[INFO] cloning repository https://github.com/jbalintbiro/vm
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jbalintbiro/vm" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjbalintbiro%2Fvm", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjbalintbiro%2Fvm'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 98ddb3a3707b705cbbbaf0d88a13f223b5d13627
[INFO] checking jbalintbiro/vm against try#45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4 for pr-83744
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjbalintbiro%2Fvm" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jbalintbiro/vm on toolchain 45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/jbalintbiro/vm
[INFO] finished tweaking git repo https://github.com/jbalintbiro/vm
[INFO] tweaked toml for git repo https://github.com/jbalintbiro/vm written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/jbalintbiro/vm already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 17be3a7a6313347183a07ae6ef256bb25f078fc27bd91f05f92698c9a3391b9c
[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" "17be3a7a6313347183a07ae6ef256bb25f078fc27bd91f05f92698c9a3391b9c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "17be3a7a6313347183a07ae6ef256bb25f078fc27bd91f05f92698c9a3391b9c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "17be3a7a6313347183a07ae6ef256bb25f078fc27bd91f05f92698c9a3391b9c", kill_on_drop: false }`
[INFO] [stdout] 17be3a7a6313347183a07ae6ef256bb25f078fc27bd91f05f92698c9a3391b9c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] dff1768cf2b869740a65dc6d28f581652bf69a85211e43932d323a14f6479626
[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" "dff1768cf2b869740a65dc6d28f581652bf69a85211e43932d323a14f6479626", kill_on_drop: false }`
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling num-traits v0.2.4
[INFO] [stderr]    Compiling maplit v1.0.1
[INFO] [stderr]     Checking machine-spec v0.1.0 (/opt/rustwide/workdir/machine-spec)
[INFO] [stderr]     Checking asm v0.1.0 (/opt/rustwide/workdir/asm)
[INFO] [stderr]    Compiling proc-macro2 v0.4.6
[INFO] [stderr]     Checking quote v0.6.3
[INFO] [stderr]     Checking syn v0.14.2
[INFO] [stderr]     Checking variant_derive v0.1.0 (/opt/rustwide/workdir/variant_derive)
[INFO] [stdout] warning: unused import: `Fields`
[INFO] [stdout]  --> variant_derive/src/lib.rs:7:30
[INFO] [stdout]   |
[INFO] [stdout] 7 | use syn::{DeriveInput, Data, Fields};
[INFO] [stdout]   |                              ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Fields`
[INFO] [stdout]  --> variant_derive/src/lib.rs:7:30
[INFO] [stdout]   |
[INFO] [stdout] 7 | use syn::{DeriveInput, Data, Fields};
[INFO] [stdout]   |                              ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling num-derive v0.2.2
[INFO] [stdout] warning: unused import: `Fields`
[INFO] [stdout]  --> variant_derive/src/lib.rs:7:30
[INFO] [stdout]   |
[INFO] [stdout] 7 | use syn::{DeriveInput, Data, Fields};
[INFO] [stdout]   |                              ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling instruction_parts v0.1.0 (/opt/rustwide/workdir/instruction_parts)
[INFO] [stderr]     Checking instruction_codec_derive v0.1.0 (/opt/rustwide/workdir/instruction_codec_derive)
[INFO] [stdout] warning: unused variable: `layout`
[INFO] [stdout]   --> instruction_codec_derive/src/lib.rs:13:9
[INFO] [stdout]    |
[INFO] [stdout] 13 |     let layout = gen_layout(&ast.data);
[INFO] [stdout]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_layout`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `data`
[INFO] [stdout]   --> instruction_codec_derive/src/lib.rs:39:15
[INFO] [stdout]    |
[INFO] [stdout] 39 | fn gen_layout(data: &syn::Data) -> Layout {
[INFO] [stdout]    |               ^^^^ help: if this is intentional, prefix it with an underscore: `_data`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `ARG_TYPES`
[INFO] [stdout]   --> instruction_codec_derive/src/lib.rs:30:1
[INFO] [stdout]    |
[INFO] [stdout] 30 | / const ARG_TYPES: &[(&str, u32, bool)] = &[
[INFO] [stdout] 31 | |     ("Reg", 4, false),
