[INFO] cloning repository https://github.com/alaidine/rcc
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/alaidine/rcc" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Falaidine%2Frcc", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Falaidine%2Frcc'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c036fbecd58bcbe66cbc78f220722fcd15219d19
[INFO] checking alaidine/rcc against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Falaidine%2Frcc" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/alaidine/rcc
[INFO] finished tweaking git repo https://github.com/alaidine/rcc
[INFO] tweaked toml for git repo https://github.com/alaidine/rcc written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/alaidine/rcc on toolchain 4f260f0f20b3133d20cfb50353c0221943af5796
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/alaidine/rcc 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" "+4f260f0f20b3133d20cfb50353c0221943af5796" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2f61512576bc8192db81f187dc7a050a2cd7ddc6d58554d0e4139230efc3e59e
[INFO] running `Command { std: "docker" "start" "-a" "2f61512576bc8192db81f187dc7a050a2cd7ddc6d58554d0e4139230efc3e59e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2f61512576bc8192db81f187dc7a050a2cd7ddc6d58554d0e4139230efc3e59e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2f61512576bc8192db81f187dc7a050a2cd7ddc6d58554d0e4139230efc3e59e", kill_on_drop: false }`
[INFO] [stdout] 2f61512576bc8192db81f187dc7a050a2cd7ddc6d58554d0e4139230efc3e59e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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 -Dunmustuse_in_always_ok" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3d673743e59705a38eacdf57ba8edd96d8e2dbfc5d39726543fbee0abc5bcdd4
[INFO] running `Command { std: "docker" "start" "-a" "3d673743e59705a38eacdf57ba8edd96d8e2dbfc5d39726543fbee0abc5bcdd4", kill_on_drop: false }`
[INFO] [stderr]     Checking rcc v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/parser.rs:10:10
[INFO] [stdout]    |
[INFO] [stdout] 10 |     UnOp(Box<UnOpNode>),
[INFO] [stdout]    |     ---- ^^^^^^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `NodeType` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 10 -     UnOp(Box<UnOpNode>),
[INFO] [stdout] 10 +     UnOp(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `operation` and `inner_expression` are never read
[INFO] [stdout]   --> src/parser.rs:60:9
[INFO] [stdout]    |
[INFO] [stdout] 59 | pub struct UnOpNode {
[INFO] [stdout]    |            -------- fields in this struct
[INFO] [stdout] 60 |     pub operation: TokenType,
[INFO] [stdout]    |         ^^^^^^^^^
[INFO] [stdout] 61 |     pub inner_expression: Box<NodeType>,
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `UnOpNode` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/lexer.rs:31:21
[INFO] [stdout]    |
[INFO] [stdout] 31 |     pub fn new(src: &String) -> Lexer {
[INFO] [stdout]    |                     ^^^^^^^     ^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                     |
[INFO] [stdout]    |                     the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 31 |     pub fn new(src: &String) -> Lexer<'_> {
[INFO] [stdout]    |                                      ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/lexer.rs:38:16
[INFO] [stdout]    |
[INFO] [stdout] 38 |     pub fn lex(&mut self) -> Result<&Lexer, &'static str> {
[INFO] [stdout]    |                ^^^^^^^^^            ^^^^^^
[INFO] [stdout]    |                |                    ||
[INFO] [stdout]    |                |                    |the same lifetime is hidden here
[INFO] [stdout]    |                |                    the same lifetime is elided here
[INFO] [stdout]    |                the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 38 |     pub fn lex(&mut self) -> Result<&Lexer<'_>, &'static str> {
[INFO] [stdout]    |                                           ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]   --> src/lexer.rs:44:19
[INFO] [stdout]    |
[INFO] [stdout] 44 |         while i < len.try_into().unwrap() {
[INFO] [stdout]    |                   ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]   --> src/lexer.rs:54:72
[INFO] [stdout]    |
[INFO] [stdout] 54 |                 while self.source.as_bytes()[i] as char != '\n' && i < len.try_into().unwrap() {
[INFO] [stdout]    |                                                                        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/parser.rs:10:10
[INFO] [stdout]    |
[INFO] [stdout] 10 |     UnOp(Box<UnOpNode>),
[INFO] [stdout]    |     ---- ^^^^^^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `NodeType` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 10 -     UnOp(Box<UnOpNode>),
[INFO] [stdout] 10 +     UnOp(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rcc` (bin "rcc") due to 2 previous errors; 4 warnings emitted
[INFO] [stdout] warning: fields `operation` and `inner_expression` are never read
[INFO] [stdout]   --> src/parser.rs:60:9
[INFO] [stdout]    |
[INFO] [stdout] 59 | pub struct UnOpNode {
[INFO] [stdout]    |            -------- fields in this struct
[INFO] [stdout] 60 |     pub operation: TokenType,
[INFO] [stdout]    |         ^^^^^^^^^
[INFO] [stdout] 61 |     pub inner_expression: Box<NodeType>,
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `UnOpNode` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/lexer.rs:31:21
[INFO] [stdout]    |
[INFO] [stdout] 31 |     pub fn new(src: &String) -> Lexer {
[INFO] [stdout]    |                     ^^^^^^^     ^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                     |
[INFO] [stdout]    |                     the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 31 |     pub fn new(src: &String) -> Lexer<'_> {
[INFO] [stdout]    |                                      ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/lexer.rs:38:16
[INFO] [stdout]    |
[INFO] [stdout] 38 |     pub fn lex(&mut self) -> Result<&Lexer, &'static str> {
[INFO] [stdout]    |                ^^^^^^^^^            ^^^^^^
[INFO] [stdout]    |                |                    ||
[INFO] [stdout]    |                |                    |the same lifetime is hidden here
[INFO] [stdout]    |                |                    the same lifetime is elided here
[INFO] [stdout]    |                the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 38 |     pub fn lex(&mut self) -> Result<&Lexer<'_>, &'static str> {
[INFO] [stdout]    |                                           ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]   --> src/lexer.rs:44:19
[INFO] [stdout]    |
[INFO] [stdout] 44 |         while i < len.try_into().unwrap() {
[INFO] [stdout]    |                   ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]   --> src/lexer.rs:54:72
[INFO] [stdout]    |
[INFO] [stdout] 54 |                 while self.source.as_bytes()[i] as char != '\n' && i < len.try_into().unwrap() {
[INFO] [stdout]    |                                                                        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rcc` (bin "rcc" test) due to 2 previous errors; 4 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "3d673743e59705a38eacdf57ba8edd96d8e2dbfc5d39726543fbee0abc5bcdd4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3d673743e59705a38eacdf57ba8edd96d8e2dbfc5d39726543fbee0abc5bcdd4", kill_on_drop: false }`
[INFO] [stdout] 3d673743e59705a38eacdf57ba8edd96d8e2dbfc5d39726543fbee0abc5bcdd4
