[INFO] cloning repository https://github.com/tkclimb/hack-vm
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tkclimb/hack-vm" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftkclimb%2Fhack-vm", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftkclimb%2Fhack-vm'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e1feedd1d7e444ae43a3419fd223de1b94d590c6
[INFO] checking tkclimb/hack-vm against beta for pr-78714
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftkclimb%2Fhack-vm" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/tkclimb/hack-vm on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/tkclimb/hack-vm
[INFO] finished tweaking git repo https://github.com/tkclimb/hack-vm
[INFO] tweaked toml for git repo https://github.com/tkclimb/hack-vm written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/tkclimb/hack-vm already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 786df6b5f9715eea5273c8e9c506a94620ae4ba8af6ed4d6e6679d529ef1e77b
[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" "786df6b5f9715eea5273c8e9c506a94620ae4ba8af6ed4d6e6679d529ef1e77b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "786df6b5f9715eea5273c8e9c506a94620ae4ba8af6ed4d6e6679d529ef1e77b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "786df6b5f9715eea5273c8e9c506a94620ae4ba8af6ed4d6e6679d529ef1e77b", kill_on_drop: false }`
[INFO] [stdout] 786df6b5f9715eea5273c8e9c506a94620ae4ba8af6ed4d6e6679d529ef1e77b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a83a2eb2ac918fc8c756d0d3b7440f0575da701b49bb93ac4952d8e7824ffbfa
[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" "a83a2eb2ac918fc8c756d0d3b7440f0575da701b49bb93ac4952d8e7824ffbfa", kill_on_drop: false }`
[INFO] [stderr]     Checking hack-vm v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::fs::File`
[INFO] [stdout]  --> src/scanner.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::fs::File;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `BufReader`
[INFO] [stdout]  --> src/scanner.rs:3:24
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::io::{BufRead, BufReader};
[INFO] [stdout]   |                        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `TokenKind::*`
[INFO] [stdout]   --> src/token.rs:28:5
[INFO] [stdout]    |
[INFO] [stdout] 28 | use TokenKind::*;
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `BufRead`
[INFO] [stdout]   --> src/main.rs:10:15
[INFO] [stdout]    |
[INFO] [stdout] 10 | use std::io::{BufRead, BufReader, BufWriter};
[INFO] [stdout]    |               ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fs::File`
[INFO] [stdout]  --> src/scanner.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::fs::File;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `BufReader`
[INFO] [stdout]  --> src/scanner.rs:3:24
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::io::{BufRead, BufReader};
[INFO] [stdout]   |                        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `TokenKind::*`
[INFO] [stdout]   --> src/token.rs:28:5
[INFO] [stdout]    |
[INFO] [stdout] 28 | use TokenKind::*;
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `BufRead`
[INFO] [stdout]   --> src/main.rs:10:15
[INFO] [stdout]    |
[INFO] [stdout] 10 | use std::io::{BufRead, BufReader, BufWriter};
[INFO] [stdout]    |               ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Static`
[INFO] [stdout]  --> src/ast.rs:5:3
[INFO] [stdout]   |
[INFO] [stdout] 5 |   Static,
[INFO] [stdout]   |   ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Pointer`
[INFO] [stdout]  --> src/ast.rs:9:3
[INFO] [stdout]   |
[INFO] [stdout] 9 |   Pointer,
[INFO] [stdout]   |   ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Sub`
[INFO] [stdout]   --> src/ast.rs:25:3
[INFO] [stdout]    |
