[INFO] fetching crate jBrain 0.1.2...
[INFO] testing jBrain-0.1.2 against 1.55.0 for beta-1.56-2
[INFO] extracting crate jBrain 0.1.2 into /workspace/builds/worker-33/source
[INFO] validating manifest of crates.io crate jBrain 0.1.2 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate jBrain 0.1.2
[INFO] finished tweaking crates.io crate jBrain 0.1.2
[INFO] tweaked toml for crates.io crate jBrain 0.1.2 written to /workspace/builds/worker-33/source/Cargo.toml
[INFO] crate crates.io crate jBrain 0.1.2 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "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-33/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-33/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d419882295ad87c6a82deca733c3ea63ae246c0fe3d89fe9befa78dbbf0b8d41
[INFO] running `Command { std: "docker" "start" "-a" "d419882295ad87c6a82deca733c3ea63ae246c0fe3d89fe9befa78dbbf0b8d41", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d419882295ad87c6a82deca733c3ea63ae246c0fe3d89fe9befa78dbbf0b8d41", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d419882295ad87c6a82deca733c3ea63ae246c0fe3d89fe9befa78dbbf0b8d41", kill_on_drop: false }`
[INFO] [stdout] d419882295ad87c6a82deca733c3ea63ae246c0fe3d89fe9befa78dbbf0b8d41
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-33/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-33/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 20939adb2e104e755bf045094b42b28683bfc3eaf9de184e2a71648dff2998ce
[INFO] running `Command { std: "docker" "start" "-a" "20939adb2e104e755bf045094b42b28683bfc3eaf9de184e2a71648dff2998ce", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.76
[INFO] [stderr]    Compiling syn v1.0.39
[INFO] [stderr]    Compiling getrandom v0.1.15
[INFO] [stderr]    Compiling adler v0.2.3
[INFO] [stderr]    Compiling gimli v0.22.0
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]    Compiling object v0.20.0
[INFO] [stderr]    Compiling rustc-demangle v0.1.16
[INFO] [stderr]    Compiling unicode-segmentation v1.6.0
[INFO] [stderr]    Compiling ppv-lite86 v0.2.9
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling num-integer v0.1.43
[INFO] [stderr]    Compiling num-bigint v0.3.0
[INFO] [stderr]    Compiling num-iter v0.1.41
[INFO] [stderr]    Compiling num-rational v0.3.0
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling miniz_oxide v0.4.1
[INFO] [stderr]    Compiling heck v0.3.1
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling clap v2.33.3
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling num-traits v0.1.43
[INFO] [stderr]    Compiling num-complex v0.3.0
[INFO] [stderr]    Compiling enum_primitive v0.1.1
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling addr2line v0.13.0
[INFO] [stderr]    Compiling backtrace v0.3.50
[INFO] [stderr]    Compiling num v0.3.0
[INFO] [stderr]    Compiling synstructure v0.12.4
[INFO] [stderr]    Compiling structopt-derive v0.4.10
[INFO] [stderr]    Compiling failure v0.1.8
[INFO] [stderr]    Compiling exitfailure v0.5.1
[INFO] [stderr]    Compiling structopt v0.3.17
[INFO] [stderr]    Compiling jBrain v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: type `jBrainVM` should have an upper camel case name
[INFO] [stdout]   --> src/vm.rs:78:12
[INFO] [stdout]    |
[INFO] [stdout] 78 | pub struct jBrainVM {
[INFO] [stdout]    |            ^^^^^^^^ help: convert the identifier to upper camel case: `JBrainVm`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]    --> src/vm.rs:475:5
[INFO] [stdout]     |
[INFO] [stdout] 474 |                 panic!("Failed to pop, ERROR 0x0003");
[INFO] [stdout]     |                 -------------------------------------- any code following this expression is unreachable
[INFO] [stdout] 475 |                 0
[INFO] [stdout]     |                 ^ unreachable expression
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `blockno`
[INFO] [stdout]    --> src/vm.rs:386:12
[INFO] [stdout]     |
[INFO] [stdout] 386 | ...                   let blockno = self.block;
[INFO] [stdout]     |                           ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_blockno`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]    --> src/vm.rs:489:21
