[INFO] updating cached repository https://github.com/MatevzFa/class2json
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] d117af2ea0837f499261d72093dfc4bdcfdd4bfd
[INFO] checking MatevzFa/class2json against master#bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc for pr-70917
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMatevzFa%2Fclass2json" "/workspace/builds/worker-4/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/MatevzFa/class2json on toolchain bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc
[INFO] running `"/workspace/cargo-home/bin/cargo" "+bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/MatevzFa/class2json
[INFO] finished tweaking git repo https://github.com/MatevzFa/class2json
[INFO] tweaked toml for git repo https://github.com/MatevzFa/class2json written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/MatevzFa/class2json already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 5245f3fc13c2606409217b9370ed43d849c2bf6b8d8514594566e4c3984f6f19
[INFO] running `"docker" "start" "-a" "5245f3fc13c2606409217b9370ed43d849c2bf6b8d8514594566e4c3984f6f19"`
[INFO] [stderr]    Compiling serde v1.0.89
[INFO] [stderr]     Checking atty v0.2.10
[INFO] [stderr]    Compiling syn v0.15.27
[INFO] [stderr]     Checking clap v2.31.2
[INFO] [stderr]    Compiling serde_derive v1.0.89
[INFO] [stderr]     Checking erased-serde v0.3.9
[INFO] [stderr]     Checking serde_json v1.0.39
[INFO] [stderr]     Checking class2json v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/read_util.rs:4:24
[INFO] [stderr]   |
[INFO] [stderr] 4 | pub fn read_u8(f: &mut Read) -> u8 {
[INFO] [stderr]   |                        ^^^^ help: use `dyn`: `dyn Read`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/read_util.rs:11:25
[INFO] [stderr]    |
[INFO] [stderr] 11 | pub fn read_u16(f: &mut Read) -> u16 {
[INFO] [stderr]    |                         ^^^^ help: use `dyn`: `dyn Read`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/read_util.rs:18:25
[INFO] [stderr]    |
[INFO] [stderr] 18 | pub fn read_u32(f: &mut Read) -> u32 {
[INFO] [stderr]    |                         ^^^^ help: use `dyn`: `dyn Read`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/read_util.rs:25:28
[INFO] [stderr]    |
[INFO] [stderr] 25 | pub fn read_vec_u8(f: &mut Read, length: usize) -> Vec<u8> {
[INFO] [stderr]    |                            ^^^^ help: use `dyn`: `dyn Read`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/read_util.rs:32:29
[INFO] [stderr]    |
[INFO] [stderr] 32 | pub fn read_vec_u16(f: &mut Read, length: usize) -> Vec<u16> {
[INFO] [stderr]    |                             ^^^^ help: use `dyn`: `dyn Read`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/class_file/constant_pool.rs:15:24
[INFO] [stderr]    |
[INFO] [stderr] 15 |     pub array: Vec<Box<CpInfo>>,
[INFO] [stderr]    |                        ^^^^^^ help: use `dyn`: `dyn CpInfo`
[INFO] [stderr] 
[INFO] [stderr] warning: unused macro definition
[INFO] [stderr]  --> src/bytecode/mod.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | / macro_rules! instruction {
[INFO] [stderr] 2 | |     ($instr:expr, [$(eval $a:expr),*]) => {{
[INFO] [stderr] 3 | |         let mut vector: Vec<i32> = Vec::new();
[INFO] [stderr] 4 | |         $(vector.push($x as u8);)*
[INFO] [stderr] 5 | |         (instr, vector.sum(), vector)
[INFO] [stderr] 6 | |     }};
[INFO] [stderr] 7 | | }
[INFO] [stderr]   | |_^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_macros)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:40:27
[INFO] [stderr]    |
[INFO] [stderr] 40 | fn read_classfile(f: &mut Read) -> ClassFile {
[INFO] [stderr]    |                           ^^^^ help: use `dyn`: `dyn Read`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:65:31
[INFO] [stderr]    |
[INFO] [stderr] 65 | fn read_constant_pool(f: &mut Read, constant_pool_count: u16) -> ConstantPool {
[INFO] [stderr]    |                               ^^^^ help: use `dyn`: `dyn Read`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:66:36
[INFO] [stderr]    |
