[INFO] crate specs 0.15.1 is already in cache
[INFO] checking specs-0.15.1 against try#e922e6444795ab795fab1943288aee3d543699b8 for pr-66852
[INFO] extracting crate specs 0.15.1 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate specs 0.15.1 on toolchain e922e6444795ab795fab1943288aee3d543699b8
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e922e6444795ab795fab1943288aee3d543699b8" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate specs 0.15.1
[INFO] removed 7 missing examples
[INFO] finished tweaking crates.io crate specs 0.15.1
[INFO] tweaked toml for crates.io crate specs 0.15.1 written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate crates.io crate specs 0.15.1 already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e922e6444795ab795fab1943288aee3d543699b8" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "+e922e6444795ab795fab1943288aee3d543699b8" "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] 2f830c24fd53691cf23ca76ad58fb66119788c22f75f3f1ec09fd292a0dc7bce
[INFO] running `"docker" "start" "-a" "2f830c24fd53691cf23ca76ad58fb66119788c22f75f3f1ec09fd292a0dc7bce"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling syn v0.15.39
[INFO] [stderr]    Compiling arrayvec v0.4.10
[INFO] [stderr]    Compiling serde v1.0.94
[INFO] [stderr]    Compiling memchr v2.2.0
[INFO] [stderr]     Checking same-file v1.0.4
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling num-complex v0.2.3
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling hashbrown v0.6.0
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling num-rational v0.2.2
[INFO] [stderr]     Checking crossbeam-utils v0.6.5
[INFO] [stderr]    Compiling c2-chacha v0.2.2
[INFO] [stderr]     Checking itertools v0.8.0
[INFO] [stderr]     Checking matrixmultiply v0.2.2
[INFO] [stderr]    Compiling libc v0.2.58
[INFO] [stderr]     Checking walkdir v2.2.8
[INFO] [stderr]     Checking getrandom v0.1.3
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking atty v0.2.11
[INFO] [stderr]    Compiling quote v0.6.12
[INFO] [stderr]     Checking regex-automata v0.1.7
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking generic-array v0.12.3
[INFO] [stderr]     Checking approx v0.3.2
[INFO] [stderr]     Checking crossbeam-queue v0.1.2
[INFO] [stderr]    Compiling syn v1.0.5
[INFO] [stderr]     Checking rand_core v0.5.0
[INFO] [stderr]     Checking rand_os v0.2.2
[INFO] [stderr]     Checking rand_chacha v0.2.0
[INFO] [stderr]     Checking rand_xoshiro v0.3.1
[INFO] [stderr]     Checking csv-core v0.1.6
[INFO] [stderr]     Checking crossbeam-epoch v0.7.1
[INFO] [stderr]     Checking rand v0.7.0
[INFO] [stderr]     Checking criterion-plot v0.4.0
[INFO] [stderr]     Checking alga v0.9.1
[INFO] [stderr]     Checking crossbeam-deque v0.6.3
[INFO] [stderr]     Checking rayon-core v1.5.0
[INFO] [stderr]     Checking rayon v1.1.0
[INFO] [stderr]    Compiling proc-macro-hack v0.5.9
[INFO] [stderr]     Checking nalgebra v0.18.1
[INFO] [stderr]     Checking hibitset v0.6.1
[INFO] [stderr]    Compiling const-random-macro v0.1.6
[INFO] [stderr]     Checking const-random v0.1.6
[INFO] [stderr]     Checking ahash v0.2.12
[INFO] [stderr]    Compiling serde_derive v1.0.94
[INFO] [stderr]    Compiling shred-derive v0.6.1
[INFO] [stderr]    Compiling derivative v1.0.2
[INFO] [stderr]    Compiling specs-derive v0.4.0
[INFO] [stderr]     Checking shred v0.9.3
[INFO] [stderr]     Checking specs v0.15.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking serde_json v1.0.39
[INFO] [stderr]     Checking bstr v0.2.1
[INFO] [stderr]     Checking ron v0.5.1
[INFO] [stderr]     Checking csv v1.1.0
[INFO] [stderr]     Checking tinytemplate v1.0.2
[INFO] [stderr]     Checking criterion v0.3.0
[INFO] [stderr] error[E0463]: can't find crate for `serde`
[INFO] [stderr]  --> examples/saveload.rs:3:1
[INFO] [stderr]   |
[INFO] [stderr] 3 | extern crate serde;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0463`.
[INFO] [stderr] error: could not compile `specs`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "2f830c24fd53691cf23ca76ad58fb66119788c22f75f3f1ec09fd292a0dc7bce"`
[INFO] running `"docker" "rm" "-f" "2f830c24fd53691cf23ca76ad58fb66119788c22f75f3f1ec09fd292a0dc7bce"`
[INFO] [stdout] 2f830c24fd53691cf23ca76ad58fb66119788c22f75f3f1ec09fd292a0dc7bce