[INFO] fetching crate virmin 0.3.0...
[INFO] checking virmin-0.3.0 against master#8c32e313cccf7df531e2d49ffb8227bb92304aee for pr-145608-1
[INFO] extracting crate virmin 0.3.0 into /workspace/builds/worker-6-tc1/source
[INFO] started tweaking crates.io crate virmin 0.3.0
[INFO] finished tweaking crates.io crate virmin 0.3.0
[INFO] tweaked toml for crates.io crate virmin 0.3.0 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate virmin 0.3.0 on toolchain 8c32e313cccf7df531e2d49ffb8227bb92304aee
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "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" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 8 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 28c55f5b0b434b4ab1c9a816458cee89fa7ed8fd215c589a36f2ae4647649b37
[INFO] running `Command { std: "docker" "start" "-a" "28c55f5b0b434b4ab1c9a816458cee89fa7ed8fd215c589a36f2ae4647649b37", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "28c55f5b0b434b4ab1c9a816458cee89fa7ed8fd215c589a36f2ae4647649b37", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "28c55f5b0b434b4ab1c9a816458cee89fa7ed8fd215c589a36f2ae4647649b37", kill_on_drop: false }`
[INFO] [stdout] 28c55f5b0b434b4ab1c9a816458cee89fa7ed8fd215c589a36f2ae4647649b37
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1b3d8f763fd4d140da74d2ebd15a5e1d10b6716651e347b4eff37ba8e0677f7b
[INFO] running `Command { std: "docker" "start" "-a" "1b3d8f763fd4d140da74d2ebd15a5e1d10b6716651e347b4eff37ba8e0677f7b", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]     Checking num-integer v0.1.46
[INFO] [stderr]     Checking num-complex v0.4.6
[INFO] [stderr]     Checking num-bigint v0.4.6
[INFO] [stderr]     Checking num-iter v0.1.45
[INFO] [stderr]     Checking num-rational v0.4.2
[INFO] [stderr]     Checking num v0.4.3
[INFO] [stderr]     Checking virmin v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/domain.rs:44:6
[INFO] [stdout]    |
[INFO] [stdout] 44 |     for i in 0 .. self.value {
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/domain.rs:76:6
[INFO] [stdout]    |
[INFO] [stdout] 76 |     for i in 0 .. self.value {
[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/domain.rs:44:6
[INFO] [stdout]    |
[INFO] [stdout] 44 |     for i in 0 .. self.value {
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/domain.rs:76:6
[INFO] [stdout]    |
[INFO] [stdout] 76 |     for i in 0 .. self.value {
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `w`
[INFO] [stdout]   --> src/insn.rs:94:34
[INFO] [stdout]    |
[INFO] [stdout] 94 |         AbstractMicroCode::Copy(x,y,w) => {
[INFO] [stdout]    |                                     ^ help: if this is intentional, prefix it with an underscore: `_w`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/insn.rs:97:32
[INFO] [stdout]    |
[INFO] [stdout] 97 |         AbstractMicroCode::Load(x,i,w) => {
[INFO] [stdout]    |                                   ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `w`
[INFO] [stdout]   --> src/insn.rs:97:34
[INFO] [stdout]    |
[INFO] [stdout] 97 |         AbstractMicroCode::Load(x,i,w) => {
[INFO] [stdout]    |                                     ^ help: if this is intentional, prefix it with an underscore: `_w`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/insn.rs:143:21
[INFO] [stdout]     |
[INFO] [stdout] 143 |         Operand::Const(i) => {
[INFO] [stdout]     |                        ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `w`
[INFO] [stdout]   --> src/insn.rs:94:34
[INFO] [stdout]    |
[INFO] [stdout] 94 |         AbstractMicroCode::Copy(x,y,w) => {
[INFO] [stdout]    |                                     ^ help: if this is intentional, prefix it with an underscore: `_w`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/insn.rs:97:32
[INFO] [stdout]    |
[INFO] [stdout] 97 |         AbstractMicroCode::Load(x,i,w) => {
[INFO] [stdout]    |                                   ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `w`
[INFO] [stdout]   --> src/insn.rs:97:34
[INFO] [stdout]    |
[INFO] [stdout] 97 |         AbstractMicroCode::Load(x,i,w) => {
[INFO] [stdout]    |                                     ^ help: if this is intentional, prefix it with an underscore: `_w`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/insn.rs:143:21
[INFO] [stdout]     |
[INFO] [stdout] 143 |         Operand::Const(i) => {
[INFO] [stdout]     |                        ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/machine.rs:211:6
[INFO] [stdout]     |
[INFO] [stdout] 211 |         _ => {
[INFO] [stdout]     |         ^ no value can reach this
[INFO] [stdout]     |
[INFO] [stdout] note: multiple earlier patterns match some of the same values
[INFO] [stdout]    --> src/machine.rs:211:6
[INFO] [stdout]     |
[INFO] [stdout] 129 |         MicroCode::Add(x,y,Width::Byte) => {
[INFO] [stdout]     |         ------------------------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 138 |         MicroCode::Add(x,y,Width::Word) => {
[INFO] [stdout]     |         ------------------------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 147 |         MicroCode::Add(x,y,Width::DoubleWord) => {
