmaps;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `DominatorTree` is imported redundantly
[INFO] [stdout]   --> src/topo_order.rs:95:9
[INFO] [stdout]    |
[INFO] [stdout] 93 |     use super::*;
[INFO] [stdout]    |         -------- the item `DominatorTree` is already imported here
[INFO] [stdout] 94 |     use crate::cursor::{Cursor, FuncCursor};
[INFO] [stdout] 95 |     use crate::dominator_tree::DominatorTree;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Iterator` is imported redundantly
[INFO] [stdout]  --> src/value_label.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use core::iter::Iterator;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/30f74ff0dc4d66debc8b50724c446f817e5f75f4/library/core/src/prelude/mod.rs:28:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `Iterator` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/isa/x86/abi.rs:711:13
[INFO] [stdout]     |
[INFO] [stdout] 711 |         let mut cfa_state = cfa_state
[INFO] [stdout]     |             ----^^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/isa/x86/abi.rs:736:17
[INFO] [stdout]     |
[INFO] [stdout] 736 |             let mut cfa_state = cfa_state
[INFO] [stdout]     |                 ----^^^^^^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/isa/x86/abi.rs:711:13
[INFO] [stdout]     |
[INFO] [stdout] 711 |         let mut cfa_state = cfa_state
[INFO] [stdout]     |             ----^^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/isa/x86/abi.rs:736:17
[INFO] [stdout]     |
[INFO] [stdout] 736 |             let mut cfa_state = cfa_state
[INFO] [stdout]     |                 ----^^^^^^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]     --> src/verifier/mod.rs:2018:32
[INFO] [stdout]      |
[INFO] [stdout] 2018 |                           panic!(format!(
[INFO] [stdout]      |  ________________________________^
[INFO] [stdout] 2019 | |                             "'{}' did not contain the substring '{}'",
[INFO] [stdout] 2020 | |                             message, $msg
[INFO] [stdout] 2021 | |                         ));
[INFO] [stdout]      | |_________________________^
[INFO] [stdout] ...
[INFO] [stdout] 2065 |           assert_err_with_msg!(errors, "instruction format");
[INFO] [stdout]      |           -------------------------------------------------- in this macro invocation
[INFO] [stdout]      |
[INFO] [stdout]      = note: this usage of `panic!()` is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]      = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout]      = note: the `panic!()` macro supports formatting, so there's no need for the `format!()` macro here
[INFO] [stdout]      = note: `#[warn(non_fmt_panics)]` on by default
[INFO] [stdout]      = note: this warning originates in the macro `assert_err_with_msg` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]      |
[INFO] [stdout] 2018 ~                         panic!(
[INFO] [stdout] 2019 |                             "'{}' did not contain the substring '{}'",
[INFO] [stdout] 2020 |                             message, $msg
[INFO] [stdout] 2021 ~                         );
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]     --> src/verifier/mod.rs:2018:32
[INFO] [stdout]      |
[INFO] [stdout] 2018 |                           panic!(format!(
[INFO] [stdout]      |  ________________________________^
[INFO] [stdout] 2019 | |                             "'{}' did not contain the substring '{}'",
[INFO] [stdout] 2020 | |                             message, $msg
[INFO] [stdout] 2021 | |                         ));
[INFO] [stdout]      | |_________________________^
[INFO] [stdout] ...
[INFO] [stdout] 2078 |           assert_err_with_msg!(errors, "Parameter at position 0 has an invalid type");
[INFO] [stdout]      |           --------------------------------------------------------------------------- in this macro invocation
[INFO] [stdout]      |
[INFO] [stdout]      = note: this usage of `panic!()` is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]      = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout]      = note: the `panic!()` macro supports formatting, so there's no need for the `format!()` macro here
[INFO] [stdout]      = note: this warning originates in the macro `assert_err_with_msg` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]      |
[INFO] [stdout] 2018 ~                         panic!(
[INFO] [stdout] 2019 |                             "'{}' did not contain the substring '{}'",
[INFO] [stdout] 2020 |                             message, $msg
[INFO] [stdout] 2021 ~                         );
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]     --> src/verifier/mod.rs:2018:32
[INFO] [stdout]      |
[INFO] [stdout] 2018 |                           panic!(format!(
[INFO] [stdout]      |  ________________________________^
[INFO] [stdout] 2019 | |                             "'{}' did not contain the substring '{}'",
[INFO] [stdout] 2020 | |                             message, $msg
[INFO] [stdout] 2021 | |                         ));
[INFO] [stdout]      | |_________________________^
[INFO] [stdout] ...
