[INFO] cloning repository https://github.com/kaliumxyz/ctf-vm
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kaliumxyz/ctf-vm" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkaliumxyz%2Fctf-vm", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkaliumxyz%2Fctf-vm'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8d1797d4b6d554eae14e51eb9664168751273f4c
[INFO] testing kaliumxyz/ctf-vm against beta-2021-01-01 for beta-1.50-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkaliumxyz%2Fctf-vm" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/kaliumxyz/ctf-vm on toolchain beta-2021-01-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/kaliumxyz/ctf-vm
[INFO] finished tweaking git repo https://github.com/kaliumxyz/ctf-vm
[INFO] tweaked toml for git repo https://github.com/kaliumxyz/ctf-vm written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/kaliumxyz/ctf-vm already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "fetch" "--locked" "--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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 437e8bb708c7fb9349df4b147d2313744cad63ea300366725f2aebb67f6818c1
[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" "437e8bb708c7fb9349df4b147d2313744cad63ea300366725f2aebb67f6818c1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "437e8bb708c7fb9349df4b147d2313744cad63ea300366725f2aebb67f6818c1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "437e8bb708c7fb9349df4b147d2313744cad63ea300366725f2aebb67f6818c1", kill_on_drop: false }`
[INFO] [stdout] 437e8bb708c7fb9349df4b147d2313744cad63ea300366725f2aebb67f6818c1
[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=warn" "-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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6b8e9eb2b166ed3b8bacc1fb6ceda8c8de0ed39fb695d3508257c5680357e190
[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" "6b8e9eb2b166ed3b8bacc1fb6ceda8c8de0ed39fb695d3508257c5680357e190", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.66
[INFO] [stderr]    Compiling nix v0.16.1
[INFO] [stderr]    Compiling synacor v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::io::Read`
[INFO] [stdout]  --> src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::io::Read;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::util::*`
[INFO] [stdout]   --> src/main.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use crate::util::*;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::halt`
[INFO] [stdout]  --> src/opcode.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use crate::halt;
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::opcode::Code`
[INFO] [stdout]  --> src/debug/mod.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::opcode::Code;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `state`
[INFO] [stdout]    --> src/opcode.rs:139:17
[INFO] [stdout]     |
[INFO] [stdout] 139 | pub fn debug_op(state: &mut State, meta: &mut Meta, code: Code) {
[INFO] [stdout]     |                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_state`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `meta`
[INFO] [stdout]    --> src/opcode.rs:139:36
[INFO] [stdout]     |
[INFO] [stdout] 139 | pub fn debug_op(state: &mut State, meta: &mut Meta, code: Code) {
[INFO] [stdout]     |                                    ^^^^ help: if this is intentional, prefix it with an underscore: `_meta`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `code`
[INFO] [stdout]    --> src/opcode.rs:139:53
[INFO] [stdout]     |
[INFO] [stdout] 139 | pub fn debug_op(state: &mut State, meta: &mut Meta, code: Code) {
[INFO] [stdout]     |                                                     ^^^^ help: if this is intentional, prefix it with an underscore: `_code`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/vm.rs:77:13
[INFO] [stdout]    |
[INFO] [stdout] 77 |         let mut stack: Vec<u8> = save.drain(0..(sp * 2)).collect();
[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: function is never used: `debug_op`
[INFO] [stdout]    --> src/opcode.rs:139:8
[INFO] [stdout]     |
[INFO] [stdout] 139 | pub fn debug_op(state: &mut State, meta: &mut Meta, code: Code) {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 14.55s
[INFO] running `Command { std: "docker" "inspect" "6b8e9eb2b166ed3b8bacc1fb6ceda8c8de0ed39fb695d3508257c5680357e190", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6b8e9eb2b166ed3b8bacc1fb6ceda8c8de0ed39fb695d3508257c5680357e190", kill_on_drop: false }`
[INFO] [stdout] 6b8e9eb2b166ed3b8bacc1fb6ceda8c8de0ed39fb695d3508257c5680357e190
[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=warn" "-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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "test" "--frozen" "--no-run" "--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] 1b0895f35e79aa9dc6344e994f7b84d8acf5f45ee15fd680fe7dc4f97cf4465d
[INFO] running `Command { std: "docker" "start" "-a" "1b0895f35e79aa9dc6344e994f7b84d8acf5f45ee15fd680fe7dc4f97cf4465d", kill_on_drop: false }`
[INFO] [stderr]    Compiling synacor v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::io::Read`
[INFO] [stdout]  --> src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::io::Read;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::util::*`