[INFO] [stdout]     |         ------------------------------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 156 |         MicroCode::Add(x,y,Width::QuadWord) => {
[INFO] [stdout]     |         ----------------------------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 211 |         _ => {
[INFO] [stdout]     |         ^ ...and 10 other patterns collectively make this unreachable
[INFO] [stdout]     = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/machine.rs:211:6
[INFO] [stdout]     |
[INFO] [stdout] 211 |         _ => {
[INFO] [stdout]     |         ^ no value can reach this
[INFO] [stdout]     |
[INFO] [stdout] note: multiple earlier patterns match some of the same values
[INFO] [stdout]    --> src/machine.rs:211:6
[INFO] [stdout]     |
[INFO] [stdout] 129 |         MicroCode::Add(x,y,Width::Byte) => {
[INFO] [stdout]     |         ------------------------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 138 |         MicroCode::Add(x,y,Width::Word) => {
[INFO] [stdout]     |         ------------------------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 147 |         MicroCode::Add(x,y,Width::DoubleWord) => {
[INFO] [stdout]     |         ------------------------------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 156 |         MicroCode::Add(x,y,Width::QuadWord) => {
[INFO] [stdout]     |         ----------------------------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 211 |         _ => {
[INFO] [stdout]     |         ^ ...and 10 other patterns collectively make this unreachable
[INFO] [stdout]     = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `mnemonic` and `format` are never read
[INFO] [stdout]    --> src/insn.rs:171:5
[INFO] [stdout]     |
[INFO] [stdout] 168 | pub struct Instruction<'a> {
[INFO] [stdout]     |            ----------- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 171 |     mnemonic: &'a str,
[INFO] [stdout]     |     ^^^^^^^^
[INFO] [stdout] 172 |     /// Format associated with this instruction.
[INFO] [stdout] 173 |     format: &'a Format,
[INFO] [stdout]     |     ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `insns` is never read
[INFO] [stdout]    --> src/insn.rs:201:5
[INFO] [stdout]     |
[INFO] [stdout] 200 | pub struct InstructionSet<'a> {
[INFO] [stdout]     |            -------------- field in this struct
[INFO] [stdout] 201 |     insns : &'a [Instruction<'a>]
[INFO] [stdout]     |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `mnemonic` and `format` are never read
[INFO] [stdout]    --> src/insn.rs:171:5
[INFO] [stdout]     |
[INFO] [stdout] 168 | pub struct Instruction<'a> {
[INFO] [stdout]     |            ----------- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 171 |     mnemonic: &'a str,
[INFO] [stdout]     |     ^^^^^^^^
[INFO] [stdout] 172 |     /// Format associated with this instruction.
[INFO] [stdout] 173 |     format: &'a Format,
[INFO] [stdout]     |     ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `insns` is never read
[INFO] [stdout]    --> src/insn.rs:201:5
[INFO] [stdout]     |
[INFO] [stdout] 200 | pub struct InstructionSet<'a> {
[INFO] [stdout]     |            -------------- field in this struct
[INFO] [stdout] 201 |     insns : &'a [Instruction<'a>]
[INFO] [stdout]     |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `virmin::machine::Memory`
[INFO] [stdout]  --> tests/machine_tests.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use virmin::machine::Memory;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `QuadWord`
[INFO] [stdout]  --> tests/machine_tests.rs:4:51
[INFO] [stdout]   |
[INFO] [stdout] 4 | use virmin::machine::Width::{Byte,Word,DoubleWord,QuadWord};
[INFO] [stdout]   |                                                   ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `virmin::machine::Sign::*`
[INFO] [stdout]  --> tests/machine_tests.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use virmin::machine::Sign::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Word`
[INFO] [stdout]  --> tests/insn_tests.rs:8:35
[INFO] [stdout]   |
[INFO] [stdout] 8 | use virmin::machine::Width::{Byte,Word};
[INFO] [stdout]   |                                   ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `insn`
[INFO] [stdout]    --> tests/insn_tests.rs:140:9
[INFO] [stdout]     |
[INFO] [stdout] 140 |     let insn = Instruction::new("insn", &fmt, &microcode);
[INFO] [stdout]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_insn`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `insn`
[INFO] [stdout]    --> tests/insn_tests.rs:149:9
[INFO] [stdout]     |
[INFO] [stdout] 149 |     let insn = Instruction::new("insn", &fmt, &microcode);
[INFO] [stdout]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_insn`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.65s
[INFO] running `Command { std: "docker" "inspect" "1b3d8f763fd4d140da74d2ebd15a5e1d10b6716651e347b4eff37ba8e0677f7b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1b3d8f763fd4d140da74d2ebd15a5e1d10b6716651e347b4eff37ba8e0677f7b", kill_on_drop: false }`
[INFO] [stdout] 1b3d8f763fd4d140da74d2ebd15a5e1d10b6716651e347b4eff37ba8e0677f7b