[INFO] [stderr] 66 |     let mut constant_pool: Vec<Box<CpInfo>> = Vec::new();
[INFO] [stderr]    |                                    ^^^^^^ help: use `dyn`: `dyn CpInfo`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:73:26
[INFO] [stderr]    |
[INFO] [stderr] 73 |         let cp_info: Box<CpInfo> = match tag {
[INFO] [stderr]    |                          ^^^^^^ help: use `dyn`: `dyn CpInfo`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/main.rs:183:24
[INFO] [stderr]     |
[INFO] [stderr] 183 | fn read_fields(f: &mut Read, fields_count: u16) -> Fields {
[INFO] [stderr]     |                        ^^^^ help: use `dyn`: `dyn Read`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/main.rs:204:25
[INFO] [stderr]     |
[INFO] [stderr] 204 | fn read_methods(f: &mut Read, methods_count: u16) -> Methods {
[INFO] [stderr]     |                         ^^^^ help: use `dyn`: `dyn Read`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/main.rs:225:28
[INFO] [stderr]     |
[INFO] [stderr] 225 | fn read_attributes(f: &mut Read, attributes_count: u16) -> Attributes {
[INFO] [stderr]     |                            ^^^^ help: use `dyn`: `dyn Read`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/read_util.rs:4:24
[INFO] [stderr]   |
[INFO] [stderr] 4 | pub fn read_u8(f: &mut Read) -> u8 {
[INFO] [stderr]   |                        ^^^^ help: use `dyn`: `dyn Read`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/read_util.rs:11:25
[INFO] [stderr]    |
[INFO] [stderr] 11 | pub fn read_u16(f: &mut Read) -> u16 {
[INFO] [stderr]    |                         ^^^^ help: use `dyn`: `dyn Read`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/read_util.rs:18:25
[INFO] [stderr]    |
[INFO] [stderr] 18 | pub fn read_u32(f: &mut Read) -> u32 {
[INFO] [stderr]    |                         ^^^^ help: use `dyn`: `dyn Read`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/read_util.rs:25:28
[INFO] [stderr]    |
[INFO] [stderr] 25 | pub fn read_vec_u8(f: &mut Read, length: usize) -> Vec<u8> {
[INFO] [stderr]    |                            ^^^^ help: use `dyn`: `dyn Read`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/read_util.rs:32:29
[INFO] [stderr]    |
[INFO] [stderr] 32 | pub fn read_vec_u16(f: &mut Read, length: usize) -> Vec<u16> {
[INFO] [stderr]    |                             ^^^^ help: use `dyn`: `dyn Read`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/class_file/constant_pool.rs:15:24
[INFO] [stderr]    |
[INFO] [stderr] 15 |     pub array: Vec<Box<CpInfo>>,
[INFO] [stderr]    |                        ^^^^^^ help: use `dyn`: `dyn CpInfo`
[INFO] [stderr] 
[INFO] [stderr] warning: unused macro definition
[INFO] [stderr]  --> src/bytecode/mod.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | / macro_rules! instruction {
[INFO] [stderr] 2 | |     ($instr:expr, [$(eval $a:expr),*]) => {{
[INFO] [stderr] 3 | |         let mut vector: Vec<i32> = Vec::new();
[INFO] [stderr] 4 | |         $(vector.push($x as u8);)*
[INFO] [stderr] 5 | |         (instr, vector.sum(), vector)
[INFO] [stderr] 6 | |     }};
[INFO] [stderr] 7 | | }
[INFO] [stderr]   | |_^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_macros)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:40:27
[INFO] [stderr]    |
[INFO] [stderr] 40 | fn read_classfile(f: &mut Read) -> ClassFile {
[INFO] [stderr]    |                           ^^^^ help: use `dyn`: `dyn Read`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:65:31
[INFO] [stderr]    |
[INFO] [stderr] 65 | fn read_constant_pool(f: &mut Read, constant_pool_count: u16) -> ConstantPool {
[INFO] [stderr]    |                               ^^^^ help: use `dyn`: `dyn Read`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:66:36
[INFO] [stderr]    |
[INFO] [stderr] 66 |     let mut constant_pool: Vec<Box<CpInfo>> = Vec::new();
[INFO] [stderr]    |                                    ^^^^^^ help: use `dyn`: `dyn CpInfo`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:73:26
[INFO] [stderr]    |
[INFO] [stderr] 73 |         let cp_info: Box<CpInfo> = match tag {
