[INFO] cloning repository https://github.com/mycorrhiza/ipfsdc-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mycorrhiza/ipfsdc-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmycorrhiza%2Fipfsdc-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmycorrhiza%2Fipfsdc-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 58d34792b2e6359494fdad25ad54e2af8e4669a3
[INFO] checking mycorrhiza/ipfsdc-rs against master#de32266a1780aa4ef748ce7f6200a1554fad0aca for pr-75585
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmycorrhiza%2Fipfsdc-rs" "/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/mycorrhiza/ipfsdc-rs on toolchain de32266a1780aa4ef748ce7f6200a1554fad0aca
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+de32266a1780aa4ef748ce7f6200a1554fad0aca" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/mycorrhiza/ipfsdc-rs
[INFO] finished tweaking git repo https://github.com/mycorrhiza/ipfsdc-rs
[INFO] tweaked toml for git repo https://github.com/mycorrhiza/ipfsdc-rs written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/mycorrhiza/ipfsdc-rs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+de32266a1780aa4ef748ce7f6200a1554fad0aca" "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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+de32266a1780aa4ef748ce7f6200a1554fad0aca" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7c09a8c82041501cbdd6fe6042585ec4c64a22eb021d1a8523caf54ab45f6992
[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" "7c09a8c82041501cbdd6fe6042585ec4c64a22eb021d1a8523caf54ab45f6992", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7c09a8c82041501cbdd6fe6042585ec4c64a22eb021d1a8523caf54ab45f6992", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7c09a8c82041501cbdd6fe6042585ec4c64a22eb021d1a8523caf54ab45f6992", kill_on_drop: false }`
[INFO] [stdout] 7c09a8c82041501cbdd6fe6042585ec4c64a22eb021d1a8523caf54ab45f6992
[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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+de32266a1780aa4ef748ce7f6200a1554fad0aca" "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] 6aa0071d75d02aad64730b90231c7e4ec3c15cda534c5fb7655a804e2c9e005c
[INFO] running `Command { std: "docker" "start" "-a" "6aa0071d75d02aad64730b90231c7e4ec3c15cda534c5fb7655a804e2c9e005c", kill_on_drop: false }`
[INFO] [stderr]    Compiling semver v0.1.20
[INFO] [stderr]    Compiling unicode-xid v0.0.3
[INFO] [stderr]    Compiling quote v0.3.5
[INFO] [stderr]     Checking varmint v0.1.2
[INFO] [stderr]     Checking bs58 v0.1.3
[INFO] [stderr]     Checking serde v0.8.17
[INFO] [stderr]     Checking unicode-width v0.1.3
[INFO] [stderr]     Checking strsim v0.5.1
[INFO] [stderr]     Checking unicode-segmentation v0.1.2
[INFO] [stderr]     Checking ansi_term v0.9.0
[INFO] [stderr]     Checking vec_map v0.6.0
[INFO] [stderr]    Compiling libz-sys v1.0.6
[INFO] [stderr]    Compiling openssl-sys v0.7.17
[INFO] [stderr]    Compiling backtrace-sys v0.1.4
[INFO] [stderr]    Compiling curl-sys v0.2.4
[INFO] [stderr]     Checking term_size v0.2.1
[INFO] [stderr]     Checking futures v0.1.3
[INFO] [stderr]     Checking net2 v0.2.26
[INFO] [stderr]    Compiling dbghelp-sys v0.2.0
[INFO] [stderr]    Compiling backtrace v0.2.3
[INFO] [stderr]    Compiling syn v0.9.2
[INFO] [stderr]     Checking clap v2.17.1
[INFO] [stderr]    Compiling rustc_version v0.1.7
[INFO] [stderr]    Compiling nix v0.7.0
[INFO] [stderr]     Checking error-chain v0.5.0
[INFO] [stderr]     Checking mhash v0.2.0
[INFO] [stderr]    Compiling serde_codegen_internals v0.10.0
[INFO] [stderr]    Compiling post-expansion v0.1.0
[INFO] [stderr]     Checking maddr v0.2.0
[INFO] [stderr]    Compiling serde_codegen v0.8.17
[INFO] [stdout] error[E0463]: can't find crate for `syntax`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/serde_codegen-0.8.17/src/lib.rs:21:1
[INFO] [stdout]    |
[INFO] [stdout] 21 | 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: could not compile `serde_codegen`.
[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" "6aa0071d75d02aad64730b90231c7e4ec3c15cda534c5fb7655a804e2c9e005c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6aa0071d75d02aad64730b90231c7e4ec3c15cda534c5fb7655a804e2c9e005c", kill_on_drop: false }`
[INFO] [stdout] 6aa0071d75d02aad64730b90231c7e4ec3c15cda534c5fb7655a804e2c9e005c