[INFO] fetching crate darkcontract 0.0.5...
[INFO] checking darkcontract-0.0.5 against try#f6e2f78768c57172b99c3e85892f867894dc7e30 for pr-75502
[INFO] extracting crate darkcontract 0.0.5 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate darkcontract 0.0.5 on toolchain f6e2f78768c57172b99c3e85892f867894dc7e30
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate darkcontract 0.0.5
[INFO] finished tweaking crates.io crate darkcontract 0.0.5
[INFO] tweaked toml for crates.io crate darkcontract 0.0.5 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate darkcontract 0.0.5 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "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:e18d859f9e32a1da89bc7b2d7d51e13b57342044d1295d9fc0dd0068c58eb3d1" "/opt/rustwide/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "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] 77cb9a14746b579642634912116959adb3494674a2f88d1b484d951feb7c63fc
[INFO] running `Command { std: "docker" "start" "-a" "77cb9a14746b579642634912116959adb3494674a2f88d1b484d951feb7c63fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "77cb9a14746b579642634912116959adb3494674a2f88d1b484d951feb7c63fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "77cb9a14746b579642634912116959adb3494674a2f88d1b484d951feb7c63fc", kill_on_drop: false }`
[INFO] [stdout] 77cb9a14746b579642634912116959adb3494674a2f88d1b484d951feb7c63fc
[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:e18d859f9e32a1da89bc7b2d7d51e13b57342044d1295d9fc0dd0068c58eb3d1" "/opt/rustwide/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c2cb94ae7f3a0514d7ba3a5441e1366b5292fc96e73ef7f7f25ed00644edc01f
[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" "c2cb94ae7f3a0514d7ba3a5441e1366b5292fc96e73ef7f7f25ed00644edc01f", kill_on_drop: false }`
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling typenum v1.11.2
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling syn v1.0.14
[INFO] [stderr]     Checking byte-tools v0.3.1
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling ryu v1.0.2
[INFO] [stderr]    Compiling serde v1.0.104
[INFO] [stderr]     Checking fake-simd v0.1.2
[INFO] [stderr]     Checking subtle v2.2.2
[INFO] [stderr]     Checking either v1.5.3
[INFO] [stderr]     Checking opaque-debug v0.2.3
[INFO] [stderr]     Checking unicode-width v0.1.7
[INFO] [stderr]     Checking itoa v0.4.5
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking vec_map v0.8.1
[INFO] [stderr]     Checking block-padding v0.1.5
[INFO] [stderr]     Checking itertools v0.8.2
[INFO] [stderr]    Compiling proc-macro2 v1.0.8
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking dirs-sys v0.3.4
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking bls12_381 v0.1.1
[INFO] [stderr]     Checking dirs v2.0.2
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]     Checking rand_chacha v0.2.1
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking generic-array v0.12.3
[INFO] [stderr]     Checking digest v0.8.1
[INFO] [stderr]     Checking block-buffer v0.7.3
[INFO] [stderr]     Checking sha2 v0.8.1
[INFO] [stderr]     Checking darkcontract v0.0.5 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling serde_derive v1.0.104
[INFO] [stderr]     Checking serde_json v1.0.48
[INFO] [stdout] error[E0463]: can't find crate for `darktoken`
[INFO] [stdout]  --> examples/darkcontract.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | extern crate darktoken;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `darkcontract`.
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0463`.
[INFO] [stdout] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: associated function is never used: `from_string`
[INFO] [stdout]   --> examples/test.rs:39:8
[INFO] [stdout]    |
[INFO] [stdout] 39 |     fn from_string(&self, serialized: &str) -> Self {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "c2cb94ae7f3a0514d7ba3a5441e1366b5292fc96e73ef7f7f25ed00644edc01f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c2cb94ae7f3a0514d7ba3a5441e1366b5292fc96e73ef7f7f25ed00644edc01f", kill_on_drop: false }`
[INFO] [stdout] c2cb94ae7f3a0514d7ba3a5441e1366b5292fc96e73ef7f7f25ed00644edc01f