[INFO] [stdout] 2091 |           assert_err_with_msg!(errors, "Return value at position 0 has an invalid type");
[INFO] [stdout]      |           ------------------------------------------------------------------------------ in this macro invocation
[INFO] [stdout]      |
[INFO] [stdout]      = note: this usage of `panic!()` is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]      = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout]      = note: the `panic!()` macro supports formatting, so there's no need for the `format!()` macro here
[INFO] [stdout]      = note: this warning originates in the macro `assert_err_with_msg` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]      |
[INFO] [stdout] 2018 ~                         panic!(
[INFO] [stdout] 2019 |                             "'{}' did not contain the substring '{}'",
[INFO] [stdout] 2020 |                             message, $msg
[INFO] [stdout] 2021 ~                         );
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]     --> src/verifier/mod.rs:2018:32
[INFO] [stdout]      |
[INFO] [stdout] 2018 |                           panic!(format!(
[INFO] [stdout]      |  ________________________________^
[INFO] [stdout] 2019 | |                             "'{}' did not contain the substring '{}'",
[INFO] [stdout] 2020 | |                             message, $msg
[INFO] [stdout] 2021 | |                         ));
[INFO] [stdout]      | |_________________________^
[INFO] [stdout] ...
[INFO] [stdout] 2135 |           assert_err_with_msg!(errors, "ebb0 cannot be empty");
[INFO] [stdout]      |           ---------------------------------------------------- in this macro invocation
[INFO] [stdout]      |
[INFO] [stdout]      = note: this usage of `panic!()` is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]      = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout]      = note: the `panic!()` macro supports formatting, so there's no need for the `format!()` macro here
[INFO] [stdout]      = note: this warning originates in the macro `assert_err_with_msg` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]      |
[INFO] [stdout] 2018 ~                         panic!(
[INFO] [stdout] 2019 |                             "'{}' did not contain the substring '{}'",
[INFO] [stdout] 2020 |                             message, $msg
[INFO] [stdout] 2021 ~                         );
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 34 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.43s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: alexcrichton-cranelift-codegen-meta v0.53.0
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] running `Command { std: "docker" "inspect" "c51afe7537d2ec6302564313ec6fcb76c2c6e83c3299e4c78fa2a4ae531c4705", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c51afe7537d2ec6302564313ec6fcb76c2c6e83c3299e4c78fa2a4ae531c4705", kill_on_drop: false }`
[INFO] [stdout] c51afe7537d2ec6302564313ec6fcb76c2c6e83c3299e4c78fa2a4ae531c4705
[INFO] checking alexcrichton-cranelift-codegen-0.53.0 against try#72eda894eb3548c7ba774079ce0afab42958d4ee for pr-121848-1
[INFO] extracting crate alexcrichton-cranelift-codegen 0.53.0 into /workspace/builds/worker-2-tc2/source
[INFO] validating manifest of crates.io crate alexcrichton-cranelift-codegen 0.53.0 on toolchain 72eda894eb3548c7ba774079ce0afab42958d4ee
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+72eda894eb3548c7ba774079ce0afab42958d4ee" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate alexcrichton-cranelift-codegen 0.53.0
[INFO] finished tweaking crates.io crate alexcrichton-cranelift-codegen 0.53.0
[INFO] tweaked toml for crates.io crate alexcrichton-cranelift-codegen 0.53.0 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+72eda894eb3548c7ba774079ce0afab42958d4ee" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+72eda894eb3548c7ba774079ce0afab42958d4ee" "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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+72eda894eb3548c7ba774079ce0afab42958d4ee" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b424706363f74664cfdf5dce275e9484aece396ea5ae6f0d9d0836319c0fa769
[INFO] running `Command { std: "docker" "start" "-a" "b424706363f74664cfdf5dce275e9484aece396ea5ae6f0d9d0836319c0fa769", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b424706363f74664cfdf5dce275e9484aece396ea5ae6f0d9d0836319c0fa769", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b424706363f74664cfdf5dce275e9484aece396ea5ae6f0d9d0836319c0fa769", kill_on_drop: false }`
[INFO] [stdout] b424706363f74664cfdf5dce275e9484aece396ea5ae6f0d9d0836319c0fa769
