[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]    fb4346b..8f23ee8  master     -> master
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 8f23ee80909f8c941083202454088e36e8662642
[INFO] checking alekratz/file-lang against master#446e5e57b667c841ba3ebb4b41b44fb98bd3af4b for pr-65294
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Falekratz%2Ffile-lang" "/workspace/builds/worker-9/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/alekratz/file-lang on toolchain 446e5e57b667c841ba3ebb4b41b44fb98bd3af4b
[INFO] running `"/workspace/cargo-home/bin/cargo" "+446e5e57b667c841ba3ebb4b41b44fb98bd3af4b" "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-9/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" "+446e5e57b667c841ba3ebb4b41b44fb98bd3af4b" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "+446e5e57b667c841ba3ebb4b41b44fb98bd3af4b" "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] a0dbd9344fbc5bd9c899bfcf4759ca57231a0822908d832e1fb3f11a7427e9a1
[INFO] running `"docker" "start" "-a" "a0dbd9344fbc5bd9c899bfcf4759ca57231a0822908d832e1fb3f11a7427e9a1"`
[INFO] [stderr]    Compiling proc-macro2 v1.0.3
[INFO] [stderr]     Checking backtrace-sys v0.1.31
[INFO] [stderr]    Compiling syn v0.12.15
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]     Checking backtrace v0.3.37
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]    Compiling syn v1.0.5
[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]    Compiling snafu-derive v0.5.0
[INFO] [stderr]    Compiling derivative v1.0.3
[INFO] [stderr]     Checking structopt v0.3.1
[INFO] [stderr]     Checking snafu v0.5.0
[INFO] [stderr]     Checking file-lang v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `span`
[INFO] [stderr]    --> src/compile/translate/ir_to_inst.rs:193:37
[INFO] [stderr]     |
[INFO] [stderr] 193 |             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:193:37
[INFO] [stderr]     |
[INFO] [stderr] 193 |             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:93:5
[INFO] [stderr]    |
[INFO] [stderr] 93 |     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:93:5
[INFO] [stderr]    |
[INFO] [stderr] 93 |     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 1m 01s
[INFO] running `"docker" "inspect" "a0dbd9344fbc5bd9c899bfcf4759ca57231a0822908d832e1fb3f11a7427e9a1"`
[INFO] running `"docker" "rm" "-f" "a0dbd9344fbc5bd9c899bfcf4759ca57231a0822908d832e1fb3f11a7427e9a1"`
[INFO] [stdout] a0dbd9344fbc5bd9c899bfcf4759ca57231a0822908d832e1fb3f11a7427e9a1