[INFO] crate ice-threads 0.1.0 is already in cache
[INFO] extracting crate ice-threads 0.1.0 into work/ex/beta-1.38-1/sources/1.37.0/reg/ice-threads/0.1.0
[INFO] extracting crate ice-threads 0.1.0 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/ice-threads/0.1.0
[INFO] validating manifest of ice-threads-0.1.0 on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of ice-threads-0.1.0 on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing ice-threads-0.1.0
[INFO] finished frobbing ice-threads-0.1.0
[INFO] frobbed toml for ice-threads-0.1.0 written to work/ex/beta-1.38-1/sources/1.37.0/reg/ice-threads/0.1.0/Cargo.toml
[INFO] started frobbing ice-threads-0.1.0
[INFO] finished frobbing ice-threads-0.1.0
[INFO] frobbed toml for ice-threads-0.1.0 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/ice-threads/0.1.0/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "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" "+beta-2019-08-13" "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" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] testing ice-threads-0.1.0 against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/ice-threads/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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] ddc17e81b2017efa595e773e0833b968cde8d686f80540cfa9136a68bf3397c2
[INFO] running `"docker" "start" "-a" "ddc17e81b2017efa595e773e0833b968cde8d686f80540cfa9136a68bf3397c2"`
[INFO] [stderr]    Compiling ice-threads v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/ice.rs:5:27
[INFO] [stderr]   |
[INFO] [stderr] 5 | pub(crate) struct Ice(Box<Meltable + Send + 'static>);
[INFO] [stderr]   |                           ^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Meltable + Send + 'static`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.89s
[INFO] running `"docker" "inspect" "ddc17e81b2017efa595e773e0833b968cde8d686f80540cfa9136a68bf3397c2"`
[INFO] running `"docker" "rm" "-f" "ddc17e81b2017efa595e773e0833b968cde8d686f80540cfa9136a68bf3397c2"`
[INFO] [stdout] ddc17e81b2017efa595e773e0833b968cde8d686f80540cfa9136a68bf3397c2
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/ice-threads/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" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] a89cc4c5a30a83edcb05d80eac0db239ca292cea949ce86ce10b8992aed2900e
[INFO] running `"docker" "start" "-a" "a89cc4c5a30a83edcb05d80eac0db239ca292cea949ce86ce10b8992aed2900e"`
[INFO] [stderr]    Compiling ice-threads v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/ice.rs:5:27
[INFO] [stderr]   |
[INFO] [stderr] 5 | pub(crate) struct Ice(Box<Meltable + Send + 'static>);
[INFO] [stderr]   |                           ^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Meltable + Send + 'static`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.44s
[INFO] running `"docker" "inspect" "a89cc4c5a30a83edcb05d80eac0db239ca292cea949ce86ce10b8992aed2900e"`
[INFO] running `"docker" "rm" "-f" "a89cc4c5a30a83edcb05d80eac0db239ca292cea949ce86ce10b8992aed2900e"`
[INFO] [stdout] a89cc4c5a30a83edcb05d80eac0db239ca292cea949ce86ce10b8992aed2900e
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/ice-threads/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" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] 8a76a26a89a81485e074d5238acacfb29088d38fda2d5c91c332f4b8ff36787e
[INFO] running `"docker" "start" "-a" "8a76a26a89a81485e074d5238acacfb29088d38fda2d5c91c332f4b8ff36787e"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/ice_threads-3733ad5ce30f3b13
[INFO] [stderr]    Doc-tests ice-threads
[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 3 tests
[INFO] [stdout] test src/lib.rs -  (line 26) ... ok
[INFO] [stdout] test src/lib.rs -  (line 41) ... ok
[INFO] [stdout] test src/lib.rs -  (line 66) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "8a76a26a89a81485e074d5238acacfb29088d38fda2d5c91c332f4b8ff36787e"`
[INFO] running `"docker" "rm" "-f" "8a76a26a89a81485e074d5238acacfb29088d38fda2d5c91c332f4b8ff36787e"`
[INFO] [stdout] 8a76a26a89a81485e074d5238acacfb29088d38fda2d5c91c332f4b8ff36787e