[INFO] [stdout]   --> src/main.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use crate::util::*;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::halt`
[INFO] [stdout]  --> src/opcode.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use crate::halt;
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::opcode::Code`
[INFO] [stdout]  --> src/debug/mod.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::opcode::Code;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `state`
[INFO] [stdout]    --> src/opcode.rs:139:17
[INFO] [stdout]     |
[INFO] [stdout] 139 | pub fn debug_op(state: &mut State, meta: &mut Meta, code: Code) {
[INFO] [stdout]     |                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_state`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `meta`
[INFO] [stdout]    --> src/opcode.rs:139:36
[INFO] [stdout]     |
[INFO] [stdout] 139 | pub fn debug_op(state: &mut State, meta: &mut Meta, code: Code) {
[INFO] [stdout]     |                                    ^^^^ help: if this is intentional, prefix it with an underscore: `_meta`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `code`
[INFO] [stdout]    --> src/opcode.rs:139:53
[INFO] [stdout]     |
[INFO] [stdout] 139 | pub fn debug_op(state: &mut State, meta: &mut Meta, code: Code) {
[INFO] [stdout]     |                                                     ^^^^ help: if this is intentional, prefix it with an underscore: `_code`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/vm.rs:77:13
[INFO] [stdout]    |
[INFO] [stdout] 77 |         let mut stack: Vec<u8> = save.drain(0..(sp * 2)).collect();
[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: function is never used: `debug_op`
[INFO] [stdout]    --> src/opcode.rs:139:8
[INFO] [stdout]     |
[INFO] [stdout] 139 | pub fn debug_op(state: &mut State, meta: &mut Meta, code: Code) {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.80s
[INFO] running `Command { std: "docker" "inspect" "1b0895f35e79aa9dc6344e994f7b84d8acf5f45ee15fd680fe7dc4f97cf4465d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1b0895f35e79aa9dc6344e994f7b84d8acf5f45ee15fd680fe7dc4f97cf4465d", kill_on_drop: false }`
[INFO] [stdout] 1b0895f35e79aa9dc6344e994f7b84d8acf5f45ee15fd680fe7dc4f97cf4465d
[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=warn" "-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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] f088d68526c55ce2c28bce4e24d7013d4febd4de2ab64f31b58557056815a296
[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" "f088d68526c55ce2c28bce4e24d7013d4febd4de2ab64f31b58557056815a296", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `std::io::Read`
[INFO] [stderr]  --> src/main.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::io::Read;
[INFO] [stderr]   |     ^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::util::*`
[INFO] [stderr]   --> src/main.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 | use crate::util::*;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::halt`
[INFO] [stderr]  --> src/opcode.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use crate::halt;
[INFO] [stderr]   |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::opcode::Code`
[INFO] [stderr]  --> src/debug/mod.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use crate::opcode::Code;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `state`
[INFO] [stderr]    --> src/opcode.rs:139:17
[INFO] [stderr]     |
[INFO] [stderr] 139 | pub fn debug_op(state: &mut State, meta: &mut Meta, code: Code) {
[INFO] [stderr]     |                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_state`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `meta`
[INFO] [stderr]    --> src/opcode.rs:139:36
[INFO] [stderr]     |
[INFO] [stderr] 139 | pub fn debug_op(state: &mut State, meta: &mut Meta, code: Code) {
[INFO] [stderr]     |                                    ^^^^ help: if this is intentional, prefix it with an underscore: `_meta`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `code`
[INFO] [stderr]    --> src/opcode.rs:139:53
[INFO] [stderr]     |
[INFO] [stderr] 139 | pub fn debug_op(state: &mut State, meta: &mut Meta, code: Code) {
[INFO] [stderr]     |                                                     ^^^^ help: if this is intentional, prefix it with an underscore: `_code`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/vm.rs:77:13
[INFO] [stderr]    |
[INFO] [stderr] 77 |         let mut stack: Vec<u8> = save.drain(0..(sp * 2)).collect();
[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: function is never used: `debug_op`
[INFO] [stderr]    --> src/opcode.rs:139:8
[INFO] [stderr]     |
[INFO] [stderr] 139 | pub fn debug_op(state: &mut State, meta: &mut Meta, code: Code) {
[INFO] [stderr]     |        ^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 9 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/synacor-0098a850d4362e5f
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "f088d68526c55ce2c28bce4e24d7013d4febd4de2ab64f31b58557056815a296", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f088d68526c55ce2c28bce4e24d7013d4febd4de2ab64f31b58557056815a296", kill_on_drop: false }`
[INFO] [stdout] f088d68526c55ce2c28bce4e24d7013d4febd4de2ab64f31b58557056815a296