[INFO] cloning repository https://github.com/narayn60/matasano-solutions
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/narayn60/matasano-solutions" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnarayn60%2Fmatasano-solutions"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnarayn60%2Fmatasano-solutions'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 4678796bdf6fe38a121eaae4e6c4fa2354a1fb9b
[INFO] checking narayn60/matasano-solutions against try#e4dba30b9b475d8750370c4dfb49b6541990904d for pr-71393
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnarayn60%2Fmatasano-solutions" "/workspace/builds/worker-12/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/narayn60/matasano-solutions on toolchain e4dba30b9b475d8750370c4dfb49b6541990904d
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/narayn60/matasano-solutions
[INFO] finished tweaking git repo https://github.com/narayn60/matasano-solutions
[INFO] tweaked toml for git repo https://github.com/narayn60/matasano-solutions written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/narayn60/matasano-solutions already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] warning: path `/workspace/builds/worker-12/source/src/Set1.rs` was erroneously implicitly accepted for binary `Set1`,
[INFO] [stderr] please set bin.path in Cargo.toml
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "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] 699d7d892c6ed39cbc392e697a0d855e3eb17e84c8d8c778210b5d697547783b
[INFO] running `"docker" "start" "-a" "699d7d892c6ed39cbc392e697a0d855e3eb17e84c8d8c778210b5d697547783b"`
[INFO] [stderr] warning: path `/opt/rustwide/workdir/src/Set1.rs` was erroneously implicitly accepted for binary `Set1`,
[INFO] [stderr] please set bin.path in Cargo.toml
[INFO] [stderr]     Checking Set1 v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr] error: expected identifier, found keyword `mod`
[INFO] [stderr]  --> src/Set1.rs:3:25
[INFO] [stderr]   |
[INFO] [stderr] 3 | use serialize::base64::{mod, ToBase64};
[INFO] [stderr]   |                         ^^^ expected identifier, found keyword
[INFO] [stderr]   |
[INFO] [stderr] help: you can escape reserved keywords to use them as identifiers
[INFO] [stderr]   |
[INFO] [stderr] 3 | use serialize::base64::{r#mod, ToBase64};
[INFO] [stderr]   |                         ^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0463]: can't find crate for `serialize`
[INFO] [stderr]  --> src/Set1.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | extern crate serialize;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0463`.
[INFO] [stderr] error: could not compile `Set1`.
[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: expected identifier, found keyword `mod`
[INFO] [stderr]  --> src/Set1.rs:3:25
[INFO] [stderr]   |
[INFO] [stderr] 3 | use serialize::base64::{mod, ToBase64};
[INFO] [stderr]   |                         ^^^ expected identifier, found keyword
[INFO] [stderr]   |
[INFO] [stderr] help: you can escape reserved keywords to use them as identifiers
[INFO] [stderr]   |
[INFO] [stderr] 3 | use serialize::base64::{r#mod, ToBase64};
[INFO] [stderr]   |                         ^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0463]: can't find crate for `serialize`
[INFO] [stderr]  --> src/Set1.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | extern crate serialize;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0463`.
[INFO] [stderr] error: could not compile `Set1`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "699d7d892c6ed39cbc392e697a0d855e3eb17e84c8d8c778210b5d697547783b"`
[INFO] running `"docker" "rm" "-f" "699d7d892c6ed39cbc392e697a0d855e3eb17e84c8d8c778210b5d697547783b"`
[INFO] [stdout] 699d7d892c6ed39cbc392e697a0d855e3eb17e84c8d8c778210b5d697547783b