[INFO] cloning repository https://github.com/kirjavascript/duplex
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kirjavascript/duplex" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkirjavascript%2Fduplex", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkirjavascript%2Fduplex'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5a2a4849ec0a3779a7051909c6c627c5845d3fd3
[INFO] testing kirjavascript/duplex against beta-2021-01-01 for beta-1.50-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkirjavascript%2Fduplex" "/workspace/builds/worker-14/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-14/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/kirjavascript/duplex on toolchain beta-2021-01-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/kirjavascript/duplex
[INFO] finished tweaking git repo https://github.com/kirjavascript/duplex
[INFO] tweaked toml for git repo https://github.com/kirjavascript/duplex written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate git repo https://github.com/kirjavascript/duplex already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "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] a20c3a0f6999bfe5c44e9b800ea380fb7db99c198dbf0fa5dc79f84e837bed4b
[INFO] running `Command { std: "docker" "start" "-a" "a20c3a0f6999bfe5c44e9b800ea380fb7db99c198dbf0fa5dc79f84e837bed4b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a20c3a0f6999bfe5c44e9b800ea380fb7db99c198dbf0fa5dc79f84e837bed4b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a20c3a0f6999bfe5c44e9b800ea380fb7db99c198dbf0fa5dc79f84e837bed4b", kill_on_drop: false }`
[INFO] [stdout] a20c3a0f6999bfe5c44e9b800ea380fb7db99c198dbf0fa5dc79f84e837bed4b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0d444a5de04eb6a40bffa7f813895f111965c465e8143973e5dfd981464161f6
[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" "0d444a5de04eb6a40bffa7f813895f111965c465e8143973e5dfd981464161f6", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.82
[INFO] [stderr]    Compiling memchr v2.1.1
[INFO] [stderr]    Compiling syn v0.15.23
[INFO] [stderr]    Compiling nom v4.1.1
[INFO] [stderr]    Compiling serde_derive v1.0.82
[INFO] [stderr]    Compiling serde_json v1.0.33
[INFO] [stderr]    Compiling duplex v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]    --> src/web/interop.rs:136:21
[INFO] [stdout]     |
[INFO] [stdout] 136 |     use std::sync::{ONCE_INIT, Once};
[INFO] [stdout]     |                     ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]    --> src/web/interop.rs:137:29
[INFO] [stdout]     |
[INFO] [stdout] 137 |     static SET_HOOK: Once = ONCE_INIT;
[INFO] [stdout]     |                             ^^^^^^^^^ help: replace the use of the deprecated constant: `Once::new()`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]    --> src/enumerate.rs:233:5
[INFO] [stdout]     |
[INFO] [stdout] 233 | /     std::mem::replace(sticker, match sticker {
[INFO] [stdout] 234 | |         U => U,
[INFO] [stdout] 235 | |         B => R,
[INFO] [stdout] 236 | |         R => F,
[INFO] [stdout] ...   |
[INFO] [stdout] 240 | |         D => D,
[INFO] [stdout] 241 | |     });
[INFO] [stdout]     | |_______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 34.25s
[INFO] running `Command { std: "docker" "inspect" "0d444a5de04eb6a40bffa7f813895f111965c465e8143973e5dfd981464161f6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0d444a5de04eb6a40bffa7f813895f111965c465e8143973e5dfd981464161f6", kill_on_drop: false }`
[INFO] [stdout] 0d444a5de04eb6a40bffa7f813895f111965c465e8143973e5dfd981464161f6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 884edff57347e8090a20be3d357e07d185300ef9d62c7c0ee068a801ca6e7acc
[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" "884edff57347e8090a20be3d357e07d185300ef9d62c7c0ee068a801ca6e7acc", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling duplex v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]    --> src/web/interop.rs:136:21
[INFO] [stdout]     |
[INFO] [stdout] 136 |     use std::sync::{ONCE_INIT, Once};
[INFO] [stdout]     |                     ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]    --> src/web/interop.rs:137:29
[INFO] [stdout]     |
[INFO] [stdout] 137 |     static SET_HOOK: Once = ONCE_INIT;
[INFO] [stdout]     |                             ^^^^^^^^^ help: replace the use of the deprecated constant: `Once::new()`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]    --> src/enumerate.rs:233:5
[INFO] [stdout]     |
[INFO] [stdout] 233 | /     std::mem::replace(sticker, match sticker {
[INFO] [stdout] 234 | |         U => U,
[INFO] [stdout] 235 | |         B => R,
[INFO] [stdout] 236 | |         R => F,
[INFO] [stdout] ...   |
[INFO] [stdout] 240 | |         D => D,
[INFO] [stdout] 241 | |     });
[INFO] [stdout]     | |_______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 45.66s
[INFO] running `Command { std: "docker" "inspect" "884edff57347e8090a20be3d357e07d185300ef9d62c7c0ee068a801ca6e7acc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "884edff57347e8090a20be3d357e07d185300ef9d62c7c0ee068a801ca6e7acc", kill_on_drop: false }`
[INFO] [stdout] 884edff57347e8090a20be3d357e07d185300ef9d62c7c0ee068a801ca6e7acc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] b6a0c79f5bc3bf3de1cd3e3caf4da5d459379f5d7a0f7b6c1476e05c0757956b
[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" "b6a0c79f5bc3bf3de1cd3e3caf4da5d459379f5d7a0f7b6c1476e05c0757956b", kill_on_drop: false }`
[INFO] [stderr] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stderr]    --> src/web/interop.rs:136:21
[INFO] [stderr]     |
[INFO] [stderr] 136 |     use std::sync::{ONCE_INIT, Once};
[INFO] [stderr]     |                     ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stderr]    --> src/web/interop.rs:137:29
[INFO] [stderr]     |
[INFO] [stderr] 137 |     static SET_HOOK: Once = ONCE_INIT;
[INFO] [stderr]     |                             ^^^^^^^^^ help: replace the use of the deprecated constant: `Once::new()`
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stderr]    --> src/enumerate.rs:233:5
[INFO] [stderr]     |
[INFO] [stderr] 233 | /     std::mem::replace(sticker, match sticker {
[INFO] [stderr] 234 | |         U => U,
[INFO] [stderr] 235 | |         B => R,
[INFO] [stderr] 236 | |         R => F,
[INFO] [stderr] ...   |
[INFO] [stderr] 240 | |         D => D,
[INFO] [stderr] 241 | |     });
[INFO] [stderr]     | |_______^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]     = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stderr] 
[INFO] [stderr] warning: 3 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/duplex-47b3493bf3cbdde1
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "b6a0c79f5bc3bf3de1cd3e3caf4da5d459379f5d7a0f7b6c1476e05c0757956b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b6a0c79f5bc3bf3de1cd3e3caf4da5d459379f5d7a0f7b6c1476e05c0757956b", kill_on_drop: false }`
[INFO] [stdout] b6a0c79f5bc3bf3de1cd3e3caf4da5d459379f5d7a0f7b6c1476e05c0757956b