[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" "-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+72eda894eb3548c7ba774079ce0afab42958d4ee" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b7e80cf65d07be91709c11dd77d023c9718a3f1c194c07e955b96b6aba372802
[INFO] running `Command { std: "docker" "start" "-a" "b7e80cf65d07be91709c11dd77d023c9718a3f1c194c07e955b96b6aba372802", kill_on_drop: false }`
[INFO] [stderr]    Compiling alexcrichton-cranelift-codegen-shared v0.53.0
[INFO] [stderr]    Compiling alexcrichton-cranelift-entity v0.53.0
[INFO] [stderr]    Compiling target-lexicon v0.10.0
[INFO] [stderr]     Checking log v0.4.21
[INFO] [stderr]     Checking byteorder v1.5.0
[INFO] [stderr]     Checking smallvec v1.13.2
[INFO] [stderr]     Checking alexcrichton-cranelift-bforest v0.53.0
[INFO] [stderr]    Compiling alexcrichton-cranelift-codegen-meta v0.53.0
[INFO] [stderr]    Compiling alexcrichton-cranelift-codegen v0.53.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `IntoIterator` is imported redundantly
[INFO] [stdout]   --> src/ir/layout.rs:12:18
[INFO] [stdout]    |
[INFO] [stdout] 12 | use core::iter::{IntoIterator, Iterator};
[INFO] [stdout]    |                  ^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/72eda894eb3548c7ba774079ce0afab42958d4ee/library/core/src/prelude/mod.rs:28:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `IntoIterator` is already defined here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Iterator` is imported redundantly
[INFO] [stdout]   --> src/ir/layout.rs:12:32
[INFO] [stdout]    |
[INFO] [stdout] 12 | use core::iter::{IntoIterator, Iterator};
[INFO] [stdout]    |                                ^^^^^^^^
[INFO] [stdout]   --> /rustc/72eda894eb3548c7ba774079ce0afab42958d4ee/library/core/src/prelude/mod.rs:28:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `Iterator` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Default` is imported redundantly
[INFO] [stdout]  --> src/ir/types.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use core::default::Default;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/72eda894eb3548c7ba774079ce0afab42958d4ee/library/core/src/prelude/mod.rs:28:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `Default` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `From` is imported redundantly
[INFO] [stdout]  --> src/bitset.rs:8:21
[INFO] [stdout]   |
[INFO] [stdout] 8 | use core::convert::{From, Into};
[INFO] [stdout]   |                     ^^^^
[INFO] [stdout]  --> /rustc/72eda894eb3548c7ba774079ce0afab42958d4ee/library/core/src/prelude/mod.rs:28:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `From` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Into` is imported redundantly
[INFO] [stdout]  --> src/bitset.rs:8:27
[INFO] [stdout]   |
[INFO] [stdout] 8 | use core::convert::{From, Into};
[INFO] [stdout]   |                           ^^^^
[INFO] [stdout]  --> /rustc/72eda894eb3548c7ba774079ce0afab42958d4ee/library/core/src/prelude/mod.rs:28:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `Into` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Default` is imported redundantly
[INFO] [stdout]   --> src/fx.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | use core::default::Default;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/72eda894eb3548c7ba774079ce0afab42958d4ee/library/core/src/prelude/mod.rs:28:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `Default` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `ExactSizeIterator` is imported redundantly
[INFO] [stdout]   --> src/regalloc/register_set.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use core::iter::ExactSizeIterator;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/72eda894eb3548c7ba774079ce0afab42958d4ee/library/core/src/prelude/mod.rs:28:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `ExactSizeIterator` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `ExactSizeIterator` is imported redundantly
[INFO] [stdout]   --> src/regalloc/pressure.rs:43:5
[INFO] [stdout]    |
[INFO] [stdout] 43 | use core::iter::ExactSizeIterator;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/72eda894eb3548c7ba774079ce0afab42958d4ee/library/core/src/prelude/mod.rs:28:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `ExactSizeIterator` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self::safepoint::emit_stackmaps`
[INFO] [stdout]   --> src/regalloc/mod.rs:26:9
[INFO] [stdout]    |
[INFO] [stdout] 26 | pub use self::safepoint::emit_stackmaps;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Iterator` is imported redundantly