[INFO] [stdout]     |
[INFO] [stdout] 489 |     fn pass(&mut self, value: u8) {
[INFO] [stdout]     |                        ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: crate `jBrain` should have a snake case name
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout]   = help: convert the identifier to snake case: `j_brain`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `jBrain` should have a snake case name
[INFO] [stdout]   --> src/main.rs:19:10
[INFO] [stdout]    |
[INFO] [stdout] 19 |     let mut jBrain = vm::jBrainVM::new();
[INFO] [stdout]    |             ^^^^^^ help: convert the identifier to snake case: `j_brain`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `jBrain_version` should have a snake case name
[INFO] [stdout]   --> src/vm.rs:64:8
[INFO] [stdout]    |
[INFO] [stdout] 64 | pub fn jBrain_version() -> String {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^ help: convert the identifier to snake case: `j_brain_version`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `jBrain_license` should have a snake case name
[INFO] [stdout]   --> src/vm.rs:68:8
[INFO] [stdout]    |
[INFO] [stdout] 68 | pub fn jBrain_license() -> String {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^ help: convert the identifier to snake case: `j_brain_license`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 17.51s
[INFO] running `Command { std: "docker" "inspect" "20939adb2e104e755bf045094b42b28683bfc3eaf9de184e2a71648dff2998ce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "20939adb2e104e755bf045094b42b28683bfc3eaf9de184e2a71648dff2998ce", kill_on_drop: false }`
[INFO] [stdout] 20939adb2e104e755bf045094b42b28683bfc3eaf9de184e2a71648dff2998ce
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-33/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-33/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6faaaa4b4d19806a62068b985633ac8e8a2cc095e42606c7f42fd6ec2178ea05
[INFO] running `Command { std: "docker" "start" "-a" "6faaaa4b4d19806a62068b985633ac8e8a2cc095e42606c7f42fd6ec2178ea05", kill_on_drop: false }`
[INFO] [stderr]    Compiling jBrain v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: type `jBrainVM` should have an upper camel case name
[INFO] [stdout]   --> src/vm.rs:78:12
[INFO] [stdout]    |
[INFO] [stdout] 78 | pub struct jBrainVM {
[INFO] [stdout]    |            ^^^^^^^^ help: convert the identifier to upper camel case: `JBrainVm`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]    --> src/vm.rs:475:5
[INFO] [stdout]     |
[INFO] [stdout] 474 |                 panic!("Failed to pop, ERROR 0x0003");
[INFO] [stdout]     |                 -------------------------------------- any code following this expression is unreachable
[INFO] [stdout] 475 |                 0
[INFO] [stdout]     |                 ^ unreachable expression
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `blockno`
[INFO] [stdout]    --> src/vm.rs:386:12
[INFO] [stdout]     |
[INFO] [stdout] 386 | ...                   let blockno = self.block;
[INFO] [stdout]     |                           ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_blockno`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]    --> src/vm.rs:489:21
[INFO] [stdout]     |
[INFO] [stdout] 489 |     fn pass(&mut self, value: u8) {
[INFO] [stdout]     |                        ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: crate `jBrain` should have a snake case name
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout]   = help: convert the identifier to snake case: `j_brain`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `jBrain` should have a snake case name
[INFO] [stdout]   --> src/main.rs:19:10
[INFO] [stdout]    |
[INFO] [stdout] 19 |     let mut jBrain = vm::jBrainVM::new();
[INFO] [stdout]    |             ^^^^^^ help: convert the identifier to snake case: `j_brain`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `jBrain_version` should have a snake case name
[INFO] [stdout]   --> src/vm.rs:64:8
[INFO] [stdout]    |
