[INFO] cloning repository https://github.com/SarahGreyWolf/JVM-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/SarahGreyWolf/JVM-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSarahGreyWolf%2FJVM-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSarahGreyWolf%2FJVM-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b813112e3246688f5991fc7884e2dda628e3e6d7
[INFO] checking SarahGreyWolf/JVM-rs against try#c8085cfed34c45021fc8f66d073f6394b3e35431 for pr-148939
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSarahGreyWolf%2FJVM-rs" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/SarahGreyWolf/JVM-rs
[INFO] finished tweaking git repo https://github.com/SarahGreyWolf/JVM-rs
[INFO] tweaked toml for git repo https://github.com/SarahGreyWolf/JVM-rs written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/SarahGreyWolf/JVM-rs on toolchain c8085cfed34c45021fc8f66d073f6394b3e35431
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c8085cfed34c45021fc8f66d073f6394b3e35431" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/SarahGreyWolf/JVM-rs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c8085cfed34c45021fc8f66d073f6394b3e35431" "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
[ERROR] error running command: no output for 300 seconds
[INFO] checking SarahGreyWolf/JVM-rs against try#c8085cfed34c45021fc8f66d073f6394b3e35431 for pr-148939
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSarahGreyWolf%2FJVM-rs" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/SarahGreyWolf/JVM-rs
[INFO] finished tweaking git repo https://github.com/SarahGreyWolf/JVM-rs
[INFO] tweaked toml for git repo https://github.com/SarahGreyWolf/JVM-rs written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/SarahGreyWolf/JVM-rs on toolchain c8085cfed34c45021fc8f66d073f6394b3e35431
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c8085cfed34c45021fc8f66d073f6394b3e35431" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/SarahGreyWolf/JVM-rs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c8085cfed34c45021fc8f66d073f6394b3e35431" "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-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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@sha256:94a0c148923f5b2b52a63ef0eeb1882ad339ab61bce784c8077cbe41c61feb6c" "/opt/rustwide/cargo-home/bin/cargo" "+c8085cfed34c45021fc8f66d073f6394b3e35431" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 94d22df8bc236f771f09834718cea20f3d4ab8667620925894247e96f3dad39c
[INFO] running `Command { std: "docker" "start" "-a" "94d22df8bc236f771f09834718cea20f3d4ab8667620925894247e96f3dad39c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "94d22df8bc236f771f09834718cea20f3d4ab8667620925894247e96f3dad39c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "94d22df8bc236f771f09834718cea20f3d4ab8667620925894247e96f3dad39c", kill_on_drop: false }`
[INFO] [stdout] 94d22df8bc236f771f09834718cea20f3d4ab8667620925894247e96f3dad39c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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" "RUSTDOCFLAGS=--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@sha256:94a0c148923f5b2b52a63ef0eeb1882ad339ab61bce784c8077cbe41c61feb6c" "/opt/rustwide/cargo-home/bin/cargo" "+c8085cfed34c45021fc8f66d073f6394b3e35431" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e667c6872a680e7ab75b0460ea688ea1644910907b42ef4bcfed92ed1a3bbf8c
[INFO] running `Command { std: "docker" "start" "-a" "e667c6872a680e7ab75b0460ea688ea1644910907b42ef4bcfed92ed1a3bbf8c", kill_on_drop: false }`
[INFO] [stderr]     Checking jvm_rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0583]: file not found for module `data_types`
[INFO] [stdout]   --> src/main.rs:21:1
[INFO] [stdout]    |
[INFO] [stdout] 21 | mod data_types;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: to create the module `data_types`, create file "src/data_types.rs" or "src/data_types/mod.rs"
[INFO] [stdout]    = note: if there is a `mod data_types` elsewhere in the crate already, import it with `use crate::...` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0583]: file not found for module `data_types`
[INFO] [stdout]   --> src/main.rs:21:1
[INFO] [stdout]    |
[INFO] [stdout] 21 | mod data_types;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: to create the module `data_types`, create file "src/data_types.rs" or "src/data_types/mod.rs"
[INFO] [stdout]    = note: if there is a `mod data_types` elsewhere in the crate already, import it with `use crate::...` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Path` and `fmt`
[INFO] [stdout]  --> src/main.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     fmt,
[INFO] [stdout]   |     ^^^
[INFO] [stdout] ...
