[INFO] updating cached repository https://github.com/hfaulds/queue
[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] 22f94b3e2b94551d132996144296714b5b5cd27b
[INFO] checking hfaulds/queue against master#209b2be09fcaff937480d1fbbe8b31646e361c7a for pr-70917
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhfaulds%2Fqueue" "/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/hfaulds/queue on toolchain 209b2be09fcaff937480d1fbbe8b31646e361c7a
[INFO] running `"/workspace/cargo-home/bin/cargo" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/hfaulds/queue
[INFO] finished tweaking git repo https://github.com/hfaulds/queue
[INFO] tweaked toml for git repo https://github.com/hfaulds/queue written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate git repo https://github.com/hfaulds/queue already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] error: the lock file /workspace/builds/worker-14/source/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] [stderr] If you want to try to generate the lock file without accessing the network, use the --offline flag.
[INFO] the lockfile is outdated, regenerating it
[INFO] running `"/workspace/cargo-home/bin/cargo" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "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" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "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] c18d01e9fc34c6d0114943d5f52384d24424baebd92f60b6d2161d2a1d7c13f6
[INFO] running `"docker" "start" "-a" "c18d01e9fc34c6d0114943d5f52384d24424baebd92f60b6d2161d2a1d7c13f6"`
[INFO] [stderr]    Compiling stainless v0.1.12
[INFO] [stderr]     Checking queue_experiments v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0557]: feature has been removed
[INFO] [stderr]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/stainless-0.1.12/src/lib.rs:7:30
[INFO] [stderr]   |
[INFO] [stderr] 7 | #![feature(plugin_registrar, quote, rustc_private)]
[INFO] [stderr]   |                              ^^^^^ feature has been removed
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]  --> src/parse_commands.rs:7:18
[INFO] [stderr]   |
[INFO] [stderr] 7 |     let buffer = try!(string_from_utf8(buffer));
[INFO] [stderr]   |                  ^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] error[E0463]: can't find crate for `syntax`
[INFO] [stderr]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/stainless-0.1.12/src/lib.rs:171:1
[INFO] [stderr]     |
[INFO] [stderr] 171 | extern crate syntax;
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0463, E0557.
[INFO] [stderr] For more information about an error, try `rustc --explain E0463`.
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]  --> src/parse_commands.rs:9:24
[INFO] [stderr]   |
[INFO] [stderr] 9 |     let command_name = try!(parse_command_name(&mut chars));
[INFO] [stderr]   |                        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/parse_commands.rs:10:21
[INFO] [stderr]    |
[INFO] [stderr] 10 |     let arguments = try!(parse_arguments(&mut chars));
[INFO] [stderr]    |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/parse_commands.rs:50:15
[INFO] [stderr]    |
[INFO] [stderr] 50 |         match try!(parse_argument(buffer)) {
[INFO] [stderr]    |               ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/parse_commands.rs:68:38
[INFO] [stderr]    |
[INFO] [stderr] 68 |                         let result = try!(parse_quoted_string(buffer));
[INFO] [stderr]    |                                      ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/parse_commands.rs:93:33
[INFO] [stderr]    |
[INFO] [stderr] 93 |                         let c = try!(parse_escaped_string(buffer));
[INFO] [stderr]    |                                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/connection.rs:13:21
[INFO] [stderr]    |
[INFO] [stderr] 13 |     reader: &'a mut BufRead,
[INFO] [stderr]    |                     ^^^^^^^ help: use `dyn`: `dyn BufRead`
[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/connection.rs:14:21
[INFO] [stderr]    |
[INFO] [stderr] 14 |     writer: &'a mut Write,
[INFO] [stderr]    |                     ^^^^^ help: use `dyn`: `dyn Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/connection.rs:19:32
[INFO] [stderr]    |
[INFO] [stderr] 19 |     pub fn new(reader: &'a mut BufRead, writer: &'a mut Write, queue_table: &'a QueueTable) -> Connection<'a> {
[INFO] [stderr]    |                                ^^^^^^^ help: use `dyn`: `dyn BufRead`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/connection.rs:19:57
[INFO] [stderr]    |
[INFO] [stderr] 19 |     pub fn new(reader: &'a mut BufRead, writer: &'a mut Write, queue_table: &'a QueueTable) -> Connection<'a> {
[INFO] [stderr]    |                                                         ^^^^^ help: use `dyn`: `dyn Write`
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]   --> src/connection.rs:92:61
[INFO] [stderr]    |
[INFO] [stderr] 92 |     fn exec_pop(&mut self, queue_name: QueueName) -> Result<(String),()> {
[INFO] [stderr]    |                                                             ^^^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] error: could not compile `stainless`.
[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: build failed
[INFO] running `"docker" "inspect" "c18d01e9fc34c6d0114943d5f52384d24424baebd92f60b6d2161d2a1d7c13f6"`
[INFO] running `"docker" "rm" "-f" "c18d01e9fc34c6d0114943d5f52384d24424baebd92f60b6d2161d2a1d7c13f6"`
[INFO] [stdout] c18d01e9fc34c6d0114943d5f52384d24424baebd92f60b6d2161d2a1d7c13f6
