[INFO] cloning repository https://github.com/kotokz/snowball
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kotokz/snowball" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkotokz%2Fsnowball", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkotokz%2Fsnowball'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4dac0493dcaf0bd5981b81a3248c82e0176710c5
[INFO] checking kotokz/snowball against master#4fa76a4a7742bb9c1febe33019f5a9e7e4839a65 for pr-83744
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkotokz%2Fsnowball" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/kotokz/snowball on toolchain 4fa76a4a7742bb9c1febe33019f5a9e7e4839a65
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4fa76a4a7742bb9c1febe33019f5a9e7e4839a65" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/kotokz/snowball
[INFO] finished tweaking git repo https://github.com/kotokz/snowball
[INFO] tweaked toml for git repo https://github.com/kotokz/snowball written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/kotokz/snowball already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4fa76a4a7742bb9c1febe33019f5a9e7e4839a65" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] error: the lock file /workspace/builds/worker-6/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[INFO] the lockfile is outdated, regenerating it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 `Command { std: "/workspace/cargo-home/bin/cargo" "+4fa76a4a7742bb9c1febe33019f5a9e7e4839a65" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4fa76a4a7742bb9c1febe33019f5a9e7e4839a65" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded user32-sys v0.2.0
[INFO] [stderr]   Downloaded cookie v0.2.5
[INFO] [stderr]   Downloaded clippy v0.0.302
[INFO] [stderr]   Downloaded quasi_codegen v0.20.0
[INFO] [stderr]   Downloaded openssl-sys-extras v0.7.14
[INFO] [stderr]   Downloaded quasi_macros v0.20.0
[INFO] [stderr]   Downloaded pnacl-build-helper v1.4.11
[INFO] [stderr]   Downloaded gdi32-sys v0.2.0
[INFO] [stderr]   Downloaded walkdir v1.0.7
[INFO] [stderr]   Downloaded openssl v0.7.14
[INFO] [stderr]   Downloaded quasi v0.20.1
[INFO] [stderr]   Downloaded serde_macros v0.8.9
[INFO] [stderr]   Downloaded serde_codegen v0.8.9
[INFO] [stderr]   Downloaded aster v0.27.0
[INFO] [stderr]   Downloaded same-file v0.1.3
[INFO] [stderr]   Downloaded openssl-sys v0.7.17
[INFO] [stderr]   Downloaded serde_codegen_internals v0.8.9
[INFO] [stderr]   Downloaded libressl-pnacl-sys v2.1.6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+4fa76a4a7742bb9c1febe33019f5a9e7e4839a65" "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] a079a1dfbc147c39d21e72eb30cf54beed44ed75b3ea3e597c9ea40519134c82
[INFO] running `Command { std: "docker" "start" "-a" "a079a1dfbc147c39d21e72eb30cf54beed44ed75b3ea3e597c9ea40519134c82", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a079a1dfbc147c39d21e72eb30cf54beed44ed75b3ea3e597c9ea40519134c82", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a079a1dfbc147c39d21e72eb30cf54beed44ed75b3ea3e597c9ea40519134c82", kill_on_drop: false }`
[INFO] [stdout] a079a1dfbc147c39d21e72eb30cf54beed44ed75b3ea3e597c9ea40519134c82
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+4fa76a4a7742bb9c1febe33019f5a9e7e4839a65" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 329d78d6580c12e20395eb0266474bd3e03b9165d95f518e0cfb0885e65ff32c
[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" "329d78d6580c12e20395eb0266474bd3e03b9165d95f518e0cfb0885e65ff32c", kill_on_drop: false }`
[INFO] [stderr]    Compiling gcc v0.3.55
[INFO] [stderr]    Compiling aster v0.27.0
[INFO] [stderr]    Compiling serde_codegen v0.8.9
[INFO] [stderr]    Compiling serde_codegen_internals v0.8.9
[INFO] [stderr]    Compiling quasi v0.20.1
[INFO] [stderr]     Checking bitflags v0.7.0
[INFO] [stderr]     Checking lazy_static v0.2.11
[INFO] [stderr]    Compiling openssl-sys v0.7.17
[INFO] [stderr]    Compiling tokio v1.5.0
[INFO] [stderr]     Checking tracing v0.1.25
[INFO] [stderr]     Checking idna v0.1.5
[INFO] [stderr]    Compiling syn v1.0.69
[INFO] [stderr]     Checking serde_json v1.0.64
[INFO] [stdout] error[E0463]: can't find crate for `syntax`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/serde_codegen_internals-0.8.9/src/lib.rs:13:1
[INFO] [stdout]    |
[INFO] [stdout] 13 | extern crate syntax;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0463]: can't find crate for `syntax`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/quasi-0.20.1/src/lib.rs:23:1
[INFO] [stdout]    |
[INFO] [stdout] 23 | extern crate syntax;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^ can't find crate
[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 E0463`.
[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 E0463`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `quasi`
[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[E0463]: can't find crate for `syntax`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/aster-0.27.0/src/lib.rs:10:1
[INFO] [stdout]    |
[INFO] [stdout] 10 | extern crate syntax;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^ can't find crate
[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 E0463`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "329d78d6580c12e20395eb0266474bd3e03b9165d95f518e0cfb0885e65ff32c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "329d78d6580c12e20395eb0266474bd3e03b9165d95f518e0cfb0885e65ff32c", kill_on_drop: false }`
[INFO] [stdout] 329d78d6580c12e20395eb0266474bd3e03b9165d95f518e0cfb0885e65ff32c