[INFO] [stderr]    |                          ^^^^^^ help: use `dyn`: `dyn CpInfo`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/main.rs:183:24
[INFO] [stderr]     |
[INFO] [stderr] 183 | fn read_fields(f: &mut Read, fields_count: u16) -> Fields {
[INFO] [stderr]     |                        ^^^^ help: use `dyn`: `dyn Read`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/main.rs:204:25
[INFO] [stderr]     |
[INFO] [stderr] 204 | fn read_methods(f: &mut Read, methods_count: u16) -> Methods {
[INFO] [stderr]     |                         ^^^^ help: use `dyn`: `dyn Read`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/main.rs:225:28
[INFO] [stderr]     |
[INFO] [stderr] 225 | fn read_attributes(f: &mut Read, attributes_count: u16) -> Attributes {
[INFO] [stderr]     |                            ^^^^ help: use `dyn`: `dyn Read`
[INFO] [stderr] 
[INFO] [stderr] error[E0277]: no implementation for `u8 | std::option::Option<&u8>`
[INFO] [stderr]   --> src/serialization.rs:32:61
[INFO] [stderr]    |
[INFO] [stderr] 32 |                     2 => bytecode_iter.next().unwrap() << 8 | bytecode_iter.next(),
[INFO] [stderr]    |                                                             ^ no implementation for `u8 | std::option::Option<&u8>`
[INFO] [stderr]    |
[INFO] [stderr]    = help: the trait `std::ops::BitOr<std::option::Option<&u8>>` is not implemented for `u8`
[INFO] [stderr] 
[INFO] [stderr] error[E0369]: no implementation for `std::option::Option<&u8> << {integer}`
[INFO] [stderr]   --> src/serialization.rs:33:85
[INFO] [stderr]    |
[INFO] [stderr] 33 |                     4 => bytecode_iter.next().unwrap() << 24 | bytecode_iter.next() << 16 | bytecode_iter.next() << 8 | bytecode_iter.next().unwrap(),
[INFO] [stderr]    |                                                                -------------------- ^^ -- {integer}
[INFO] [stderr]    |                                                                |
[INFO] [stderr]    |                                                                std::option::Option<&u8>
[INFO] [stderr] 
[INFO] [stderr] error[E0369]: no implementation for `std::option::Option<&u8> << {integer}`
[INFO] [stderr]   --> src/serialization.rs:33:114
[INFO] [stderr]    |
[INFO] [stderr] 33 |                     4 => bytecode_iter.next().unwrap() << 24 | bytecode_iter.next() << 16 | bytecode_iter.next() << 8 | bytecode_iter.next().unwrap(),
[INFO] [stderr]    |                                                                                             -------------------- ^^ - {integer}
[INFO] [stderr]    |                                                                                             |
[INFO] [stderr]    |                                                                                             std::option::Option<&u8>
[INFO] [stderr] 
[INFO] [stderr] error[E0308]: `match` arms have incompatible types
[INFO] [stderr]   --> src/serialization.rs:33:26
[INFO] [stderr]    |
[INFO] [stderr] 30 |                   let arg = match arg_len {
[INFO] [stderr]    |  ___________________________-
[INFO] [stderr] 31 | |                     1 => bytecode_iter.next().unwrap(),
[INFO] [stderr]    | |                          ----------------------------- this is found to be of type `&u8`
[INFO] [stderr] 32 | |                     2 => bytecode_iter.next().unwrap() << 8 | bytecode_iter.next(),
[INFO] [stderr]    | |                          --------------------------------------------------------- this is found to be of type `&u8`
[INFO] [stderr] 33 | |                     4 => bytecode_iter.next().unwrap() << 24 | bytecode_iter.next() << 16 | bytecode_iter.next() << 8 | bytecode_iter.next().unwrap(),
[INFO] [stderr]    | |                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected `&u8`, found `u8`
[INFO] [stderr] 34 | |                 };
[INFO] [stderr]    | |_________________- `match` arms have incompatible types
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 4 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0277, E0308, E0369.