[INFO] [stdout] 25 |   Sub,
[INFO] [stdout]    |   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `parse_num`
[INFO] [stdout]    --> src/scanner.rs:155:6
[INFO] [stdout]     |
[INFO] [stdout] 155 |   fn parse_num(&mut self) -> Option<u32> {
[INFO] [stdout]     |      ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `last`
[INFO] [stdout]    --> src/scanner.rs:181:6
[INFO] [stdout]     |
[INFO] [stdout] 181 |   fn last(&mut self) -> Option<char> {
[INFO] [stdout]     |      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `next`
[INFO] [stdout]    --> src/scanner.rs:185:6
[INFO] [stdout]     |
[INFO] [stdout] 185 |   fn next(&mut self) -> Option<char> {
[INFO] [stdout]     |      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Sub`
[INFO] [stdout]  --> src/token.rs:8:3
[INFO] [stdout]   |
[INFO] [stdout] 8 |   Sub,
[INFO] [stdout]   |   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Argment`
[INFO] [stdout]   --> src/token.rs:10:3
[INFO] [stdout]    |
[INFO] [stdout] 10 |   Argment,
[INFO] [stdout]    |   ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `This`
[INFO] [stdout]   --> src/token.rs:14:3
[INFO] [stdout]    |
[INFO] [stdout] 14 |   This,
[INFO] [stdout]    |   ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `That`
[INFO] [stdout]   --> src/token.rs:15:3
[INFO] [stdout]    |
[INFO] [stdout] 15 |   That,
[INFO] [stdout]    |   ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Pointer`
[INFO] [stdout]   --> src/token.rs:16:3
[INFO] [stdout]    |
[INFO] [stdout] 16 |   Pointer,
[INFO] [stdout]    |   ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Temp`
[INFO] [stdout]   --> src/token.rs:17:3
[INFO] [stdout]    |
[INFO] [stdout] 17 |   Temp,
[INFO] [stdout]    |   ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Eof`
[INFO] [stdout]   --> src/token.rs:20:3
[INFO] [stdout]    |
[INFO] [stdout] 20 |   Eof,
[INFO] [stdout]    |   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `word_size` should have an upper case name
[INFO] [stdout]  --> src/codegen.rs:3:7
[INFO] [stdout]   |
[INFO] [stdout] 3 | const word_size: i32 = 4;
[INFO] [stdout]   |       ^^^^^^^^^ help: convert the identifier to upper case: `WORD_SIZE`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_upper_case_globals)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `constant_segment_size` should have an upper case name
[INFO] [stdout]  --> src/codegen.rs:4:7
[INFO] [stdout]   |
[INFO] [stdout] 4 | const constant_segment_size: i32 = 10;
[INFO] [stdout]   |       ^^^^^^^^^^^^^^^^^^^^^ help: convert the identifier to upper case: `CONSTANT_SEGMENT_SIZE`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `local_segment_size` should have an upper case name
[INFO] [stdout]  --> src/codegen.rs:5:7
[INFO] [stdout]   |
[INFO] [stdout] 5 | const local_segment_size: i32 = 100;
[INFO] [stdout]   |       ^^^^^^^^^^^^^^^^^^ help: convert the identifier to upper case: `LOCAL_SEGMENT_SIZE`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `static_segment_size` should have an upper case name
[INFO] [stdout]  --> src/codegen.rs:6:7
[INFO] [stdout]   |
[INFO] [stdout] 6 | const static_segment_size: i32 = 100;
[INFO] [stdout]   |       ^^^^^^^^^^^^^^^^^^^ help: convert the identifier to upper case: `STATIC_SEGMENT_SIZE`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Static`
[INFO] [stdout]  --> src/ast.rs:5:3
[INFO] [stdout]   |
[INFO] [stdout] 5 |   Static,
[INFO] [stdout]   |   ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Pointer`
[INFO] [stdout]  --> src/ast.rs:9:3
[INFO] [stdout]   |
[INFO] [stdout] 9 |   Pointer,
[INFO] [stdout]   |   ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Sub`
[INFO] [stdout]   --> src/ast.rs:25:3
[INFO] [stdout]    |
[INFO] [stdout] 25 |   Sub,