[INFO] [stdout]  --> src/value_label.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use core::iter::Iterator;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/72eda894eb3548c7ba774079ce0afab42958d4ee/library/core/src/prelude/mod.rs:28:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `Iterator` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `ControlFlowGraph` is imported redundantly
[INFO] [stdout]    --> src/dominator_tree.rs:626:9
[INFO] [stdout]     |
[INFO] [stdout] 624 |     use super::*;
[INFO] [stdout]     |         -------- the item `ControlFlowGraph` is already imported here
[INFO] [stdout] 625 |     use crate::cursor::{Cursor, FuncCursor};
[INFO] [stdout] 626 |     use crate::flowgraph::ControlFlowGraph;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Function` is imported redundantly
[INFO] [stdout]    --> src/dominator_tree.rs:628:21
[INFO] [stdout]     |
[INFO] [stdout] 624 |     use super::*;
[INFO] [stdout]     |         -------- the item `Function` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 628 |     use crate::ir::{Function, InstBuilder, TrapCode};
[INFO] [stdout]     |                     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Function` is imported redundantly
[INFO] [stdout]    --> src/flowgraph.rs:216:28
[INFO] [stdout]     |
[INFO] [stdout] 214 |     use super::*;
[INFO] [stdout]     |         -------- the item `Function` is already imported here
[INFO] [stdout] 215 |     use crate::cursor::{Cursor, FuncCursor};
[INFO] [stdout] 216 |     use crate::ir::{types, Function, InstBuilder};
[INFO] [stdout]     |                            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `types` is imported redundantly
[INFO] [stdout]     --> src/ir/dfg.rs:1107:9
[INFO] [stdout]      |
[INFO] [stdout] 1105 |     use super::*;
[INFO] [stdout]      |         -------- the item `types` is already imported here
[INFO] [stdout] 1106 |     use crate::cursor::{Cursor, FuncCursor};
[INFO] [stdout] 1107 |     use crate::ir::types;
[INFO] [stdout]      |         ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `InstructionData` is imported redundantly
[INFO] [stdout]     --> src/ir/dfg.rs:1108:31
[INFO] [stdout]      |
[INFO] [stdout] 1105 |     use super::*;
[INFO] [stdout]      |         -------- the item `InstructionData` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 1108 |     use crate::ir::{Function, InstructionData, Opcode, TrapCode};
[INFO] [stdout]      |                               ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `u32` is imported redundantly
[INFO] [stdout]    --> src/ir/entities.rs:459:9
[INFO] [stdout]     |
[INFO] [stdout] 457 |     use super::*;
[INFO] [stdout]     |         -------- the item `u32` is already imported here
[INFO] [stdout] 458 |     use alloc::string::ToString;
[INFO] [stdout] 459 |     use core::u32;
[INFO] [stdout]     |         ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Display` is imported redundantly
[INFO] [stdout]    --> src/ir/immediates.rs:832:9
[INFO] [stdout]     |
[INFO] [stdout] 830 |     use super::*;
[INFO] [stdout]     |         -------- the item `Display` is already imported here
[INFO] [stdout] 831 |     use alloc::string::ToString;
[INFO] [stdout] 832 |     use core::fmt::Display;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `FromStr` is imported redundantly
[INFO] [stdout]    --> src/ir/immediates.rs:834:9
[INFO] [stdout]     |
[INFO] [stdout] 830 |     use super::*;
[INFO] [stdout]     |         -------- the item `FromStr` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 834 |     use core::str::FromStr;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `IntoIterator` is imported redundantly
[INFO] [stdout]   --> src/ir/layout.rs:12:18
[INFO] [stdout]    |
[INFO] [stdout] 12 | use core::iter::{IntoIterator, Iterator};
[INFO] [stdout]    |                  ^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/72eda894eb3548c7ba774079ce0afab42958d4ee/library/core/src/prelude/mod.rs:28:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `IntoIterator` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Iterator` is imported redundantly
[INFO] [stdout]   --> src/ir/layout.rs:12:32
[INFO] [stdout]    |
[INFO] [stdout] 12 | use core::iter::{IntoIterator, Iterator};
[INFO] [stdout]    |                                ^^^^^^^^
[INFO] [stdout]   --> /rustc/72eda894eb3548c7ba774079ce0afab42958d4ee/library/core/src/prelude/mod.rs:28:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `Iterator` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `EntityRef` is imported redundantly
[INFO] [stdout]    --> src/ir/progpoint.rs:149:9
[INFO] [stdout]     |
[INFO] [stdout] 148 |     use super::*;
[INFO] [stdout]     |         -------- the item `EntityRef` is already imported here
[INFO] [stdout] 149 |     use crate::entity::EntityRef;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Ebb` is imported redundantly
