[INFO] cloning repository https://github.com/PurpleMyst/synacor-vm
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/PurpleMyst/synacor-vm" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPurpleMyst%2Fsynacor-vm", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPurpleMyst%2Fsynacor-vm'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e2871d55d13cd8cfc08ef2f3146a41fa6f4a5350
[INFO] checking PurpleMyst/synacor-vm against master#7f5a42b073dc2bee2aa625052eb066ee07072048 for pr-78991
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPurpleMyst%2Fsynacor-vm" "/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/PurpleMyst/synacor-vm on toolchain 7f5a42b073dc2bee2aa625052eb066ee07072048
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7f5a42b073dc2bee2aa625052eb066ee07072048" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/PurpleMyst/synacor-vm
[INFO] finished tweaking git repo https://github.com/PurpleMyst/synacor-vm
[INFO] tweaked toml for git repo https://github.com/PurpleMyst/synacor-vm written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/PurpleMyst/synacor-vm already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7f5a42b073dc2bee2aa625052eb066ee07072048" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+7f5a42b073dc2bee2aa625052eb066ee07072048" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c98c27636e985c012743b47258de1982d2df040ba02406819a10b8c5ec02b32b
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "c98c27636e985c012743b47258de1982d2df040ba02406819a10b8c5ec02b32b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c98c27636e985c012743b47258de1982d2df040ba02406819a10b8c5ec02b32b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c98c27636e985c012743b47258de1982d2df040ba02406819a10b8c5ec02b32b", kill_on_drop: false }`
[INFO] [stdout] c98c27636e985c012743b47258de1982d2df040ba02406819a10b8c5ec02b32b
[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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+7f5a42b073dc2bee2aa625052eb066ee07072048" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e1609443eb2e35a7bc5b53df2df5c76b56e18f77ba68fcd00ce602251600735d
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "e1609443eb2e35a7bc5b53df2df5c76b56e18f77ba68fcd00ce602251600735d", kill_on_drop: false }`
[INFO] [stderr]     Checking num-traits v0.2.2
[INFO] [stderr]     Checking colored v1.6.0
[INFO] [stderr]     Checking serde_json v1.0.13
[INFO] [stderr]     Checking synacor-vm v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0599]: no method named `exact_chunks` found for struct `Vec<u8>` in the current scope
[INFO] [stdout]    --> src/vm.rs:156:25
[INFO] [stdout]     |
[INFO] [stdout] 156 |         fs::read(path)?.exact_chunks(2).for_each(|chunk| {
[INFO] [stdout]     |                         ^^^^^^^^^^^^ help: there is an associated function with a similar name: `as_chunks`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0599`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `synacor-vm`
[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] [stdout] error[E0599]: no method named `exact_chunks` found for struct `Vec<u8>` in the current scope
[INFO] [stdout]    --> src/vm.rs:156:25
[INFO] [stdout]     |
[INFO] [stdout] 156 |         fs::read(path)?.exact_chunks(2).for_each(|chunk| {
[INFO] [stdout]     |                         ^^^^^^^^^^^^ help: there is an associated function with a similar name: `as_chunks`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0599`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "e1609443eb2e35a7bc5b53df2df5c76b56e18f77ba68fcd00ce602251600735d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e1609443eb2e35a7bc5b53df2df5c76b56e18f77ba68fcd00ce602251600735d", kill_on_drop: false }`
[INFO] [stdout] e1609443eb2e35a7bc5b53df2df5c76b56e18f77ba68fcd00ce602251600735d