[INFO] cloning repository https://github.com/kriw/regex_vm
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kriw/regex_vm" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkriw%2Fregex_vm", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkriw%2Fregex_vm'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1d17f3a5917b967c4fcded7bd4200de23d708166
[INFO] testing kriw/regex_vm against try#eafdee2dfae8c2233b74f98b123308be7ccefcc6 for pr-79296
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkriw%2Fregex_vm" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/kriw/regex_vm on toolchain eafdee2dfae8c2233b74f98b123308be7ccefcc6
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/kriw/regex_vm
[INFO] finished tweaking git repo https://github.com/kriw/regex_vm
[INFO] tweaked toml for git repo https://github.com/kriw/regex_vm written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/kriw/regex_vm already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5097cd6079bc62f3716466e07318f32226d4e4654346da09b9fd7592c5d22a55
[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" "5097cd6079bc62f3716466e07318f32226d4e4654346da09b9fd7592c5d22a55", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5097cd6079bc62f3716466e07318f32226d4e4654346da09b9fd7592c5d22a55", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5097cd6079bc62f3716466e07318f32226d4e4654346da09b9fd7592c5d22a55", kill_on_drop: false }`
[INFO] [stdout] 5097cd6079bc62f3716466e07318f32226d4e4654346da09b9fd7592c5d22a55
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "build" "--frozen" "--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] 9696d43f57da0a5518db59454e1183578f19bae9f6d02973a71a7d8ebac5119f
[INFO] running `Command { std: "docker" "start" "-a" "9696d43f57da0a5518db59454e1183578f19bae9f6d02973a71a7d8ebac5119f", kill_on_drop: false }`
[INFO] [stderr]    Compiling regex_vm v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `parser::Ast`
[INFO] [stdout]  --> src/vm.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use parser::Ast;
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::thread`
[INFO] [stdout]  --> src/vm_ir.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::thread;
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `pc`
[INFO] [stdout]   --> src/vm.rs:51:17
[INFO] [stdout]    |
[INFO] [stdout] 51 |         Ir::Jmp(pc, pc_to) => vec![(pc_to, State::Run)],
[INFO] [stdout]    |                 ^^ help: if this is intentional, prefix it with an underscore: `_pc`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `pc`
[INFO] [stdout]   --> src/vm.rs:52:19
[INFO] [stdout]    |
[INFO] [stdout] 52 |         Ir::Split(pc, pc_to1, pc_to2) => vec![(pc_to1, State::Run), (pc_to2, State::Run)],
[INFO] [stdout]    |                   ^^ help: if this is intentional, prefix it with an underscore: `_pc`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/vm.rs:12:28
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub fn is_match(s: String, mut ir: Vec<Ir>) -> bool {
[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/vm_ir.rs:70:9
[INFO] [stdout]    |
[INFO] [stdout] 70 |     let mut code = compose(ast, &mut pc);
[INFO] [stdout]    |         ----^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Nop`
[INFO] [stdout]   --> src/vm_ir.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     Nop(PC),
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `dump`
[INFO] [stdout]   --> src/vm_ir.rs:76:8
[INFO] [stdout]    |
[INFO] [stdout] 76 | pub fn dump(irs: Vec<Ir>) {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.31s
[INFO] running `Command { std: "docker" "inspect" "9696d43f57da0a5518db59454e1183578f19bae9f6d02973a71a7d8ebac5119f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9696d43f57da0a5518db59454e1183578f19bae9f6d02973a71a7d8ebac5119f", kill_on_drop: false }`
[INFO] [stdout] 9696d43f57da0a5518db59454e1183578f19bae9f6d02973a71a7d8ebac5119f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f1b3beb95f124cf07f6cf8dd8980de21ad8714537c5a4b5b838e79bbaac2bc50
[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" "f1b3beb95f124cf07f6cf8dd8980de21ad8714537c5a4b5b838e79bbaac2bc50", kill_on_drop: false }`
[INFO] [stderr]    Compiling regex_vm v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `parser::Ast`
[INFO] [stdout]  --> src/vm.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use parser::Ast;
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::thread`
[INFO] [stdout]  --> src/vm_ir.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::thread;