[INFO] [stdout]    --> src/ir/progpoint.rs:150:21
[INFO] [stdout]     |
[INFO] [stdout] 148 |     use super::*;
[INFO] [stdout]     |         -------- the item `Ebb` is already imported here
[INFO] [stdout] 149 |     use crate::entity::EntityRef;
[INFO] [stdout] 150 |     use crate::ir::{Ebb, Inst};
[INFO] [stdout]     |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Inst` is imported redundantly
[INFO] [stdout]    --> src/ir/progpoint.rs:150:26
[INFO] [stdout]     |
[INFO] [stdout] 148 |     use super::*;
[INFO] [stdout]     |         -------- the item `Inst` is already imported here
[INFO] [stdout] 149 |     use crate::entity::EntityRef;
[INFO] [stdout] 150 |     use crate::ir::{Ebb, Inst};
[INFO] [stdout]     |                          ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Default` is imported redundantly
[INFO] [stdout]  --> src/ir/types.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use core::default::Default;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/72eda894eb3548c7ba774079ce0afab42958d4ee/library/core/src/prelude/mod.rs:28:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `Default` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `RegUnit` is imported redundantly
[INFO] [stdout]   --> src/isa/x86/registers.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 9  |     use super::*;
[INFO] [stdout]    |         -------- the item `RegUnit` is already imported here
[INFO] [stdout] 10 |     use crate::isa::RegUnit;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `CallConv` is imported redundantly
[INFO] [stdout]    --> src/isa/x86/unwind.rs:278:30
[INFO] [stdout]     |
[INFO] [stdout] 275 |     use super::*;
[INFO] [stdout]     |         -------- the item `CallConv` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 278 |     use crate::isa::{lookup, CallConv};
[INFO] [stdout]     |                              ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `AbiParam` is imported redundantly
[INFO] [stdout]    --> src/abi.rs:194:9
[INFO] [stdout]     |
[INFO] [stdout] 192 |     use super::*;
[INFO] [stdout]     |         -------- the item `AbiParam` is already imported here
[INFO] [stdout] 193 |     use crate::ir::types;
[INFO] [stdout] 194 |     use crate::ir::AbiParam;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `From` is imported redundantly
[INFO] [stdout]  --> src/bitset.rs:8:21
[INFO] [stdout]   |
[INFO] [stdout] 8 | use core::convert::{From, Into};
[INFO] [stdout]   |                     ^^^^
[INFO] [stdout]  --> /rustc/72eda894eb3548c7ba774079ce0afab42958d4ee/library/core/src/prelude/mod.rs:28:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `From` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Into` is imported redundantly
[INFO] [stdout]  --> src/bitset.rs:8:27
[INFO] [stdout]   |
[INFO] [stdout] 8 | use core::convert::{From, Into};
[INFO] [stdout]   |                           ^^^^
[INFO] [stdout]  --> /rustc/72eda894eb3548c7ba774079ce0afab42958d4ee/library/core/src/prelude/mod.rs:28:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `Into` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Default` is imported redundantly
[INFO] [stdout]   --> src/fx.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | use core::default::Default;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/72eda894eb3548c7ba774079ce0afab42958d4ee/library/core/src/prelude/mod.rs:28:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `Default` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `ExactSizeIterator` is imported redundantly
[INFO] [stdout]   --> src/regalloc/register_set.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use core::iter::ExactSizeIterator;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/72eda894eb3548c7ba774079ce0afab42958d4ee/library/core/src/prelude/mod.rs:28:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `ExactSizeIterator` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `RegClass` is imported redundantly
[INFO] [stdout]    --> src/regalloc/register_set.rs:257:33
[INFO] [stdout]     |
[INFO] [stdout] 256 |     use super::*;
[INFO] [stdout]     |         -------- the item `RegClass` is already imported here
[INFO] [stdout] 257 |     use crate::isa::registers::{RegClass, RegClassData};
[INFO] [stdout]     |                                 ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Value` is imported redundantly
[INFO] [stdout]    --> src/regalloc/virtregs.rs:405:9
[INFO] [stdout]     |
[INFO] [stdout] 403 |     use super::*;
[INFO] [stdout]     |         -------- the item `Value` is already imported here
[INFO] [stdout] 404 |     use crate::entity::EntityRef;
