[INFO] cloning repository https://github.com/zxqcs/rusmachine
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/zxqcs/rusmachine" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzxqcs%2Frusmachine", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzxqcs%2Frusmachine'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5e85efd7bfb10c53e487ec44e27aff814146d6e2
[INFO] checking zxqcs/rusmachine against master#7dc9ff5c629753b6930ecfe9a0446538b8e25fb7 for pr-85387
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzxqcs%2Frusmachine" "/workspace/builds/worker-10/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-10/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/zxqcs/rusmachine on toolchain 7dc9ff5c629753b6930ecfe9a0446538b8e25fb7
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7dc9ff5c629753b6930ecfe9a0446538b8e25fb7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/zxqcs/rusmachine
[INFO] finished tweaking git repo https://github.com/zxqcs/rusmachine
[INFO] tweaked toml for git repo https://github.com/zxqcs/rusmachine written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate git repo https://github.com/zxqcs/rusmachine already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7dc9ff5c629753b6930ecfe9a0446538b8e25fb7" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+7dc9ff5c629753b6930ecfe9a0446538b8e25fb7" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c7d6310260aaca3d95e2f5ebd93ae2508f5e9047f893657d01bd8903db2f73d0
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "c7d6310260aaca3d95e2f5ebd93ae2508f5e9047f893657d01bd8903db2f73d0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c7d6310260aaca3d95e2f5ebd93ae2508f5e9047f893657d01bd8903db2f73d0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c7d6310260aaca3d95e2f5ebd93ae2508f5e9047f893657d01bd8903db2f73d0", kill_on_drop: false }`
[INFO] [stdout] c7d6310260aaca3d95e2f5ebd93ae2508f5e9047f893657d01bd8903db2f73d0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+7dc9ff5c629753b6930ecfe9a0446538b8e25fb7" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 87bff88a3ce63591b8df97288036fe0f2ebcbefcdd2aaac2b38ca106571d1c59
[INFO] running `Command { std: "docker" "start" "-a" "87bff88a3ce63591b8df97288036fe0f2ebcbefcdd2aaac2b38ca106571d1c59", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking machine v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `hash::Hash`
[INFO] [stdout]  --> src/basic_machine.rs:4:37
[INFO] [stdout]   |
[INFO] [stdout] 4 |     use std::{collections::HashMap, hash::Hash};
[INFO] [stdout]   |                                     ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `hash::Hash`
[INFO] [stdout]  --> src/basic_machine.rs:4:37
[INFO] [stdout]   |
[INFO] [stdout] 4 |     use std::{collections::HashMap, hash::Hash};
[INFO] [stdout]   |                                     ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Objects`
[INFO] [stdout]   --> src/representation.rs:58:30
[INFO] [stdout]    |
[INFO] [stdout] 58 |     use super::type_system::{Objects, ListObject, Pairs};
[INFO] [stdout]    |                              ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/representation.rs:43:17
[INFO] [stdout]    |
[INFO] [stdout] 43 |             for i in 0..size {
[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: variable does not need to be mutable
[INFO] [stdout]   --> src/representation.rs:39:17
[INFO] [stdout]    |
[INFO] [stdout] 39 |             let mut item = ListObject {
[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/representation.rs:46:17
[INFO] [stdout]    |
[INFO] [stdout] 46 |             let mut y = x.clone();
[INFO] [stdout]    |                 ----^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `BasicMachine`
[INFO] [stdout]  --> src/basic_machine.rs:6:16
[INFO] [stdout]   |
[INFO] [stdout] 6 |     pub struct BasicMachine<T> {
[INFO] [stdout]   |                ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `initilize_stack`
[INFO] [stdout]   --> src/basic_machine.rs:13:12
[INFO] [stdout]    |
[INFO] [stdout] 13 |         fn initilize_stack(&mut self) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `initilize_registers`
[INFO] [stdout]   --> src/basic_machine.rs:17:12
[INFO] [stdout]    |
[INFO] [stdout] 17 |         fn initilize_registers(&mut self) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `initialize_instruction_seq`
[INFO] [stdout]   --> src/basic_machine.rs:23:12
[INFO] [stdout]    |
[INFO] [stdout] 23 |         fn initialize_instruction_seq(&mut self) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `initilize_basic_machine`
[INFO] [stdout]   --> src/basic_machine.rs:27:16
[INFO] [stdout]    |
[INFO] [stdout] 27 |         pub fn initilize_basic_machine(&mut self) {
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Nummber`
[INFO] [stdout]  --> src/representation.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 |         Nummber(f32),
[INFO] [stdout]   |         ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Integer`
[INFO] [stdout]  --> src/representation.rs:8:9
[INFO] [stdout]   |
[INFO] [stdout] 8 |         Integer(i32),
[INFO] [stdout]   |         ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Symbol`
[INFO] [stdout]  --> src/representation.rs:9:9
[INFO] [stdout]   |
[INFO] [stdout] 9 |         Symbol(&'static str),
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Quote`
[INFO] [stdout]   --> src/representation.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 10 |         Quote(&'static str),
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Bool`
[INFO] [stdout]   --> src/representation.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 11 |         Bool(bool),
[INFO] [stdout]    |         ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: structure field `Item` should have a snake case name
[INFO] [stdout]   --> src/representation.rs:17:9
[INFO] [stdout]    |