[INFO] [stdout] 8 |     path::{Path, PathBuf},
[INFO] [stdout]   |            ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::access_flags::MethodAccessFlags`
[INFO] [stdout]   --> src/main.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use crate::access_flags::MethodAccessFlags;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `core::num`
[INFO] [stdout]  --> src/attributes.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use core::num;
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]     --> src/attributes.rs:1037:13
[INFO] [stdout]      |
[INFO] [stdout] 1037 | /             /**
[INFO] [stdout] 1038 | |              * **start_pc**\
[INFO] [stdout] 1039 | |              *  The value of the start_pc item must be a valid index into the code array
[INFO] [stdout] 1040 | |              *  of this Code attribute. The item indicates the index into the code array at
[INFO] [stdout] 1041 | |              *  which the code for a new line in the original source file begins.
[INFO] [stdout] 1042 | |              */
[INFO] [stdout]      | |_______________^
[INFO] [stdout] 1043 |               start_pc,
[INFO] [stdout]      |               -------- rustdoc does not generate documentation for expression fields
[INFO] [stdout]      |
[INFO] [stdout]      = help: use `/* */` for a plain comment
[INFO] [stdout]      = note: `#[warn(unused_doc_comments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]     --> src/attributes.rs:1044:13
[INFO] [stdout]      |
[INFO] [stdout] 1044 | /             /**
[INFO] [stdout] 1045 | |              * **line_number**\
[INFO] [stdout] 1046 | |              *  The value of the line_number item gives the corresponding line number
[INFO] [stdout] 1047 | |              *  in the original source file.
[INFO] [stdout] 1048 | |              */
[INFO] [stdout]      | |_______________^
[INFO] [stdout] 1049 |               line_number,
[INFO] [stdout]      |               ----------- rustdoc does not generate documentation for expression fields
[INFO] [stdout]      |
[INFO] [stdout]      = help: use `/* */` for a plain comment
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Path` and `fmt`
[INFO] [stdout]  --> src/main.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     fmt,
[INFO] [stdout]   |     ^^^
[INFO] [stdout] ...
[INFO] [stdout] 8 |     path::{Path, PathBuf},
[INFO] [stdout]   |            ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `LoadingCause` and `LoadingError`
[INFO] [stdout]   --> src/class_file.rs:11:21
[INFO] [stdout]    |
[INFO] [stdout] 11 |     class_loading::{LoadingCause, LoadingError},
[INFO] [stdout]    |                     ^^^^^^^^^^^^  ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::access_flags::MethodAccessFlags`
[INFO] [stdout]   --> src/main.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use crate::access_flags::MethodAccessFlags;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `core::num`
[INFO] [stdout]  --> src/attributes.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use core::num;
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]     --> src/attributes.rs:1037:13
[INFO] [stdout]      |
[INFO] [stdout] 1037 | /             /**
[INFO] [stdout] 1038 | |              * **start_pc**\
[INFO] [stdout] 1039 | |              *  The value of the start_pc item must be a valid index into the code array
[INFO] [stdout] 1040 | |              *  of this Code attribute. The item indicates the index into the code array at
[INFO] [stdout] 1041 | |              *  which the code for a new line in the original source file begins.
[INFO] [stdout] 1042 | |              */
[INFO] [stdout]      | |_______________^
[INFO] [stdout] 1043 |               start_pc,
[INFO] [stdout]      |               -------- rustdoc does not generate documentation for expression fields
[INFO] [stdout]      |
[INFO] [stdout]      = help: use `/* */` for a plain comment
[INFO] [stdout]      = note: `#[warn(unused_doc_comments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]     --> src/attributes.rs:1044:13
[INFO] [stdout]      |
[INFO] [stdout] 1044 | /             /**
[INFO] [stdout] 1045 | |              * **line_number**\
[INFO] [stdout] 1046 | |              *  The value of the line_number item gives the corresponding line number
[INFO] [stdout] 1047 | |              *  in the original source file.
