[INFO] fetching crate skipchannel 2.0.1... [INFO] testing skipchannel-2.0.1 against 1.59.0 for beta-1.60-1 [INFO] extracting crate skipchannel 2.0.1 into /workspace/builds/worker-3/source [INFO] validating manifest of crates.io crate skipchannel 2.0.1 on toolchain 1.59.0 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking crates.io crate skipchannel 2.0.1 [INFO] finished tweaking crates.io crate skipchannel 2.0.1 [INFO] tweaked toml for crates.io crate skipchannel 2.0.1 written to /workspace/builds/worker-3/source/Cargo.toml [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }` [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "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" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] cdecf5a0fcc4262720c3ae550e0da9a6c6f727e3bdaba1fb0f90571ff98219f5 [INFO] running `Command { std: "docker" "start" "-a" "cdecf5a0fcc4262720c3ae550e0da9a6c6f727e3bdaba1fb0f90571ff98219f5", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "cdecf5a0fcc4262720c3ae550e0da9a6c6f727e3bdaba1fb0f90571ff98219f5", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "cdecf5a0fcc4262720c3ae550e0da9a6c6f727e3bdaba1fb0f90571ff98219f5", kill_on_drop: false }` [INFO] [stdout] cdecf5a0fcc4262720c3ae550e0da9a6c6f727e3bdaba1fb0f90571ff98219f5 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "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" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] abed24337c89700c23d4379a651c895ca6c77d9b1ebc5a9958c90a6d74aa75de [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" "abed24337c89700c23d4379a651c895ca6c77d9b1ebc5a9958c90a6d74aa75de", kill_on_drop: false }` [INFO] [stderr] Compiling skipchannel v2.0.1 (/opt/rustwide/workdir) [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 1.03s [INFO] running `Command { std: "docker" "inspect" "abed24337c89700c23d4379a651c895ca6c77d9b1ebc5a9958c90a6d74aa75de", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "abed24337c89700c23d4379a651c895ca6c77d9b1ebc5a9958c90a6d74aa75de", kill_on_drop: false }` [INFO] [stdout] abed24337c89700c23d4379a651c895ca6c77d9b1ebc5a9958c90a6d74aa75de [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "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" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] d6bae290d795bfa23b4bee8c524297e3a6f267523da08227983e49382d443f42 [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" "d6bae290d795bfa23b4bee8c524297e3a6f267523da08227983e49382d443f42", kill_on_drop: false }` [INFO] [stderr] Compiling skipchannel v2.0.1 (/opt/rustwide/workdir) [INFO] [stdout] warning: panic message is not a string literal [INFO] [stdout] --> src/lib.rs:105:36 [INFO] [stdout] | [INFO] [stdout] 105 | Err(err) => panic!(err), [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(non_fmt_panics)]` on by default [INFO] [stdout] = note: this usage of panic!() is deprecated; it will be a hard error in Rust 2021 [INFO] [stdout] = note: for more information, see [INFO] [stdout] help: add a "{:?}" format string to use the Debug implementation of `Box` [INFO] [stdout] | [INFO] [stdout] 105 | Err(err) => panic!("{:?}", err), [INFO] [stdout] | +++++++ [INFO] [stdout] help: or use std::panic::panic_any instead [INFO] [stdout] | [INFO] [stdout] 105 | Err(err) => std::panic::panic_any(err), [INFO] [stdout] | ~~~~~~~~~~~~~~~~~~~~~ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.87s [INFO] running `Command { std: "docker" "inspect" "d6bae290d795bfa23b4bee8c524297e3a6f267523da08227983e49382d443f42", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "d6bae290d795bfa23b4bee8c524297e3a6f267523da08227983e49382d443f42", kill_on_drop: false }` [INFO] [stdout] d6bae290d795bfa23b4bee8c524297e3a6f267523da08227983e49382d443f42 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "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" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] 8a07d6200c74688e85f9a8de4aa902429b7b97ef45e03ba8dc4cefa22ea5ec2e [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" "8a07d6200c74688e85f9a8de4aa902429b7b97ef45e03ba8dc4cefa22ea5ec2e", kill_on_drop: false }` [INFO] [stderr] warning: panic message is not a string literal [INFO] [stderr] --> src/lib.rs:105:36 [INFO] [stderr] | [INFO] [stderr] 105 | Err(err) => panic!(err), [INFO] [stderr] | ^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(non_fmt_panics)]` on by default [INFO] [stderr] = note: this usage of panic!() is deprecated; it will be a hard error in Rust 2021 [INFO] [stderr] = note: for more information, see [INFO] [stderr] help: add a "{:?}" format string to use the Debug implementation of `Box` [INFO] [stderr] | [INFO] [stderr] 105 | Err(err) => panic!("{:?}", err), [INFO] [stderr] | +++++++ [INFO] [stderr] help: or use std::panic::panic_any instead [INFO] [stderr] | [INFO] [stderr] 105 | Err(err) => std::panic::panic_any(err), [INFO] [stderr] | ~~~~~~~~~~~~~~~~~~~~~ [INFO] [stderr] [INFO] [stderr] warning: `skipchannel` (lib test) generated 1 warning [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.00s [INFO] [stderr] Running unittests (/opt/rustwide/target/debug/deps/skipchannel-85da9ebc8aeeb97c) [INFO] [stdout] [INFO] [stdout] running 9 tests [INFO] [stdout] test tests::skip_channel::allows_to_send_one_value ... ok [INFO] [stdout] test tests::skip_channel::drop::does_not_drop_values_when_just_the_receiver_is_dropped ... ok [INFO] [stdout] test tests::skip_channel::drop::does_not_drop_values_when_just_the_sender_is_dropped ... ok [INFO] [stdout] test tests::skip_channel::allows_to_send_values_between_threads ... ok [INFO] [stdout] test tests::skip_channel::drop::value_is_dropped_when_sender_and_receiver_are_dropped ... ok [INFO] [stdout] test tests::skip_channel::drop::drops_unconsumed_values_on_subsequent_sends ... ok [INFO] [stdout] test tests::skip_channel::returns_none_when_a_sent_value_is_already_consumed ... ok [INFO] [stdout] test tests::skip_channel::yields_none_when_nothing_is_sent ... ok [INFO] [stdout] test tests::skip_channel::skips_all_values_but_the_last ... ok [INFO] [stdout] [INFO] [stdout] test result: ok. 9 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s [INFO] [stdout] [INFO] [stderr] Doc-tests skipchannel [INFO] [stdout] [INFO] [stdout] running 1 test [INFO] [stdout] test src/lib.rs - (line 10) ... ok [INFO] [stdout] [INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.45s [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "8a07d6200c74688e85f9a8de4aa902429b7b97ef45e03ba8dc4cefa22ea5ec2e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "8a07d6200c74688e85f9a8de4aa902429b7b97ef45e03ba8dc4cefa22ea5ec2e", kill_on_drop: false }` [INFO] [stdout] 8a07d6200c74688e85f9a8de4aa902429b7b97ef45e03ba8dc4cefa22ea5ec2e