[INFO] updating cached repository melvinw/rust-bpf
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/melvinw/rust-bpf
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/melvinw/rust-bpf" "work/ex/pr-60039-1/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/gh/melvinw/rust-bpf"`
[INFO] [stderr] Cloning into 'work/ex/pr-60039-1/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/gh/melvinw/rust-bpf'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/melvinw/rust-bpf" "work/ex/pr-60039-1/sources/try#99a7498759a22b5684caf798a98b7e90ad9d2443/gh/melvinw/rust-bpf"`
[INFO] [stderr] Cloning into 'work/ex/pr-60039-1/sources/try#99a7498759a22b5684caf798a98b7e90ad9d2443/gh/melvinw/rust-bpf'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 673b26301563759f232e9665febd00ee3db75089
[INFO] sha for GitHub repo melvinw/rust-bpf: 673b26301563759f232e9665febd00ee3db75089
[INFO] validating manifest of melvinw/rust-bpf on toolchain master#e305df1846a6d985315917ae0c81b74af8b4e641
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e305df1846a6d985315917ae0c81b74af8b4e641-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of melvinw/rust-bpf on toolchain try#99a7498759a22b5684caf798a98b7e90ad9d2443
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+99a7498759a22b5684caf798a98b7e90ad9d2443-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing melvinw/rust-bpf
[INFO] finished frobbing melvinw/rust-bpf
[INFO] frobbed toml for melvinw/rust-bpf written to work/ex/pr-60039-1/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/gh/melvinw/rust-bpf/Cargo.toml
[INFO] started frobbing melvinw/rust-bpf
[INFO] finished frobbing melvinw/rust-bpf
[INFO] frobbed toml for melvinw/rust-bpf written to work/ex/pr-60039-1/sources/try#99a7498759a22b5684caf798a98b7e90ad9d2443/gh/melvinw/rust-bpf/Cargo.toml
[INFO] crate melvinw/rust-bpf already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e305df1846a6d985315917ae0c81b74af8b4e641-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+99a7498759a22b5684caf798a98b7e90ad9d2443-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking melvinw/rust-bpf against master#e305df1846a6d985315917ae0c81b74af8b4e641 for pr-60039-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-60039-1/worker-1/master#e305df1846a6d985315917ae0c81b74af8b4e641:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-60039-1/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/gh/melvinw/rust-bpf:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+e305df1846a6d985315917ae0c81b74af8b4e641-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 4f5329cdf8b1b7e1346c342546ef9b2a83af584fa2172f1fb06cbbef70f8a7a2
[INFO] running `"docker" "start" "-a" "4f5329cdf8b1b7e1346c342546ef9b2a83af584fa2172f1fb06cbbef70f8a7a2"`
[INFO] [stderr]     Checking memchr v1.0.2
[INFO] [stderr]     Checking aho-corasick v0.6.3
[INFO] [stderr]     Checking regex v0.2.2
[INFO] [stderr]     Checking rust_bpf v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `NativeEndian`
[INFO] [stderr]  --> src/vm/machine.rs:8:34
[INFO] [stderr]   |
[INFO] [stderr] 8 | use self::byteorder::{BigEndian, NativeEndian, ReadBytesExt};
[INFO] [stderr]   |                                  ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `NativeEndian`
[INFO] [stderr]  --> src/vm/machine.rs:8:34
[INFO] [stderr]   |
[INFO] [stderr] 8 | use self::byteorder::{BigEndian, NativeEndian, ReadBytesExt};
[INFO] [stderr]   |                                  ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `instructions`
[INFO] [stderr]    --> src/assembler/main.rs:146:11
[INFO] [stderr]     |
[INFO] [stderr] 146 |   let mut instructions: Vec<Instruction> = Vec::new();
[INFO] [stderr]     |           ^^^^^^^^^^^^ help: consider prefixing with an underscore: `_instructions`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `op`
[INFO] [stderr]    --> src/assembler/main.rs:158:9
[INFO] [stderr]     |
[INFO] [stderr] 158 |     let op = instr.op.unwrap();
[INFO] [stderr]     |         ^^ help: consider prefixing with an underscore: `_op`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/assembler/main.rs:146:7
[INFO] [stderr]     |
[INFO] [stderr] 146 |   let mut instructions: Vec<Instruction> = Vec::new();
[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: variant is never constructed: `PacketNibble`
[INFO] [stderr]   --> src/assembler/main.rs:85:3
[INFO] [stderr]    |
[INFO] [stderr] 85 |   PacketNibble(u32),
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `JumpLabel`
[INFO] [stderr]   --> src/assembler/main.rs:86:3
[INFO] [stderr]    |
[INFO] [stderr] 86 |   JumpLabel(&'a str),
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `TwoBranch`
[INFO] [stderr]   --> src/assembler/main.rs:87:3
[INFO] [stderr]    |
[INFO] [stderr] 87 |   TwoBranch(&'a str, &'a str),
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `OneBranch`
[INFO] [stderr]   --> src/assembler/main.rs:88:3
[INFO] [stderr]    |
[INFO] [stderr] 88 |   OneBranch(&'a str),
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `instructions`
[INFO] [stderr]    --> src/assembler/main.rs:146:11
[INFO] [stderr]     |
[INFO] [stderr] 146 |   let mut instructions: Vec<Instruction> = Vec::new();
[INFO] [stderr]     |           ^^^^^^^^^^^^ help: consider prefixing with an underscore: `_instructions`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `op`
[INFO] [stderr]    --> src/assembler/main.rs:158:9
[INFO] [stderr]     |
[INFO] [stderr] 158 |     let op = instr.op.unwrap();
[INFO] [stderr]     |         ^^ help: consider prefixing with an underscore: `_op`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/assembler/main.rs:146:7
[INFO] [stderr]     |
[INFO] [stderr] 146 |   let mut instructions: Vec<Instruction> = Vec::new();
[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: variant is never constructed: `PacketNibble`
[INFO] [stderr]   --> src/assembler/main.rs:85:3
[INFO] [stderr]    |
[INFO] [stderr] 85 |   PacketNibble(u32),
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `JumpLabel`
[INFO] [stderr]   --> src/assembler/main.rs:86:3
[INFO] [stderr]    |
[INFO] [stderr] 86 |   JumpLabel(&'a str),
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `TwoBranch`
[INFO] [stderr]   --> src/assembler/main.rs:87:3
[INFO] [stderr]    |
[INFO] [stderr] 87 |   TwoBranch(&'a str, &'a str),
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `OneBranch`
[INFO] [stderr]   --> src/assembler/main.rs:88:3
[INFO] [stderr]    |
[INFO] [stderr] 88 |   OneBranch(&'a str),
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.32s
[INFO] running `"docker" "inspect" "4f5329cdf8b1b7e1346c342546ef9b2a83af584fa2172f1fb06cbbef70f8a7a2"`
[INFO] running `"docker" "rm" "-f" "4f5329cdf8b1b7e1346c342546ef9b2a83af584fa2172f1fb06cbbef70f8a7a2"`
[INFO] [stdout] 4f5329cdf8b1b7e1346c342546ef9b2a83af584fa2172f1fb06cbbef70f8a7a2