[INFO] fetching crate ic-cdk 0.2.4...
[INFO] checking ic-cdk-0.2.4 against master#4fa76a4a7742bb9c1febe33019f5a9e7e4839a65 for pr-83744
[INFO] extracting crate ic-cdk 0.2.4 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate ic-cdk 0.2.4 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 crates.io crate ic-cdk 0.2.4
[INFO] finished tweaking crates.io crate ic-cdk 0.2.4
[INFO] tweaked toml for crates.io crate ic-cdk 0.2.4 written to /workspace/builds/worker-0/source/Cargo.toml
[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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/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] ac1bcb0a94be4fd077e83459c3105b5c872e992c2ebcbd327afc7b1aee5a2da7
[INFO] running `Command { std: "docker" "start" "-a" "ac1bcb0a94be4fd077e83459c3105b5c872e992c2ebcbd327afc7b1aee5a2da7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ac1bcb0a94be4fd077e83459c3105b5c872e992c2ebcbd327afc7b1aee5a2da7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ac1bcb0a94be4fd077e83459c3105b5c872e992c2ebcbd327afc7b1aee5a2da7", kill_on_drop: false }`
[INFO] [stdout] ac1bcb0a94be4fd077e83459c3105b5c872e992c2ebcbd327afc7b1aee5a2da7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+4fa76a4a7742bb9c1febe33019f5a9e7e4839a65" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d2747b5df25ea6310bf1022334ebe57291247f47d95834537cfbcf210e68bf7c
[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" "d2747b5df25ea6310bf1022334ebe57291247f47d95834537cfbcf210e68bf7c", kill_on_drop: false }`
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling proc-macro2 v1.0.26
[INFO] [stderr]    Compiling syn v1.0.69
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling serde_derive v1.0.125
[INFO] [stderr]    Compiling serde v1.0.125
[INFO] [stderr]    Compiling libc v0.2.93
[INFO] [stderr]    Compiling regex-syntax v0.6.23
[INFO] [stderr]    Compiling typenum v1.13.0
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling crunchy v0.2.2
[INFO] [stderr]    Compiling byteorder v1.4.3
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling tiny-keccak v2.0.2
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling hashbrown v0.9.1
[INFO] [stderr]    Compiling siphasher v0.3.5
[INFO] [stderr]    Compiling either v1.6.1
[INFO] [stderr]    Compiling new_debug_unreachable v1.0.4
[INFO] [stderr]    Compiling fixedbitset v0.2.0
[INFO] [stderr]    Compiling bit-vec v0.6.3
[INFO] [stderr]    Compiling precomputed-hash v0.1.1
[INFO] [stderr]    Compiling pico-args v0.4.0
[INFO] [stderr]    Compiling crc32fast v1.2.1
[INFO] [stderr]    Compiling diff v0.1.12
[INFO] [stderr]     Checking opaque-debug v0.3.0
[INFO] [stderr]     Checking cpuid-bool v0.1.2
[INFO] [stderr]    Compiling utf8-ranges v1.0.4
[INFO] [stderr]    Compiling beef v0.5.0
[INFO] [stderr]    Compiling fnv v1.0.7
[INFO] [stderr]     Checking arrayvec v0.5.2
[INFO] [stderr]     Checking termcolor v1.1.2
[INFO] [stderr]     Checking typed-arena v2.0.1
[INFO] [stderr]     Checking base32 v0.4.0
[INFO] [stderr]     Checking hex v0.4.3
[INFO] [stderr]    Compiling paste v1.0.5
[INFO] [stderr]     Checking leb128 v0.2.4
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling itertools v0.10.0
[INFO] [stderr]    Compiling bit-set v0.5.2
[INFO] [stderr]    Compiling phf_shared v0.8.0
[INFO] [stderr]    Compiling generic-array v0.14.4
[INFO] [stderr]    Compiling indexmap v1.6.2
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling num-bigint v0.3.2
[INFO] [stderr]     Checking codespan-reporting v0.9.5
[INFO] [stderr]     Checking pretty v0.10.0
[INFO] [stderr]    Compiling ena v0.14.0
[INFO] [stderr]    Compiling string_cache v0.8.1
[INFO] [stderr]    Compiling aho-corasick v0.7.15
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling petgraph v0.5.1
[INFO] [stderr]    Compiling dirs v1.0.5
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]     Checking regex v1.4.5
[INFO] [stderr]    Compiling term v0.5.2
[INFO] [stderr]     Checking digest v0.9.0
[INFO] [stderr]     Checking block-buffer v0.9.0
[INFO] [stderr]    Compiling ascii-canvas v2.0.0
[INFO] [stderr]     Checking sha2 v0.9.3
[INFO] [stderr]     Checking lalrpop-util v0.19.5
[INFO] [stderr]    Compiling lalrpop v0.19.5
[INFO] [stderr]    Compiling thiserror-impl v1.0.24
[INFO] [stderr]    Compiling logos-derive v0.12.0
[INFO] [stderr]    Compiling derivative v2.2.0
[INFO] [stderr]    Compiling candid_derive v0.4.4
[INFO] [stderr]     Checking thiserror v1.0.24
[INFO] [stderr]     Checking logos v0.12.0
[INFO] [stderr]     Checking serde_bytes v0.11.5
[INFO] [stderr]     Checking ic-types v0.1.2
[INFO] [stderr]    Compiling toml v0.5.8
[INFO] [stderr]    Compiling proc-macro-crate v0.1.5
[INFO] [stderr]    Compiling num_enum_derive v0.5.1
[INFO] [stderr]    Compiling candid v0.6.21
[INFO] [stderr]     Checking num_enum v0.5.1
[INFO] [stderr]     Checking ic-cdk v0.2.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Poll`
[INFO] [stdout]  --> src/futures.rs:3:26
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::task::{Context, Poll};
[INFO] [stdout]   |                          ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Poll`
[INFO] [stdout]  --> src/futures.rs:3:26
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::task::{Context, Poll};
[INFO] [stdout]   |                          ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2m 25s
[INFO] running `Command { std: "docker" "inspect" "d2747b5df25ea6310bf1022334ebe57291247f47d95834537cfbcf210e68bf7c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d2747b5df25ea6310bf1022334ebe57291247f47d95834537cfbcf210e68bf7c", kill_on_drop: false }`
[INFO] [stdout] d2747b5df25ea6310bf1022334ebe57291247f47d95834537cfbcf210e68bf7c