[INFO] [stdout] 17 |         Item: Objects,
[INFO] [stdout]    |         ^^^^ help: convert the identifier to snake case (notice the capitalization): `item`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: structure field `Index` should have a snake case name
[INFO] [stdout]   --> src/representation.rs:18:9
[INFO] [stdout]    |
[INFO] [stdout] 18 |         Index: usize,
[INFO] [stdout]    |         ^^^^^ help: convert the identifier to snake case (notice the capitalization): `index`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/representation.rs:43:17
[INFO] [stdout]    |
[INFO] [stdout] 43 |             for i in 0..size {
[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: variable does not need to be mutable
[INFO] [stdout]   --> src/representation.rs:39:17
[INFO] [stdout]    |
[INFO] [stdout] 39 |             let mut item = ListObject {
[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/representation.rs:46:17
[INFO] [stdout]    |
[INFO] [stdout] 46 |             let mut y = x.clone();
[INFO] [stdout]    |                 ----^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/infrastructure.rs:49:16
[INFO] [stdout]    |
[INFO] [stdout] 49 |         pub fn new(s: &'static str) -> Self {
[INFO] [stdout]    |                ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get`
[INFO] [stdout]   --> src/infrastructure.rs:55:16
[INFO] [stdout]    |
[INFO] [stdout] 55 |         pub fn get(&self) -> &Item {
[INFO] [stdout]    |                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `set`
[INFO] [stdout]   --> src/infrastructure.rs:59:16
[INFO] [stdout]    |
[INFO] [stdout] 59 |         pub fn set(&mut self, val: Item) {
[INFO] [stdout]    |                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `pop`
[INFO] [stdout]   --> src/infrastructure.rs:89:16
[INFO] [stdout]    |
[INFO] [stdout] 89 |         pub fn pop(&mut self) -> Option<Item> {
[INFO] [stdout]    |                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `BasicMachine`
[INFO] [stdout]  --> src/basic_machine.rs:6:16
[INFO] [stdout]   |
[INFO] [stdout] 6 |     pub struct BasicMachine<T> {
[INFO] [stdout]   |                ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `initilize_stack`
[INFO] [stdout]   --> src/basic_machine.rs:13:12
[INFO] [stdout]    |
[INFO] [stdout] 13 |         fn initilize_stack(&mut self) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `initilize_registers`
[INFO] [stdout]   --> src/basic_machine.rs:17:12
[INFO] [stdout]    |
[INFO] [stdout] 17 |         fn initilize_registers(&mut self) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `initialize_instruction_seq`
[INFO] [stdout]   --> src/basic_machine.rs:23:12
[INFO] [stdout]    |
[INFO] [stdout] 23 |         fn initialize_instruction_seq(&mut self) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `initilize_basic_machine`
[INFO] [stdout]   --> src/basic_machine.rs:27:16
[INFO] [stdout]    |
[INFO] [stdout] 27 |         pub fn initilize_basic_machine(&mut self) {
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Nummber`
[INFO] [stdout]  --> src/representation.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 |         Nummber(f32),
[INFO] [stdout]   |         ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Integer`
[INFO] [stdout]  --> src/representation.rs:8:9
[INFO] [stdout]   |
[INFO] [stdout] 8 |         Integer(i32),
[INFO] [stdout]   |         ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Symbol`
[INFO] [stdout]  --> src/representation.rs:9:9
[INFO] [stdout]   |
[INFO] [stdout] 9 |         Symbol(&'static str),
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Quote`
[INFO] [stdout]   --> src/representation.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 10 |         Quote(&'static str),
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Bool`
[INFO] [stdout]   --> src/representation.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 11 |         Bool(bool),
[INFO] [stdout]    |         ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Nil`
[INFO] [stdout]   --> src/representation.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 12 |         Nil,
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/representation.rs:22:16
[INFO] [stdout]    |
[INFO] [stdout] 22 |         pub fn new() -> Self {
[INFO] [stdout]    |                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Pairs`
[INFO] [stdout]   --> src/representation.rs:29:16
[INFO] [stdout]    |
[INFO] [stdout] 29 |     pub struct Pairs {
[INFO] [stdout]    |                ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/representation.rs:36:16
[INFO] [stdout]    |
[INFO] [stdout] 36 |         pub fn new() -> Self {
[INFO] [stdout]    |                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: structure field `Item` should have a snake case name
[INFO] [stdout]   --> src/representation.rs:17:9
[INFO] [stdout]    |
[INFO] [stdout] 17 |         Item: Objects,
[INFO] [stdout]    |         ^^^^ help: convert the identifier to snake case (notice the capitalization): `item`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: structure field `Index` should have a snake case name
[INFO] [stdout]   --> src/representation.rs:18:9
[INFO] [stdout]    |
[INFO] [stdout] 18 |         Index: usize,
[INFO] [stdout]    |         ^^^^^ help: convert the identifier to snake case (notice the capitalization): `index`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 17 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 24 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.35s
[INFO] running `Command { std: "docker" "inspect" "87bff88a3ce63591b8df97288036fe0f2ebcbefcdd2aaac2b38ca106571d1c59", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "87bff88a3ce63591b8df97288036fe0f2ebcbefcdd2aaac2b38ca106571d1c59", kill_on_drop: false }`
[INFO] [stdout] 87bff88a3ce63591b8df97288036fe0f2ebcbefcdd2aaac2b38ca106571d1c59