[INFO] updating cached repository https://github.com/alekratz/file-lang
[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] [stderr] From https://github.com/alekratz/file-lang
[INFO] [stderr]    8f23ee8..6c0217a  master     -> master
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 6c0217a2e2724c7b117ae41cb9dbcc280cfd3955
[INFO] checking alekratz/file-lang against master#b61e69433951e31f7bd746e22f516a48ad41623b for prs-64470-and-65389
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Falekratz%2Ffile-lang" "/workspace/builds/worker-14/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-14/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/alekratz/file-lang on toolchain b61e69433951e31f7bd746e22f516a48ad41623b
[INFO] running `"/workspace/cargo-home/bin/cargo" "+b61e69433951e31f7bd746e22f516a48ad41623b" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/alekratz/file-lang
[INFO] finished tweaking git repo https://github.com/alekratz/file-lang
[INFO] tweaked toml for git repo https://github.com/alekratz/file-lang written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate git repo https://github.com/alekratz/file-lang already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+b61e69433951e31f7bd746e22f516a48ad41623b" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "+b61e69433951e31f7bd746e22f516a48ad41623b" "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] da6d6f700d79b85c0768c6737aab321ad4df077191e880f5ee2beba0f17b77a3
[INFO] running `"docker" "start" "-a" "da6d6f700d79b85c0768c6737aab321ad4df077191e880f5ee2beba0f17b77a3"`
[INFO] [stderr]    Compiling proc-macro2 v1.0.3
[INFO] [stderr]    Compiling cc v1.0.42
[INFO] [stderr]    Compiling syn v0.12.15
[INFO] [stderr]    Compiling snafu-derive v0.5.0
[INFO] [stderr]    Compiling derivative v1.0.3
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]    Compiling backtrace-sys v0.1.31
[INFO] [stderr]    Compiling syn v1.0.5
[INFO] [stderr]     Checking backtrace v0.3.37
[INFO] [stderr]     Checking snafu v0.5.0
[INFO] [stderr]    Compiling shrinkwraprs v0.2.1
[INFO] [stderr]    Compiling proc-macro-error v0.2.6
[INFO] [stderr]    Compiling structopt-derive v0.3.1
[INFO] [stderr]     Checking structopt v0.3.1
[INFO] [stderr]     Checking file-lang v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused macro definition
[INFO] [stderr]   --> src/common/builtins.rs:43:1
[INFO] [stderr]    |
[INFO] [stderr] 43 | / macro_rules! bin_op_builtin {
[INFO] [stderr] 44 | |     ($name:ident, $expr:expr) => {{
[INFO] [stderr] 45 | |         fn $name (vm: &mut Vm, args: Vec<CopyValue>) {
[INFO] [stderr] 46 | |             let mut args = args.into_iter();
[INFO] [stderr] ...  |
[INFO] [stderr] 51 | |     }};
[INFO] [stderr] 52 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_macros)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused macro definition
[INFO] [stderr]   --> src/common/builtins.rs:43:1
[INFO] [stderr]    |
[INFO] [stderr] 43 | / macro_rules! bin_op_builtin {
[INFO] [stderr] 44 | |     ($name:ident, $expr:expr) => {{
[INFO] [stderr] 45 | |         fn $name (vm: &mut Vm, args: Vec<CopyValue>) {
[INFO] [stderr] 46 | |             let mut args = args.into_iter();
[INFO] [stderr] ...  |
[INFO] [stderr] 51 | |     }};
[INFO] [stderr] 52 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_macros)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `span`
[INFO] [stderr]    --> src/compile/translate/ir_to_inst.rs:196:37
[INFO] [stderr]     |
[INFO] [stderr] 196 |             LValue::Access(Access { span, head, tail }) => {
[INFO] [stderr]     |                                     ^^^^ help: try ignoring the field: `span: _`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `span`
[INFO] [stderr]    --> src/compile/translate/ir_to_inst.rs:196:37
[INFO] [stderr]     |
[INFO] [stderr] 196 |             LValue::Access(Access { span, head, tail }) => {
[INFO] [stderr]     |                                     ^^^^ help: try ignoring the field: `span: _`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `span`
[INFO] [stderr]    --> src/compile/mod.rs:236:14
[INFO] [stderr]     |
[INFO] [stderr] 236 |         let (span, head, tail) = flatten_bin_expr(expr);
[INFO] [stderr]     |              ^^^^ help: consider prefixing with an underscore: `_span`
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `len`
[INFO] [stderr]   --> src/common/span.rs:57:5
[INFO] [stderr]    |
[INFO] [stderr] 57 |     pub fn len(&self) -> usize {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `text`
[INFO] [stderr]   --> src/syn/lexer.rs:97:5
[INFO] [stderr]    |
[INFO] [stderr] 97 |     pub fn text(&self) -> &'text str {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `curr_text`
[INFO] [stderr]   --> src/syn/parser.rs:26:5
[INFO] [stderr]    |
[INFO] [stderr] 26 |     pub fn curr_text(&self) -> &'text str {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `text`
[INFO] [stderr]   --> src/syn/parser.rs:30:5
[INFO] [stderr]    |
[INFO] [stderr] 30 |     pub fn text(&self) -> &'text str {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `CALL_NAME`
[INFO] [stderr]  --> src/vm/object.rs:5:1
[INFO] [stderr]   |
[INFO] [stderr] 5 | pub const CALL_NAME: &str = "__call__";
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `len`
[INFO] [stderr]   --> src/common/span.rs:57:5
[INFO] [stderr]    |
[INFO] [stderr] 57 |     pub fn len(&self) -> usize {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `text`
[INFO] [stderr]   --> src/syn/lexer.rs:97:5
[INFO] [stderr]    |
[INFO] [stderr] 97 |     pub fn text(&self) -> &'text str {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `curr_text`
[INFO] [stderr]   --> src/syn/parser.rs:26:5
[INFO] [stderr]    |
[INFO] [stderr] 26 |     pub fn curr_text(&self) -> &'text str {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `text`
[INFO] [stderr]   --> src/syn/parser.rs:30:5
[INFO] [stderr]    |
[INFO] [stderr] 30 |     pub fn text(&self) -> &'text str {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `CALL_NAME`
[INFO] [stderr]  --> src/vm/object.rs:5:1
[INFO] [stderr]   |
[INFO] [stderr] 5 | pub const CALL_NAME: &str = "__call__";
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 54.00s
[INFO] running `"docker" "inspect" "da6d6f700d79b85c0768c6737aab321ad4df077191e880f5ee2beba0f17b77a3"`
[INFO] running `"docker" "rm" "-f" "da6d6f700d79b85c0768c6737aab321ad4df077191e880f5ee2beba0f17b77a3"`
[INFO] [stdout] da6d6f700d79b85c0768c6737aab321ad4df077191e880f5ee2beba0f17b77a3