[INFO] fetching crate virmin 0.3.0...
[INFO] checking virmin-0.3.0 against master#7702ae16a23407cdd909ff9174294563ae1f4ba3 for pr-97183
[INFO] extracting crate virmin 0.3.0 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate virmin 0.3.0 on toolchain 7702ae16a23407cdd909ff9174294563ae1f4ba3
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7702ae16a23407cdd909ff9174294563ae1f4ba3" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[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-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7702ae16a23407cdd909ff9174294563ae1f4ba3" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7702ae16a23407cdd909ff9174294563ae1f4ba3" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:ac0d0aa6ec8ed129e241004a6179c99fa0d2616f50ba759c5b60bd26d0fafa02" "/opt/rustwide/cargo-home/bin/cargo" "+7702ae16a23407cdd909ff9174294563ae1f4ba3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f2ab8519cc4050318d68321e5c6d9399605e21bad067c205c02002cd591f48ad
[INFO] running `Command { std: "docker" "start" "-a" "f2ab8519cc4050318d68321e5c6d9399605e21bad067c205c02002cd591f48ad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f2ab8519cc4050318d68321e5c6d9399605e21bad067c205c02002cd591f48ad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f2ab8519cc4050318d68321e5c6d9399605e21bad067c205c02002cd591f48ad", kill_on_drop: false }`
[INFO] [stdout] f2ab8519cc4050318d68321e5c6d9399605e21bad067c205c02002cd591f48ad
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "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:ac0d0aa6ec8ed129e241004a6179c99fa0d2616f50ba759c5b60bd26d0fafa02" "/opt/rustwide/cargo-home/bin/cargo" "+7702ae16a23407cdd909ff9174294563ae1f4ba3" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2c3979788ac39b6cfd04cd752f16838d62895d22310cfa6868a75b3de98bf09e
[INFO] running `Command { std: "docker" "start" "-a" "2c3979788ac39b6cfd04cd752f16838d62895d22310cfa6868a75b3de98bf09e", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling num-bigint v0.4.3
[INFO] [stderr]    Compiling num-iter v0.1.43
[INFO] [stderr]    Compiling num-rational v0.4.1
[INFO] [stderr]     Checking num-complex v0.4.2
[INFO] [stderr]     Checking num v0.4.0
[INFO] [stderr]     Checking virmin v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/machine.rs:211:6
[INFO] [stdout]     |
[INFO] [stdout] 211 |         _ => {
[INFO] [stdout]     |         ^
[INFO] [stdout]     |
[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]     |         ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_patterns)]` on by default
[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: `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: `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: `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: 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: 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: 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 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: 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: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[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] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.43s
[INFO] running `Command { std: "docker" "inspect" "2c3979788ac39b6cfd04cd752f16838d62895d22310cfa6868a75b3de98bf09e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2c3979788ac39b6cfd04cd752f16838d62895d22310cfa6868a75b3de98bf09e", kill_on_drop: false }`
[INFO] [stdout] 2c3979788ac39b6cfd04cd752f16838d62895d22310cfa6868a75b3de98bf09e