[INFO] [stdout] 405 |     use crate::ir::Value;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Value` is imported redundantly
[INFO] [stdout]    --> src/regalloc/diversion.rs:292:9
[INFO] [stdout]     |
[INFO] [stdout] 290 |     use super::*;
[INFO] [stdout]     |         -------- the item `Value` is already imported here
[INFO] [stdout] 291 |     use crate::entity::EntityRef;
[INFO] [stdout] 292 |     use crate::ir::Value;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `ExactSizeIterator` is imported redundantly
[INFO] [stdout]   --> src/regalloc/pressure.rs:43:5
[INFO] [stdout]    |
[INFO] [stdout] 43 | use core::iter::ExactSizeIterator;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/72eda894eb3548c7ba774079ce0afab42958d4ee/library/core/src/prelude/mod.rs:28:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `ExactSizeIterator` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self::safepoint::emit_stackmaps`
[INFO] [stdout]   --> src/regalloc/mod.rs:26:9
[INFO] [stdout]    |
[INFO] [stdout] 26 | pub use self::safepoint::emit_stackmaps;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `DominatorTree` is imported redundantly
[INFO] [stdout]   --> src/topo_order.rs:95:9
[INFO] [stdout]    |
[INFO] [stdout] 93 |     use super::*;
[INFO] [stdout]    |         -------- the item `DominatorTree` is already imported here
[INFO] [stdout] 94 |     use crate::cursor::{Cursor, FuncCursor};
[INFO] [stdout] 95 |     use crate::dominator_tree::DominatorTree;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Iterator` is imported redundantly
[INFO] [stdout]  --> src/value_label.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use core::iter::Iterator;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/72eda894eb3548c7ba774079ce0afab42958d4ee/library/core/src/prelude/mod.rs:28:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `Iterator` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/isa/x86/abi.rs:711:13
[INFO] [stdout]     |
[INFO] [stdout] 711 |         let mut cfa_state = cfa_state
[INFO] [stdout]     |             ----^^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/isa/x86/abi.rs:736:17
[INFO] [stdout]     |
[INFO] [stdout] 736 |             let mut cfa_state = cfa_state
[INFO] [stdout]     |                 ----^^^^^^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/isa/x86/abi.rs:711:13
[INFO] [stdout]     |
[INFO] [stdout] 711 |         let mut cfa_state = cfa_state
[INFO] [stdout]     |             ----^^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/isa/x86/abi.rs:736:17
[INFO] [stdout]     |
[INFO] [stdout] 736 |             let mut cfa_state = cfa_state
[INFO] [stdout]     |                 ----^^^^^^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]     --> src/verifier/mod.rs:2018:32
[INFO] [stdout]      |
[INFO] [stdout] 2018 |                           panic!(format!(
[INFO] [stdout]      |  ________________________________^
[INFO] [stdout] 2019 | |                             "'{}' did not contain the substring '{}'",
[INFO] [stdout] 2020 | |                             message, $msg
[INFO] [stdout] 2021 | |                         ));
[INFO] [stdout]      | |_________________________^
[INFO] [stdout] ...
[INFO] [stdout] 2065 |           assert_err_with_msg!(errors, "instruction format");
[INFO] [stdout]      |           -------------------------------------------------- in this macro invocation
[INFO] [stdout]      |
[INFO] [stdout]      = note: this usage of `panic!()` is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]      = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout]      = note: the `panic!()` macro supports formatting, so there's no need for the `format!()` macro here
[INFO] [stdout]      = note: `#[warn(non_fmt_panics)]` on by default
[INFO] [stdout]      = note: this warning originates in the macro `assert_err_with_msg` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]      |
[INFO] [stdout] 2018 ~                         panic!(
[INFO] [stdout] 2019 |                             "'{}' did not contain the substring '{}'",
[INFO] [stdout] 2020 |                             message, $msg
[INFO] [stdout] 2021 ~                         );
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]     --> src/verifier/mod.rs:2018:32
[INFO] [stdout]      |
[INFO] [stdout] 2018 |                           panic!(format!(
[INFO] [stdout]      |  ________________________________^
[INFO] [stdout] 2019 | |                             "'{}' did not contain the substring '{}'",
[INFO] [stdout] 2020 | |                             message, $msg
[INFO] [stdout] 2021 | |                         ));
[INFO] [stdout]      | |_________________________^
[INFO] [stdout] ...