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `pc`
[INFO] [stdout]   --> src/vm.rs:51:17
[INFO] [stdout]    |
[INFO] [stdout] 51 |         Ir::Jmp(pc, pc_to) => vec![(pc_to, State::Run)],
[INFO] [stdout]    |                 ^^ help: if this is intentional, prefix it with an underscore: `_pc`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `pc`
[INFO] [stdout]   --> src/vm.rs:52:19
[INFO] [stdout]    |
[INFO] [stdout] 52 |         Ir::Split(pc, pc_to1, pc_to2) => vec![(pc_to1, State::Run), (pc_to2, State::Run)],
[INFO] [stdout]    |                   ^^ help: if this is intentional, prefix it with an underscore: `_pc`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/vm.rs:12:28
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub fn is_match(s: String, mut ir: Vec<Ir>) -> bool {
[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/vm_ir.rs:70:9
[INFO] [stdout]    |
[INFO] [stdout] 70 |     let mut code = compose(ast, &mut pc);
[INFO] [stdout]    |         ----^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Nop`
[INFO] [stdout]   --> src/vm_ir.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     Nop(PC),
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `dump`
[INFO] [stdout]   --> src/vm_ir.rs:76:8
[INFO] [stdout]    |
[INFO] [stdout] 76 | pub fn dump(irs: Vec<Ir>) {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.94s
[INFO] running `Command { std: "docker" "inspect" "f1b3beb95f124cf07f6cf8dd8980de21ad8714537c5a4b5b838e79bbaac2bc50", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f1b3beb95f124cf07f6cf8dd8980de21ad8714537c5a4b5b838e79bbaac2bc50", kill_on_drop: false }`
[INFO] [stdout] f1b3beb95f124cf07f6cf8dd8980de21ad8714537c5a4b5b838e79bbaac2bc50
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "test" "--frozen", 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] bdd50c59613bd9d8809b1bd69cb5c08be6ecc11020859d390e402ab44c578629
[INFO] running `Command { std: "docker" "start" "-a" "bdd50c59613bd9d8809b1bd69cb5c08be6ecc11020859d390e402ab44c578629", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `parser::Ast`
[INFO] [stderr]  --> src/vm.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use parser::Ast;
[INFO] [stderr]   |     ^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::thread`
[INFO] [stderr]  --> src/vm_ir.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::thread;
[INFO] [stderr]   |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `pc`
[INFO] [stderr]   --> src/vm.rs:51:17
[INFO] [stderr]    |
[INFO] [stderr] 51 |         Ir::Jmp(pc, pc_to) => vec![(pc_to, State::Run)],
[INFO] [stderr]    |                 ^^ help: if this is intentional, prefix it with an underscore: `_pc`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `pc`
[INFO] [stderr]   --> src/vm.rs:52:19
[INFO] [stderr]    |
[INFO] [stderr] 52 |         Ir::Split(pc, pc_to1, pc_to2) => vec![(pc_to1, State::Run), (pc_to2, State::Run)],
[INFO] [stderr]    |                   ^^ help: if this is intentional, prefix it with an underscore: `_pc`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/vm.rs:12:28
[INFO] [stderr]    |
[INFO] [stderr] 12 | pub fn is_match(s: String, mut ir: Vec<Ir>) -> bool {
[INFO] [stderr]    |                            ----^^
[INFO] [stderr]    |                            |
[INFO] [stderr]    |                            help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/vm_ir.rs:70:9
[INFO] [stderr]    |
[INFO] [stderr] 70 |     let mut code = compose(ast, &mut pc);
[INFO] [stderr]    |         ----^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Nop`
[INFO] [stderr]   --> src/vm_ir.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 |     Nop(PC),
[INFO] [stderr]    |     ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `dump`
[INFO] [stderr]   --> src/vm_ir.rs:76:8
[INFO] [stderr]    |
[INFO] [stderr] 76 | pub fn dump(irs: Vec<Ir>) {
[INFO] [stderr]    |        ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 8 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/regex_vm-c77eaa50b7a32f27
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test parser_test ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "bdd50c59613bd9d8809b1bd69cb5c08be6ecc11020859d390e402ab44c578629", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bdd50c59613bd9d8809b1bd69cb5c08be6ecc11020859d390e402ab44c578629", kill_on_drop: false }`
[INFO] [stdout] bdd50c59613bd9d8809b1bd69cb5c08be6ecc11020859d390e402ab44c578629