[INFO] [stdout] 1048 | |              */
[INFO] [stdout]      | |_______________^
[INFO] [stdout] 1049 |               line_number,
[INFO] [stdout]      |               ----------- rustdoc does not generate documentation for expression fields
[INFO] [stdout]      |
[INFO] [stdout]      = help: use `/* */` for a plain comment
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `LoadingCause` and `LoadingError`
[INFO] [stdout]   --> src/class_file.rs:11:21
[INFO] [stdout]    |
[INFO] [stdout] 11 |     class_loading::{LoadingCause, LoadingError},
[INFO] [stdout]    |                     ^^^^^^^^^^^^  ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0635]: unknown feature `cursor_remaining`
[INFO] [stdout]  --> src/main.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(cursor_remaining)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0635]: unknown feature `cursor_remaining`
[INFO] [stdout]  --> src/main.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(cursor_remaining)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `is_empty` found for struct `std::io::Cursor<T>` in the current scope
[INFO] [stdout]    --> src/class_file.rs:492:20
[INFO] [stdout]     |
[INFO] [stdout] 492 |         if !cursor.is_empty() {
[INFO] [stdout]     |                    ^^^^^^^^ method not found in `std::io::Cursor<&[u8]>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `is_empty` found for struct `std::io::Cursor<T>` in the current scope
[INFO] [stdout]    --> src/class_file.rs:492:20
[INFO] [stdout]     |
[INFO] [stdout] 492 |         if !cursor.is_empty() {
[INFO] [stdout]     |                    ^^^^^^^^ method not found in `std::io::Cursor<&[u8]>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `offset_delta` is assigned to, but never used
[INFO] [stdout]    --> src/attributes.rs:550:21
[INFO] [stdout]     |
[INFO] [stdout] 550 |                 let mut offset_delta: u16 = 0;
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: consider using `_offset_delta` instead
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `offset_delta` is never read
[INFO] [stdout]    --> src/attributes.rs:555:29
[INFO] [stdout]     |
[INFO] [stdout] 555 | ...                   offset_delta = _type as u16;
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `offset_delta` is never read
[INFO] [stdout]    --> src/attributes.rs:559:29
[INFO] [stdout]     |
[INFO] [stdout] 559 | ...                   offset_delta = _type as u16 - 64;
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `class`
[INFO] [stdout]    --> src/attributes.rs:715:48
[INFO] [stdout]     |
[INFO] [stdout] 715 |                     if let ConstantPool::Class(class) = &constant_pool[index as usize] {
[INFO] [stdout]     |                                                ^^^^^ help: if this is intentional, prefix it with an underscore: `_class`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `offset_delta` is assigned to, but never used
[INFO] [stdout]    --> src/attributes.rs:550:21
[INFO] [stdout]     |
[INFO] [stdout] 550 |                 let mut offset_delta: u16 = 0;
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: consider using `_offset_delta` instead
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `offset_delta` is never read
[INFO] [stdout]    --> src/attributes.rs:555:29
[INFO] [stdout]     |
[INFO] [stdout] 555 | ...                   offset_delta = _type as u16;
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `offset_delta` is never read
[INFO] [stdout]    --> src/attributes.rs:559:29
[INFO] [stdout]     |
[INFO] [stdout] 559 | ...                   offset_delta = _type as u16 - 64;
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `class`
[INFO] [stdout]    --> src/attributes.rs:715:48
[INFO] [stdout]     |
[INFO] [stdout] 715 |                     if let ConstantPool::Class(class) = &constant_pool[index as usize] {
[INFO] [stdout]     |                                                ^^^^^ help: if this is intentional, prefix it with an underscore: `_class`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0583, E0599, E0635.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0583`.
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0583, E0599, E0635.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0583`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `jvm_rs` (bin "jvm_rs" test) due to 3 previous errors; 10 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `jvm_rs` (bin "jvm_rs") due to 3 previous errors; 10 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "e667c6872a680e7ab75b0460ea688ea1644910907b42ef4bcfed92ed1a3bbf8c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e667c6872a680e7ab75b0460ea688ea1644910907b42ef4bcfed92ed1a3bbf8c", kill_on_drop: false }`
[INFO] [stdout] e667c6872a680e7ab75b0460ea688ea1644910907b42ef4bcfed92ed1a3bbf8c
