[INFO] updating cached repository https://github.com/Gopiandcode/observable-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune", kill_on_drop: false }`
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f30920c76c5e15904055c5a736b23b817e998a50
[INFO] testing Gopiandcode/observable-rs against 1.45.2 for beta-1.46-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FGopiandcode%2Fobservable-rs" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Gopiandcode/observable-rs on toolchain 1.45.2
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.45.2" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Gopiandcode/observable-rs
[INFO] finished tweaking git repo https://github.com/Gopiandcode/observable-rs
[INFO] tweaked toml for git repo https://github.com/Gopiandcode/observable-rs written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/Gopiandcode/observable-rs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.45.2" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] error: the lock file /workspace/builds/worker-0/source/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] [stderr] If you want to try to generate the lock file without accessing the network, use the --offline flag.
[INFO] the lockfile is outdated, regenerating it
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.45.2" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.45.2" "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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+1.45.2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6ed5e97213397ce4e376c20e7a18caaf161808934df997a194c70b93cbb53527
[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" "6ed5e97213397ce4e376c20e7a18caaf161808934df997a194c70b93cbb53527", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6ed5e97213397ce4e376c20e7a18caaf161808934df997a194c70b93cbb53527", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6ed5e97213397ce4e376c20e7a18caaf161808934df997a194c70b93cbb53527", kill_on_drop: false }`
[INFO] [stdout] 6ed5e97213397ce4e376c20e7a18caaf161808934df997a194c70b93cbb53527
[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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+1.45.2" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a7f7b5cd4da4ac5eaab53cc1941d3cd7f652df2f51994d0b35bc99ba7b8efe79
[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" "a7f7b5cd4da4ac5eaab53cc1941d3cd7f652df2f51994d0b35bc99ba7b8efe79", kill_on_drop: false }`
[INFO] [stderr]    Compiling observable_rs v0.5.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Rc`
[INFO] [stdout]  --> src/lib.rs:5:21
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::rc::{Weak, Rc};
[INFO] [stdout]   |                     ^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `AsRef`
[INFO] [stdout]  --> src/lib.rs:6:20
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::convert::{AsRef, AsMut};
[INFO] [stdout]   |                    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:14:43
[INFO] [stdout]    |
[INFO] [stdout] 14 |     fn register(&mut self, observer: Weak<Observer<M>>);
[INFO] [stdout]    |                                           ^^^^^^^^^^^ help: use `dyn`: `dyn Observer<M>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:32:25
[INFO] [stdout]    |
[INFO] [stdout] 32 |     observers: Vec<Weak<Observer<M>>>
[INFO] [stdout]    |                         ^^^^^^^^^^^ help: use `dyn`: `dyn Observer<M>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:44:43
[INFO] [stdout]    |
[INFO] [stdout] 44 |     fn register(&mut self, observer: Weak<Observer<M>>) {
[INFO] [stdout]    |                                           ^^^^^^^^^^^ help: use `dyn`: `dyn Observer<M>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.51s
[INFO] running `Command { std: "docker" "inspect" "a7f7b5cd4da4ac5eaab53cc1941d3cd7f652df2f51994d0b35bc99ba7b8efe79", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a7f7b5cd4da4ac5eaab53cc1941d3cd7f652df2f51994d0b35bc99ba7b8efe79", kill_on_drop: false }`
[INFO] [stdout] a7f7b5cd4da4ac5eaab53cc1941d3cd7f652df2f51994d0b35bc99ba7b8efe79
[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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+1.45.2" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d7f354b65695ae83f093788f0e08255ab5543e556337adeee4e097e6256444bc
[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" "d7f354b65695ae83f093788f0e08255ab5543e556337adeee4e097e6256444bc", kill_on_drop: false }`
[INFO] [stdout] warning: unused import: `Rc`
[INFO] [stdout]  --> src/lib.rs:5:21
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::rc::{Weak, Rc};
[INFO] [stdout]   |                     ^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `AsRef`
[INFO] [stdout]  --> src/lib.rs:6:20
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::convert::{AsRef, AsMut};
[INFO] [stdout]   |                    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling observable_rs v0.5.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:14:43
[INFO] [stdout]    |
[INFO] [stdout] 14 |     fn register(&mut self, observer: Weak<Observer<M>>);
[INFO] [stdout]    |                                           ^^^^^^^^^^^ help: use `dyn`: `dyn Observer<M>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:32:25
[INFO] [stdout]    |
[INFO] [stdout] 32 |     observers: Vec<Weak<Observer<M>>>
[INFO] [stdout]    |                         ^^^^^^^^^^^ help: use `dyn`: `dyn Observer<M>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:44:43
[INFO] [stdout]    |
[INFO] [stdout] 44 |     fn register(&mut self, observer: Weak<Observer<M>>) {
[INFO] [stdout]    |                                           ^^^^^^^^^^^ help: use `dyn`: `dyn Observer<M>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Rc`
[INFO] [stdout]  --> src/lib.rs:5:21
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::rc::{Weak, Rc};
[INFO] [stdout]   |                     ^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `AsRef`
[INFO] [stdout]  --> src/lib.rs:6:20
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::convert::{AsRef, AsMut};
[INFO] [stdout]   |                    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:14:43
[INFO] [stdout]    |
[INFO] [stdout] 14 |     fn register(&mut self, observer: Weak<Observer<M>>);
[INFO] [stdout]    |                                           ^^^^^^^^^^^ help: use `dyn`: `dyn Observer<M>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:32:25
[INFO] [stdout]    |
[INFO] [stdout] 32 |     observers: Vec<Weak<Observer<M>>>
[INFO] [stdout]    |                         ^^^^^^^^^^^ help: use `dyn`: `dyn Observer<M>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:44:43
[INFO] [stdout]    |
[INFO] [stdout] 44 |     fn register(&mut self, observer: Weak<Observer<M>>) {
[INFO] [stdout]    |                                           ^^^^^^^^^^^ help: use `dyn`: `dyn Observer<M>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.82s
[INFO] running `Command { std: "docker" "inspect" "d7f354b65695ae83f093788f0e08255ab5543e556337adeee4e097e6256444bc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d7f354b65695ae83f093788f0e08255ab5543e556337adeee4e097e6256444bc", kill_on_drop: false }`
[INFO] [stdout] d7f354b65695ae83f093788f0e08255ab5543e556337adeee4e097e6256444bc
[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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+1.45.2" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] f2c5e3cbf416f96dcd1461ca48b4074867098be6c94052e795ad6816a6032631
[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" "f2c5e3cbf416f96dcd1461ca48b4074867098be6c94052e795ad6816a6032631", kill_on_drop: false }`
[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] warning: 5 warnings emitted
[INFO] [stderr] 
[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] warning: 5 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.11s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/observable_rs-677086b28bbfbacb
[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 `Command { std: "docker" "inspect" "f2c5e3cbf416f96dcd1461ca48b4074867098be6c94052e795ad6816a6032631", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f2c5e3cbf416f96dcd1461ca48b4074867098be6c94052e795ad6816a6032631", kill_on_drop: false }`
[INFO] [stdout] f2c5e3cbf416f96dcd1461ca48b4074867098be6c94052e795ad6816a6032631