[INFO] cloning repository https://github.com/jasondew/synacor-challenge
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jasondew/synacor-challenge" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjasondew%2Fsynacor-challenge", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjasondew%2Fsynacor-challenge'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] bda8780ea396bdb6719acb10de97a30a3e22c8f2
[INFO] testing jasondew/synacor-challenge against master#a77da2d454e6caa227a85b16410b95f93495e7e0 for pr-91031
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjasondew%2Fsynacor-challenge" "/workspace/builds/worker-19/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-19/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jasondew/synacor-challenge on toolchain a77da2d454e6caa227a85b16410b95f93495e7e0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/jasondew/synacor-challenge
[INFO] finished tweaking git repo https://github.com/jasondew/synacor-challenge
[INFO] tweaked toml for git repo https://github.com/jasondew/synacor-challenge written to /workspace/builds/worker-19/source/Cargo.toml
[INFO] crate git repo https://github.com/jasondew/synacor-challenge already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d8db956c93f817143c97f72f3409a2bd0711a901c7d565debb98c366fedf3a36
[INFO] running `Command { std: "docker" "start" "-a" "d8db956c93f817143c97f72f3409a2bd0711a901c7d565debb98c366fedf3a36", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d8db956c93f817143c97f72f3409a2bd0711a901c7d565debb98c366fedf3a36", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d8db956c93f817143c97f72f3409a2bd0711a901c7d565debb98c366fedf3a36", kill_on_drop: false }`
[INFO] [stdout] d8db956c93f817143c97f72f3409a2bd0711a901c7d565debb98c366fedf3a36
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5b957b57237e971789ccf915dd73ad47aed50db8c2a18dcabddb713b014ae6d6
[INFO] running `Command { std: "docker" "start" "-a" "5b957b57237e971789ccf915dd73ad47aed50db8c2a18dcabddb713b014ae6d6", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling rand_core v0.4.2
[INFO] [stderr]    Compiling autocfg v0.1.7
[INFO] [stderr]    Compiling libc v0.2.81
[INFO] [stderr]    Compiling rand_core v0.3.1
[INFO] [stderr]    Compiling rand_jitter v0.1.4
[INFO] [stderr]    Compiling rand_xorshift v0.1.1
[INFO] [stderr]    Compiling rand_isaac v0.1.1
[INFO] [stderr]    Compiling rand_hc v0.1.0
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling rand_os v0.1.3
[INFO] [stderr]    Compiling synacor_challenge v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/bin/disassembler.rs:85:5
[INFO] [stdout]    |
[INFO] [stdout] 25 | /     loop {
[INFO] [stdout] 26 | |         print!("{}: ", vm.get_ip());
[INFO] [stdout] 27 | |         match vm.get_next_operation() {
[INFO] [stdout] 28 | |             Ok(operation) => {
[INFO] [stdout] ...  |
[INFO] [stdout] 82 | |         }
[INFO] [stdout] 83 | |     }
[INFO] [stdout]    | |_____- any code following this expression is unreachable
[INFO] [stdout] 84 | 
[INFO] [stdout] 85 |       Ok(())
[INFO] [stdout]    |       ^^^^^^ unreachable expression
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 35.59s
[INFO] running `Command { std: "docker" "inspect" "5b957b57237e971789ccf915dd73ad47aed50db8c2a18dcabddb713b014ae6d6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5b957b57237e971789ccf915dd73ad47aed50db8c2a18dcabddb713b014ae6d6", kill_on_drop: false }`
[INFO] [stdout] 5b957b57237e971789ccf915dd73ad47aed50db8c2a18dcabddb713b014ae6d6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e86ffb08a68e308ad7d5957e28bb943169e3e124834838793e7c1383c51bd0fa
[INFO] running `Command { std: "docker" "start" "-a" "e86ffb08a68e308ad7d5957e28bb943169e3e124834838793e7c1383c51bd0fa", kill_on_drop: false }`
[INFO] [stderr]    Compiling synacor_challenge v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/bin/disassembler.rs:85:5
[INFO] [stdout]    |
[INFO] [stdout] 25 | /     loop {
[INFO] [stdout] 26 | |         print!("{}: ", vm.get_ip());
[INFO] [stdout] 27 | |         match vm.get_next_operation() {
[INFO] [stdout] 28 | |             Ok(operation) => {
[INFO] [stdout] ...  |
[INFO] [stdout] 82 | |         }
[INFO] [stdout] 83 | |     }
[INFO] [stdout]    | |_____- any code following this expression is unreachable
[INFO] [stdout] 84 | 
[INFO] [stdout] 85 |       Ok(())
[INFO] [stdout]    |       ^^^^^^ unreachable expression
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.48s
[INFO] running `Command { std: "docker" "inspect" "e86ffb08a68e308ad7d5957e28bb943169e3e124834838793e7c1383c51bd0fa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e86ffb08a68e308ad7d5957e28bb943169e3e124834838793e7c1383c51bd0fa", kill_on_drop: false }`
[INFO] [stdout] e86ffb08a68e308ad7d5957e28bb943169e3e124834838793e7c1383c51bd0fa
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 93fc5f01d343ce94b8c2b3d41944463375cf8679f6207073cfe4ef92ab23361f
[INFO] running `Command { std: "docker" "start" "-a" "93fc5f01d343ce94b8c2b3d41944463375cf8679f6207073cfe4ef92ab23361f", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: unreachable expression
[INFO] [stderr]   --> src/bin/disassembler.rs:85:5
[INFO] [stderr]    |
[INFO] [stderr] 25 | /     loop {
[INFO] [stderr] 26 | |         print!("{}: ", vm.get_ip());
[INFO] [stderr] 27 | |         match vm.get_next_operation() {
[INFO] [stderr] 28 | |             Ok(operation) => {
[INFO] [stderr] ...  |
[INFO] [stderr] 82 | |         }
[INFO] [stderr] 83 | |     }
[INFO] [stderr]    | |_____- any code following this expression is unreachable
[INFO] [stderr] 84 | 
[INFO] [stderr] 85 |       Ok(())
[INFO] [stderr]    |       ^^^^^^ unreachable expression
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `synacor_challenge` (bin "disassembler" test) generated 1 warning
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.91s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/synacor_challenge-18aaf4e5515de6a0)
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test vm::tests::state_test ... ok
[INFO] [stdout] test vm::tests::not_test ... ok
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/ackermann-687bcb257518c7e0)
[INFO] [stdout] test vm::tests::jump_test ... ok
[INFO] [stdout] test vm::tests::add_and_output_test ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/disassembler-ea9afbf67d621c92)
[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] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/interactive-fb66f4c3b1984f13)
[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] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/random_walk-047c93fe2c8877a9)
[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] [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] [stderr]    Doc-tests synacor_challenge
[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" "93fc5f01d343ce94b8c2b3d41944463375cf8679f6207073cfe4ef92ab23361f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "93fc5f01d343ce94b8c2b3d41944463375cf8679f6207073cfe4ef92ab23361f", kill_on_drop: false }`
[INFO] [stdout] 93fc5f01d343ce94b8c2b3d41944463375cf8679f6207073cfe4ef92ab23361f