[INFO] cloning repository https://github.com/narayn60/matasano-solutions
[INFO] running `Command { std: "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", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnarayn60%2Fmatasano-solutions'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4678796bdf6fe38a121eaae4e6c4fa2354a1fb9b
[INFO] checking narayn60/matasano-solutions against master#36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923 for pr-81863
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnarayn60%2Fmatasano-solutions" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/narayn60/matasano-solutions on toolchain 36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[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-4/source/Cargo.toml
[INFO] crate git repo https://github.com/narayn60/matasano-solutions already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: path `/workspace/builds/worker-4/source/src/Set1.rs` was erroneously implicitly accepted for binary `Set1`,
[INFO] [stderr] please set bin.path in Cargo.toml
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "rustops/crates-build-env@sha256:ce6408862c0f4858e6cd2b85b2cf085ff7d0d6323904d0a94b71664a228554ab" "/opt/rustwide/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 76156fb2a125ba9909bcc3c7d4d7eb642c62f5e64ad5412660661140c6eac563
[INFO] running `Command { std: "docker" "start" "-a" "76156fb2a125ba9909bcc3c7d4d7eb642c62f5e64ad5412660661140c6eac563", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "76156fb2a125ba9909bcc3c7d4d7eb642c62f5e64ad5412660661140c6eac563", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "76156fb2a125ba9909bcc3c7d4d7eb642c62f5e64ad5412660661140c6eac563", kill_on_drop: false }`
[INFO] [stdout] 76156fb2a125ba9909bcc3c7d4d7eb642c62f5e64ad5412660661140c6eac563
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "-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" "rustops/crates-build-env@sha256:ce6408862c0f4858e6cd2b85b2cf085ff7d0d6323904d0a94b71664a228554ab" "/opt/rustwide/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] a7b2365a1f0860eac1148d600e831be0d847cf1359d2daf73451871c050986d2
[INFO] running `Command { std: "docker" "start" "-a" "a7b2365a1f0860eac1148d600e831be0d847cf1359d2daf73451871c050986d2", kill_on_drop: false }`
[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] [stdout] error: expected identifier, found keyword `mod`
[INFO] [stdout]  --> src/Set1.rs:3:25
[INFO] [stdout]   |
[INFO] [stdout] 3 | use serialize::base64::{mod, ToBase64};
[INFO] [stdout]   |                         ^^^ expected identifier, found keyword
[INFO] [stdout]   |
[INFO] [stdout] help: you can escape reserved keywords to use them as identifiers
[INFO] [stdout]   |
[INFO] [stdout] 3 | use serialize::base64::{r#mod, ToBase64};
[INFO] [stdout]   |                         ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: expected identifier, found keyword `mod`
[INFO] [stdout]  --> src/Set1.rs:3:25
[INFO] [stdout]   |
[INFO] [stdout] 3 | use serialize::base64::{mod, ToBase64};
[INFO] [stdout]   |                         ^^^ expected identifier, found keyword
[INFO] [stdout]   |
[INFO] [stdout] help: you can escape reserved keywords to use them as identifiers
[INFO] [stdout]   |
[INFO] [stdout] 3 | use serialize::base64::{r#mod, ToBase64};
[INFO] [stdout]   |                         ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0463]: can't find crate for `serialize`
[INFO] [stdout]  --> src/Set1.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | extern crate serialize;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0463]: can't find crate for `serialize`
[INFO] [stdout]  --> src/Set1.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | extern crate serialize;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0463`.
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0463`.
[INFO] [stdout] 
[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: build failed
[INFO] running `Command { std: "docker" "inspect" "a7b2365a1f0860eac1148d600e831be0d847cf1359d2daf73451871c050986d2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a7b2365a1f0860eac1148d600e831be0d847cf1359d2daf73451871c050986d2", kill_on_drop: false }`
[INFO] [stdout] a7b2365a1f0860eac1148d600e831be0d847cf1359d2daf73451871c050986d2