[INFO] [stdout] 2078 |           assert_err_with_msg!(errors, "Parameter at position 0 has an invalid type");
[INFO] [stdout]      |           --------------------------------------------------------------------------- in this macro invocation
[INFO] [stdout]      |
[INFO] [stdout]      = note: this usage of `panic!()` is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]      = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout]      = note: the `panic!()` macro supports formatting, so there's no need for the `format!()` macro here
[INFO] [stdout]      = note: this warning originates in the macro `assert_err_with_msg` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]      |
[INFO] [stdout] 2018 ~                         panic!(
[INFO] [stdout] 2019 |                             "'{}' did not contain the substring '{}'",
[INFO] [stdout] 2020 |                             message, $msg
[INFO] [stdout] 2021 ~                         );
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]     --> src/verifier/mod.rs:2018:32
[INFO] [stdout]      |
[INFO] [stdout] 2018 |                           panic!(format!(
[INFO] [stdout]      |  ________________________________^
[INFO] [stdout] 2019 | |                             "'{}' did not contain the substring '{}'",
[INFO] [stdout] 2020 | |                             message, $msg
[INFO] [stdout] 2021 | |                         ));
[INFO] [stdout]      | |_________________________^
[INFO] [stdout] ...
[INFO] [stdout] 2091 |           assert_err_with_msg!(errors, "Return value at position 0 has an invalid type");
[INFO] [stdout]      |           ------------------------------------------------------------------------------ in this macro invocation
[INFO] [stdout]      |
[INFO] [stdout]      = note: this usage of `panic!()` is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]      = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout]      = note: the `panic!()` macro supports formatting, so there's no need for the `format!()` macro here
[INFO] [stdout]      = note: this warning originates in the macro `assert_err_with_msg` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]      |
[INFO] [stdout] 2018 ~                         panic!(
[INFO] [stdout] 2019 |                             "'{}' did not contain the substring '{}'",
[INFO] [stdout] 2020 |                             message, $msg
[INFO] [stdout] 2021 ~                         );
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]     --> src/verifier/mod.rs:2018:32
[INFO] [stdout]      |
[INFO] [stdout] 2018 |                           panic!(format!(
[INFO] [stdout]      |  ________________________________^
[INFO] [stdout] 2019 | |                             "'{}' did not contain the substring '{}'",
[INFO] [stdout] 2020 | |                             message, $msg
[INFO] [stdout] 2021 | |                         ));
[INFO] [stdout]      | |_________________________^
[INFO] [stdout] ...
[INFO] [stdout] 2135 |           assert_err_with_msg!(errors, "ebb0 cannot be empty");
[INFO] [stdout]      |           ---------------------------------------------------- in this macro invocation
[INFO] [stdout]      |
[INFO] [stdout]      = note: this usage of `panic!()` is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]      = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout]      = note: the `panic!()` macro supports formatting, so there's no need for the `format!()` macro here
[INFO] [stdout]      = note: this warning originates in the macro `assert_err_with_msg` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]      |
[INFO] [stdout] 2018 ~                         panic!(
[INFO] [stdout] 2019 |                             "'{}' did not contain the substring '{}'",
[INFO] [stdout] 2020 |                             message, $msg
[INFO] [stdout] 2021 ~                         );
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 34 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.30s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: alexcrichton-cranelift-codegen-meta v0.53.0
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] running `Command { std: "docker" "inspect" "b7e80cf65d07be91709c11dd77d023c9718a3f1c194c07e955b96b6aba372802", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b7e80cf65d07be91709c11dd77d023c9718a3f1c194c07e955b96b6aba372802", kill_on_drop: false }`
[INFO] [stdout] b7e80cf65d07be91709c11dd77d023c9718a3f1c194c07e955b96b6aba372802