[INFO] [stderr] For more information about an error, try `rustc --explain E0277`.
[INFO] [stderr] error: could not compile `class2json`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error[E0277]: no implementation for `u8 | std::option::Option<&u8>`
[INFO] [stderr]   --> src/serialization.rs:32:61
[INFO] [stderr]    |
[INFO] [stderr] 32 |                     2 => bytecode_iter.next().unwrap() << 8 | bytecode_iter.next(),
[INFO] [stderr]    |                                                             ^ no implementation for `u8 | std::option::Option<&u8>`
[INFO] [stderr]    |
[INFO] [stderr]    = help: the trait `std::ops::BitOr<std::option::Option<&u8>>` is not implemented for `u8`
[INFO] [stderr] 
[INFO] [stderr] error[E0369]: no implementation for `std::option::Option<&u8> << {integer}`
[INFO] [stderr]   --> src/serialization.rs:33:85
[INFO] [stderr]    |
[INFO] [stderr] 33 |                     4 => bytecode_iter.next().unwrap() << 24 | bytecode_iter.next() << 16 | bytecode_iter.next() << 8 | bytecode_iter.next().unwrap(),
[INFO] [stderr]    |                                                                -------------------- ^^ -- {integer}
[INFO] [stderr]    |                                                                |
[INFO] [stderr]    |                                                                std::option::Option<&u8>
[INFO] [stderr] 
[INFO] [stderr] error[E0369]: no implementation for `std::option::Option<&u8> << {integer}`
[INFO] [stderr]   --> src/serialization.rs:33:114
[INFO] [stderr]    |
[INFO] [stderr] 33 |                     4 => bytecode_iter.next().unwrap() << 24 | bytecode_iter.next() << 16 | bytecode_iter.next() << 8 | bytecode_iter.next().unwrap(),
[INFO] [stderr]    |                                                                                             -------------------- ^^ - {integer}
[INFO] [stderr]    |                                                                                             |
[INFO] [stderr]    |                                                                                             std::option::Option<&u8>
[INFO] [stderr] 
[INFO] [stderr] error[E0308]: `match` arms have incompatible types
[INFO] [stderr]   --> src/serialization.rs:33:26
[INFO] [stderr]    |
[INFO] [stderr] 30 |                   let arg = match arg_len {
[INFO] [stderr]    |  ___________________________-
[INFO] [stderr] 31 | |                     1 => bytecode_iter.next().unwrap(),
[INFO] [stderr]    | |                          ----------------------------- this is found to be of type `&u8`
[INFO] [stderr] 32 | |                     2 => bytecode_iter.next().unwrap() << 8 | bytecode_iter.next(),
[INFO] [stderr]    | |                          --------------------------------------------------------- this is found to be of type `&u8`
[INFO] [stderr] 33 | |                     4 => bytecode_iter.next().unwrap() << 24 | bytecode_iter.next() << 16 | bytecode_iter.next() << 8 | bytecode_iter.next().unwrap(),
[INFO] [stderr]    | |                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected `&u8`, found `u8`
[INFO] [stderr] 34 | |                 };
[INFO] [stderr]    | |_________________- `match` arms have incompatible types
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 4 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0277, E0308, E0369.
[INFO] [stderr] For more information about an error, try `rustc --explain E0277`.
[INFO] [stderr] error: could not compile `class2json`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "5245f3fc13c2606409217b9370ed43d849c2bf6b8d8514594566e4c3984f6f19"`
[INFO] running `"docker" "rm" "-f" "5245f3fc13c2606409217b9370ed43d849c2bf6b8d8514594566e4c3984f6f19"`
[INFO] [stdout] 5245f3fc13c2606409217b9370ed43d849c2bf6b8d8514594566e4c3984f6f19