[INFO] [stdout] 32 | |     ("Immediate", 4, true),
[INFO] [stdout] 33 | |     ("RegOrImmediate", 4, true),
[INFO] [stdout] 34 | |     ("SpecialRegister", 16, false),
[INFO] [stdout] 35 | | ];
[INFO] [stdout]    | |__^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `layout`
[INFO] [stdout]   --> instruction_codec_derive/src/lib.rs:13:9
[INFO] [stdout]    |
[INFO] [stdout] 13 |     let layout = gen_layout(&ast.data);
[INFO] [stdout]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_layout`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `data`
[INFO] [stdout]   --> instruction_codec_derive/src/lib.rs:39:15
[INFO] [stdout]    |
[INFO] [stdout] 39 | fn gen_layout(data: &syn::Data) -> Layout {
[INFO] [stdout]    |               ^^^^ help: if this is intentional, prefix it with an underscore: `_data`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `ARG_TYPES`
[INFO] [stdout]   --> instruction_codec_derive/src/lib.rs:30:1
[INFO] [stdout]    |
[INFO] [stdout] 30 | / const ARG_TYPES: &[(&str, u32, bool)] = &[
[INFO] [stdout] 31 | |     ("Reg", 4, false),
[INFO] [stdout] 32 | |     ("Immediate", 4, true),
[INFO] [stdout] 33 | |     ("RegOrImmediate", 4, true),
[INFO] [stdout] 34 | |     ("SpecialRegister", 16, false),
[INFO] [stdout] 35 | | ];
[INFO] [stdout]    | |__^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `layout`
[INFO] [stdout]   --> instruction_codec_derive/src/lib.rs:13:9
[INFO] [stdout]    |
[INFO] [stdout] 13 |     let layout = gen_layout(&ast.data);
[INFO] [stdout]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_layout`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `data`
[INFO] [stdout]   --> instruction_codec_derive/src/lib.rs:39:15
[INFO] [stdout]    |
[INFO] [stdout] 39 | fn gen_layout(data: &syn::Data) -> Layout {
[INFO] [stdout]    |               ^^^^ help: if this is intentional, prefix it with an underscore: `_data`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `ARG_TYPES`
[INFO] [stdout]   --> instruction_codec_derive/src/lib.rs:30:1
[INFO] [stdout]    |
[INFO] [stdout] 30 | / const ARG_TYPES: &[(&str, u32, bool)] = &[
[INFO] [stdout] 31 | |     ("Reg", 4, false),
[INFO] [stdout] 32 | |     ("Immediate", 4, true),
[INFO] [stdout] 33 | |     ("RegOrImmediate", 4, true),
[INFO] [stdout] 34 | |     ("SpecialRegister", 16, false),
[INFO] [stdout] 35 | | ];
[INFO] [stdout]    | |__^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking inst v0.1.0 (/opt/rustwide/workdir/inst)
[INFO] [stdout] warning: constant is never used: `FULL`
[INFO] [stdout]   --> inst/src/lib.rs:51:1
[INFO] [stdout]    |
[INFO] [stdout] 51 | const FULL: u32 = 0xFFFF_FFFF;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `mask`
[INFO] [stdout]   --> inst/src/lib.rs:53:4
[INFO] [stdout]    |
[INFO] [stdout] 53 | fn mask(start: u32, len: u32) -> u32 {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `get_bits`
[INFO] [stdout]   --> inst/src/lib.rs:65:4
[INFO] [stdout]    |
[INFO] [stdout] 65 | fn get_bits(word: u32, start: u32, len: u32) -> u32 {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `get_bits_signed`
[INFO] [stdout]   --> inst/src/lib.rs:69:4
[INFO] [stdout]    |
[INFO] [stdout] 69 | fn get_bits_signed(word: u32, start: u32, len: u32) -> i32 {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `set_bits`
[INFO] [stdout]   --> inst/src/lib.rs:73:4
[INFO] [stdout]    |
[INFO] [stdout] 73 | fn set_bits(v: u32, word: u32, start: u32, len: u32) -> u32 {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `sign_extend`
[INFO] [stdout]   --> inst/src/lib.rs:80:4
[INFO] [stdout]    |
[INFO] [stdout] 80 | fn sign_extend(word: u32, len: u32) -> i32 {
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking vm v0.1.0 (/opt/rustwide/workdir/vm)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 21.79s
[INFO] running `Command { std: "docker" "inspect" "dff1768cf2b869740a65dc6d28f581652bf69a85211e43932d323a14f6479626", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dff1768cf2b869740a65dc6d28f581652bf69a85211e43932d323a14f6479626", kill_on_drop: false }`
[INFO] [stdout] dff1768cf2b869740a65dc6d28f581652bf69a85211e43932d323a14f6479626