[INFO] cloning repository Gopiandcode/observable-rs
[INFO] running `"git" "clone" "--bare" "git://github.com/Gopiandcode/observable-rs.git" "work/cache/sources/gh/Gopiandcode/observable-rs"`
[INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/Gopiandcode/observable-rs'...
[INFO] running `"git" "clone" "work/cache/sources/gh/Gopiandcode/observable-rs" "work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/Gopiandcode/observable-rs"`
[INFO] [stderr] Cloning into 'work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/Gopiandcode/observable-rs'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/Gopiandcode/observable-rs" "work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/Gopiandcode/observable-rs"`
[INFO] [stderr] Cloning into 'work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/Gopiandcode/observable-rs'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] f30920c76c5e15904055c5a736b23b817e998a50
[INFO] sha for GitHub repo Gopiandcode/observable-rs: f30920c76c5e15904055c5a736b23b817e998a50
[INFO] validating manifest of Gopiandcode/observable-rs on toolchain master#c8865d8e195813ade6b84434ac9f8850e7112d1a
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of Gopiandcode/observable-rs on toolchain try#e212b7d492c96d3837691ba29d32d5f468933fb8
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing Gopiandcode/observable-rs
[INFO] finished frobbing Gopiandcode/observable-rs
[INFO] frobbed toml for Gopiandcode/observable-rs written to work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/Gopiandcode/observable-rs/Cargo.toml
[INFO] started frobbing Gopiandcode/observable-rs
[INFO] finished frobbing Gopiandcode/observable-rs
[INFO] frobbed toml for Gopiandcode/observable-rs written to work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/Gopiandcode/observable-rs/Cargo.toml
[INFO] crate Gopiandcode/observable-rs already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] error: the lock file /mnt/big/crater/work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/Gopiandcode/observable-rs/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] the lockfile is outdated, regenerating it
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded dependent_view v1.0.2
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing Gopiandcode/observable-rs against try#e212b7d492c96d3837691ba29d32d5f468933fb8 for pr-61629
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61629/worker-4/try#e212b7d492c96d3837691ba29d32d5f468933fb8:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/Gopiandcode/observable-rs:/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=forbid" "-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" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "build" "--frozen"`
[INFO] [stdout] a9cd8ce6ad8b9b4928f8d51b0ed3f4f045e427c44d16f479e17b376d8154d559
[INFO] running `"docker" "start" "-a" "a9cd8ce6ad8b9b4928f8d51b0ed3f4f045e427c44d16f479e17b376d8154d559"`
[INFO] [stderr]    Compiling observable_rs v0.5.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `Rc`
[INFO] [stderr]  --> src/lib.rs:5:21
[INFO] [stderr]   |
[INFO] [stderr] 5 | use std::rc::{Weak, Rc};
[INFO] [stderr]   |                     ^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `AsRef`
[INFO] [stderr]  --> src/lib.rs:6:20
[INFO] [stderr]   |
[INFO] [stderr] 6 | use std::convert::{AsRef, AsMut};
[INFO] [stderr]   |                    ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib.rs:14:43
[INFO] [stderr]    |
[INFO] [stderr] 14 |     fn register(&mut self, observer: Weak<Observer<M>>);
[INFO] [stderr]    |                                           ^^^^^^^^^^^ help: use `dyn`: `dyn Observer<M>`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib.rs:32:25
[INFO] [stderr]    |
[INFO] [stderr] 32 |     observers: Vec<Weak<Observer<M>>>
[INFO] [stderr]    |                         ^^^^^^^^^^^ help: use `dyn`: `dyn Observer<M>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib.rs:44:43
[INFO] [stderr]    |
[INFO] [stderr] 44 |     fn register(&mut self, observer: Weak<Observer<M>>) {
[INFO] [stderr]    |                                           ^^^^^^^^^^^ help: use `dyn`: `dyn Observer<M>`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.45s
[INFO] running `"docker" "inspect" "a9cd8ce6ad8b9b4928f8d51b0ed3f4f045e427c44d16f479e17b376d8154d559"`
[INFO] running `"docker" "rm" "-f" "a9cd8ce6ad8b9b4928f8d51b0ed3f4f045e427c44d16f479e17b376d8154d559"`
[INFO] [stdout] a9cd8ce6ad8b9b4928f8d51b0ed3f4f045e427c44d16f479e17b376d8154d559
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61629/worker-4/try#e212b7d492c96d3837691ba29d32d5f468933fb8:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/Gopiandcode/observable-rs:/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=forbid" "-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" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "test" "--frozen" "--no-run"`
[INFO] [stdout] 44869aaf51fd530920feaebfaf6546c0830fea14d37b14c7beecbbd083c4fe5a
[INFO] running `"docker" "start" "-a" "44869aaf51fd530920feaebfaf6546c0830fea14d37b14c7beecbbd083c4fe5a"`
[INFO] [stderr]    Compiling observable_rs v0.5.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `Rc`
[INFO] [stderr]  --> src/lib.rs:5:21
[INFO] [stderr]   |
[INFO] [stderr] 5 | use std::rc::{Weak, Rc};
[INFO] [stderr]   |                     ^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `AsRef`
[INFO] [stderr]  --> src/lib.rs:6:20
[INFO] [stderr]   |
[INFO] [stderr] 6 | use std::convert::{AsRef, AsMut};
[INFO] [stderr]   |                    ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib.rs:14:43
[INFO] [stderr]    |
[INFO] [stderr] 14 |     fn register(&mut self, observer: Weak<Observer<M>>);
[INFO] [stderr]    |                                           ^^^^^^^^^^^ help: use `dyn`: `dyn Observer<M>`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib.rs:32:25
[INFO] [stderr]    |
[INFO] [stderr] 32 |     observers: Vec<Weak<Observer<M>>>
[INFO] [stderr]    |                         ^^^^^^^^^^^ help: use `dyn`: `dyn Observer<M>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib.rs:44:43
[INFO] [stderr]    |
[INFO] [stderr] 44 |     fn register(&mut self, observer: Weak<Observer<M>>) {
[INFO] [stderr]    |                                           ^^^^^^^^^^^ help: use `dyn`: `dyn Observer<M>`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.87s
[INFO] running `"docker" "inspect" "44869aaf51fd530920feaebfaf6546c0830fea14d37b14c7beecbbd083c4fe5a"`
[INFO] running `"docker" "rm" "-f" "44869aaf51fd530920feaebfaf6546c0830fea14d37b14c7beecbbd083c4fe5a"`
[INFO] [stdout] 44869aaf51fd530920feaebfaf6546c0830fea14d37b14c7beecbbd083c4fe5a
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61629/worker-4/try#e212b7d492c96d3837691ba29d32d5f468933fb8:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/Gopiandcode/observable-rs:/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=forbid" "-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" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "test" "--frozen"`
[INFO] [stdout] 0b023306fe73bbe15e628513a7f08478fc0233af3c4a3a874a28daf3594d4d02
[INFO] running `"docker" "start" "-a" "0b023306fe73bbe15e628513a7f08478fc0233af3c4a3a874a28daf3594d4d02"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/observable_rs-06c400513856889f
[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 observable_rs
[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" "0b023306fe73bbe15e628513a7f08478fc0233af3c4a3a874a28daf3594d4d02"`
[INFO] running `"docker" "rm" "-f" "0b023306fe73bbe15e628513a7f08478fc0233af3c4a3a874a28daf3594d4d02"`
[INFO] [stdout] 0b023306fe73bbe15e628513a7f08478fc0233af3c4a3a874a28daf3594d4d02