[INFO] [stdout]    |   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `parse_num`
[INFO] [stdout]    --> src/scanner.rs:155:6
[INFO] [stdout]     |
[INFO] [stdout] 155 |   fn parse_num(&mut self) -> Option<u32> {
[INFO] [stdout]     |      ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `last`
[INFO] [stdout]    --> src/scanner.rs:181:6
[INFO] [stdout]     |
[INFO] [stdout] 181 |   fn last(&mut self) -> Option<char> {
[INFO] [stdout]     |      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `next`
[INFO] [stdout]    --> src/scanner.rs:185:6
[INFO] [stdout]     |
[INFO] [stdout] 185 |   fn next(&mut self) -> Option<char> {
[INFO] [stdout]     |      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Sub`
[INFO] [stdout]  --> src/token.rs:8:3
[INFO] [stdout]   |
[INFO] [stdout] 8 |   Sub,
[INFO] [stdout]   |   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Argment`
[INFO] [stdout]   --> src/token.rs:10:3
[INFO] [stdout]    |
[INFO] [stdout] 10 |   Argment,
[INFO] [stdout]    |   ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `This`
[INFO] [stdout]   --> src/token.rs:14:3
[INFO] [stdout]    |
[INFO] [stdout] 14 |   This,
[INFO] [stdout]    |   ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `That`
[INFO] [stdout]   --> src/token.rs:15:3
[INFO] [stdout]    |
[INFO] [stdout] 15 |   That,
[INFO] [stdout]    |   ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Pointer`
[INFO] [stdout]   --> src/token.rs:16:3
[INFO] [stdout]    |
[INFO] [stdout] 16 |   Pointer,
[INFO] [stdout]    |   ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Temp`
[INFO] [stdout]   --> src/token.rs:17:3
[INFO] [stdout]    |
[INFO] [stdout] 17 |   Temp,
[INFO] [stdout]    |   ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Eof`
[INFO] [stdout]   --> src/token.rs:20:3
[INFO] [stdout]    |
[INFO] [stdout] 20 |   Eof,
[INFO] [stdout]    |   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `word_size` should have an upper case name
[INFO] [stdout]  --> src/codegen.rs:3:7
[INFO] [stdout]   |
[INFO] [stdout] 3 | const word_size: i32 = 4;
[INFO] [stdout]   |       ^^^^^^^^^ help: convert the identifier to upper case: `WORD_SIZE`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_upper_case_globals)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `constant_segment_size` should have an upper case name
[INFO] [stdout]  --> src/codegen.rs:4:7
[INFO] [stdout]   |
[INFO] [stdout] 4 | const constant_segment_size: i32 = 10;
[INFO] [stdout]   |       ^^^^^^^^^^^^^^^^^^^^^ help: convert the identifier to upper case: `CONSTANT_SEGMENT_SIZE`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `local_segment_size` should have an upper case name
[INFO] [stdout]  --> src/codegen.rs:5:7
[INFO] [stdout]   |
[INFO] [stdout] 5 | const local_segment_size: i32 = 100;
[INFO] [stdout]   |       ^^^^^^^^^^^^^^^^^^ help: convert the identifier to upper case: `LOCAL_SEGMENT_SIZE`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `static_segment_size` should have an upper case name
[INFO] [stdout]  --> src/codegen.rs:6:7
[INFO] [stdout]   |
[INFO] [stdout] 6 | const static_segment_size: i32 = 100;
[INFO] [stdout]   |       ^^^^^^^^^^^^^^^^^^^ help: convert the identifier to upper case: `STATIC_SEGMENT_SIZE`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 21 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 21 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.81s
[INFO] running `Command { std: "docker" "inspect" "a83a2eb2ac918fc8c756d0d3b7440f0575da701b49bb93ac4952d8e7824ffbfa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a83a2eb2ac918fc8c756d0d3b7440f0575da701b49bb93ac4952d8e7824ffbfa", kill_on_drop: false }`
[INFO] [stdout] a83a2eb2ac918fc8c756d0d3b7440f0575da701b49bb93ac4952d8e7824ffbfa