[INFO] [stdout] 64 | pub fn jBrain_version() -> String {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^ help: convert the identifier to snake case: `j_brain_version`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `jBrain_license` should have a snake case name
[INFO] [stdout]   --> src/vm.rs:68:8
[INFO] [stdout]    |
[INFO] [stdout] 68 | pub fn jBrain_license() -> String {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^ help: convert the identifier to snake case: `j_brain_license`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.16s
[INFO] running `Command { std: "docker" "inspect" "6faaaa4b4d19806a62068b985633ac8e8a2cc095e42606c7f42fd6ec2178ea05", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6faaaa4b4d19806a62068b985633ac8e8a2cc095e42606c7f42fd6ec2178ea05", kill_on_drop: false }`
[INFO] [stdout] 6faaaa4b4d19806a62068b985633ac8e8a2cc095e42606c7f42fd6ec2178ea05
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-33/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-33/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 2f5e9c71f34026888932825c016998be8f36c277e421dd2d85e808987083679d
[INFO] running `Command { std: "docker" "start" "-a" "2f5e9c71f34026888932825c016998be8f36c277e421dd2d85e808987083679d", kill_on_drop: false }`
[INFO] [stderr] warning: type `jBrainVM` should have an upper camel case name
[INFO] [stderr]   --> src/vm.rs:78:12
[INFO] [stderr]    |
[INFO] [stderr] 78 | pub struct jBrainVM {
[INFO] [stderr]    |            ^^^^^^^^ help: convert the identifier to upper camel case: `JBrainVm`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable expression
[INFO] [stderr]    --> src/vm.rs:475:5
[INFO] [stderr]     |
[INFO] [stderr] 474 |                 panic!("Failed to pop, ERROR 0x0003");
[INFO] [stderr]     |                 -------------------------------------- any code following this expression is unreachable
[INFO] [stderr] 475 |                 0
[INFO] [stderr]     |                 ^ unreachable expression
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `blockno`
[INFO] [stderr]    --> src/vm.rs:386:12
[INFO] [stderr]     |
[INFO] [stderr] 386 | ...                   let blockno = self.block;
[INFO] [stderr]     |                           ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_blockno`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `value`
[INFO] [stderr]    --> src/vm.rs:489:21
[INFO] [stderr]     |
[INFO] [stderr] 489 |     fn pass(&mut self, value: u8) {
[INFO] [stderr]     |                        ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stderr] 
[INFO] [stderr] warning: crate `jBrain` should have a snake case name
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr]   = help: convert the identifier to snake case: `j_brain`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `jBrain` should have a snake case name
[INFO] [stderr]   --> src/main.rs:19:10
[INFO] [stderr]    |
[INFO] [stderr] 19 |     let mut jBrain = vm::jBrainVM::new();
[INFO] [stderr]    |             ^^^^^^ help: convert the identifier to snake case: `j_brain`
[INFO] [stderr] 
[INFO] [stderr] warning: function `jBrain_version` should have a snake case name
[INFO] [stderr]   --> src/vm.rs:64:8
[INFO] [stderr]    |
[INFO] [stderr] 64 | pub fn jBrain_version() -> String {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^ help: convert the identifier to snake case: `j_brain_version`
[INFO] [stderr] 
[INFO] [stderr] warning: function `jBrain_license` should have a snake case name
[INFO] [stderr]   --> src/vm.rs:68:8
[INFO] [stderr]    |
[INFO] [stderr] 68 | pub fn jBrain_license() -> String {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^ help: convert the identifier to snake case: `j_brain_license`
[INFO] [stderr] 
[INFO] [stderr] warning: `jBrain` (bin "jBrain" test) generated 8 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.13s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/jBrain-545502f850dbacad)
[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" "2f5e9c71f34026888932825c016998be8f36c277e421dd2d85e808987083679d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2f5e9c71f34026888932825c016998be8f36c277e421dd2d85e808987083679d", kill_on_drop: false }`
[INFO] [stdout] 2f5e9c71f34026888932825c016998be8f36c277e421dd2d85e808987083679d