[INFO] fetching crate ec-client 0.1.0...
[INFO] extracting crate ec-client 0.1.0 into work/ex/beta-1.37-6/sources/1.36.0/reg/ec-client/0.1.0
[INFO] extracting crate ec-client 0.1.0 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/ec-client/0.1.0
[INFO] validating manifest of ec-client-0.1.0 on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of ec-client-0.1.0 on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing ec-client-0.1.0
[INFO] finished frobbing ec-client-0.1.0
[INFO] frobbed toml for ec-client-0.1.0 written to work/ex/beta-1.37-6/sources/1.36.0/reg/ec-client/0.1.0/Cargo.toml
[INFO] started frobbing ec-client-0.1.0
[INFO] finished frobbing ec-client-0.1.0
[INFO] frobbed toml for ec-client-0.1.0 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/ec-client/0.1.0/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing ec-client-0.1.0 against 1.36.0 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-4/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/ec-client/0.1.0:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.36.0" "build" "--frozen"`
[INFO] [stdout] 1a2997a7e083b09f03de5c69c2f89e8914e8bf3bc17ee91ed7180de55920a443
[INFO] running `"docker" "start" "-a" "1a2997a7e083b09f03de5c69c2f89e8914e8bf3bc17ee91ed7180de55920a443"`
[INFO] [stderr]    Compiling serde_cbor v0.9.0
[INFO] [stderr]    Compiling serde_bytes v0.11.1
[INFO] [stderr]    Compiling ec-client v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `from_slice`
[INFO] [stderr]  --> src/lib.rs:7:18
[INFO] [stderr]   |
[INFO] [stderr] 7 | use serde_cbor::{from_slice, to_vec};
[INFO] [stderr]   |                  ^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `resp`
[INFO] [stderr]   --> src/lib.rs:72:9
[INFO] [stderr]    |
[INFO] [stderr] 72 |     let resp = client
[INFO] [stderr]    |         ^^^^ help: consider prefixing with an underscore: `_resp`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.81s
[INFO] running `"docker" "inspect" "1a2997a7e083b09f03de5c69c2f89e8914e8bf3bc17ee91ed7180de55920a443"`
[INFO] running `"docker" "rm" "-f" "1a2997a7e083b09f03de5c69c2f89e8914e8bf3bc17ee91ed7180de55920a443"`
[INFO] [stdout] 1a2997a7e083b09f03de5c69c2f89e8914e8bf3bc17ee91ed7180de55920a443
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-4/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/ec-client/0.1.0:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.36.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] e44d583374b261a60b1156bb27f8bc1dbe14533caf9814fa378cde9f262b1ef5
[INFO] running `"docker" "start" "-a" "e44d583374b261a60b1156bb27f8bc1dbe14533caf9814fa378cde9f262b1ef5"`
[INFO] [stderr]    Compiling ec-client v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `from_slice`
[INFO] [stderr]  --> src/lib.rs:7:18
[INFO] [stderr]   |
[INFO] [stderr] 7 | use serde_cbor::{from_slice, to_vec};
[INFO] [stderr]   |                  ^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `resp`
[INFO] [stderr]   --> src/lib.rs:72:9
[INFO] [stderr]    |
[INFO] [stderr] 72 |     let resp = client
[INFO] [stderr]    |         ^^^^ help: consider prefixing with an underscore: `_resp`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.14s
[INFO] running `"docker" "inspect" "e44d583374b261a60b1156bb27f8bc1dbe14533caf9814fa378cde9f262b1ef5"`
[INFO] running `"docker" "rm" "-f" "e44d583374b261a60b1156bb27f8bc1dbe14533caf9814fa378cde9f262b1ef5"`
[INFO] [stdout] e44d583374b261a60b1156bb27f8bc1dbe14533caf9814fa378cde9f262b1ef5
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-4/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/ec-client/0.1.0:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.36.0" "test" "--frozen"`
[INFO] [stdout] 78db92f96707344c9eb3e579b2ee0381cc1190c4032517541d1c62bfb79f919b
[INFO] running `"docker" "start" "-a" "78db92f96707344c9eb3e579b2ee0381cc1190c4032517541d1c62bfb79f919b"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.10s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/ec_client-f956143522f86aa3
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests ec-client
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "78db92f96707344c9eb3e579b2ee0381cc1190c4032517541d1c62bfb79f919b"`
[INFO] running `"docker" "rm" "-f" "78db92f96707344c9eb3e579b2ee0381cc1190c4032517541d1c62bfb79f919b"`
[INFO] [stdout] 78db92f96707344c9eb3e579b2ee0381cc1190c4032517541d1c62bfb79f919b