[INFO] crate scell 1.0.0 is already in cache
[INFO] extracting crate scell 1.0.0 into work/ex/beta-1.37-6/sources/1.36.0/reg/scell/1.0.0
[INFO] extracting crate scell 1.0.0 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/scell/1.0.0
[INFO] validating manifest of scell-1.0.0 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 scell-1.0.0 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 scell-1.0.0
[INFO] finished frobbing scell-1.0.0
[INFO] frobbed toml for scell-1.0.0 written to work/ex/beta-1.37-6/sources/1.36.0/reg/scell/1.0.0/Cargo.toml
[INFO] started frobbing scell-1.0.0
[INFO] finished frobbing scell-1.0.0
[INFO] frobbed toml for scell-1.0.0 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/scell/1.0.0/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] 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 scell-1.0.0 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-3/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/scell/1.0.0:/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] db3002513d25509675836d960662620d80da6b2a84607ceb917a166fc9200f77
[INFO] running `"docker" "start" "-a" "db3002513d25509675836d960662620d80da6b2a84607ceb917a166fc9200f77"`
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] [stderr]    Compiling scell v1.0.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `Display`
[INFO] [stderr]  --> src/checked.rs:4:27
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::fmt::{Formatter, Display, Debug, Error, Pointer};
[INFO] [stderr]   |                           ^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Pointer`
[INFO] [stderr]   --> src/lib.rs:28:50
[INFO] [stderr]    |
[INFO] [stderr] 28 | use std::fmt::{Formatter, Display, Debug, Error, Pointer};
[INFO] [stderr]    |                                                  ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.37s
[INFO] running `"docker" "inspect" "db3002513d25509675836d960662620d80da6b2a84607ceb917a166fc9200f77"`
[INFO] running `"docker" "rm" "-f" "db3002513d25509675836d960662620d80da6b2a84607ceb917a166fc9200f77"`
[INFO] [stdout] db3002513d25509675836d960662620d80da6b2a84607ceb917a166fc9200f77
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-3/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/scell/1.0.0:/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] 74f4c684d361b3d45623dfa32cb2538089f95df469dcbac2205cbca30bb2fa8a
[INFO] running `"docker" "start" "-a" "74f4c684d361b3d45623dfa32cb2538089f95df469dcbac2205cbca30bb2fa8a"`
[INFO] [stderr]    Compiling scell v1.0.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `Display`
[INFO] [stderr]  --> src/checked.rs:4:27
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::fmt::{Formatter, Display, Debug, Error, Pointer};
[INFO] [stderr]   |                           ^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Pointer`
[INFO] [stderr]   --> src/lib.rs:28:50
[INFO] [stderr]    |
[INFO] [stderr] 28 | use std::fmt::{Formatter, Display, Debug, Error, Pointer};
[INFO] [stderr]    |                                                  ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.50s
[INFO] running `"docker" "inspect" "74f4c684d361b3d45623dfa32cb2538089f95df469dcbac2205cbca30bb2fa8a"`
[INFO] running `"docker" "rm" "-f" "74f4c684d361b3d45623dfa32cb2538089f95df469dcbac2205cbca30bb2fa8a"`
[INFO] [stdout] 74f4c684d361b3d45623dfa32cb2538089f95df469dcbac2205cbca30bb2fa8a
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-3/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/scell/1.0.0:/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] 274b6a4f4ecd47b159d7e64292624ed90351d52c3e47b35d3e9c4d9e22d2fad2
[INFO] running `"docker" "start" "-a" "274b6a4f4ecd47b159d7e64292624ed90351d52c3e47b35d3e9c4d9e22d2fad2"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/scell-f5258dda74dc3358
[INFO] [stderr]    Doc-tests scell
[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] [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" "274b6a4f4ecd47b159d7e64292624ed90351d52c3e47b35d3e9c4d9e22d2fad2"`
[INFO] running `"docker" "rm" "-f" "274b6a4f4ecd47b159d7e64292624ed90351d52c3e47b35d3e9c4d9e22d2fad2"`
[INFO] [stdout] 274b6a4f4ecd47b159d7e64292624ed90351d52c3e47b35d3e9c4d9e22d2fad2