[INFO] cloning repository https://github.com/brycefisher/lmfa0
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/brycefisher/lmfa0" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbrycefisher%2Flmfa0", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbrycefisher%2Flmfa0'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c508a2a7dee5c22927e57c99eddb644bb20b1478
[INFO] testing brycefisher/lmfa0 against master#a77da2d454e6caa227a85b16410b95f93495e7e0 for pr-91031
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbrycefisher%2Flmfa0" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/brycefisher/lmfa0 on toolchain a77da2d454e6caa227a85b16410b95f93495e7e0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/brycefisher/lmfa0
[INFO] finished tweaking git repo https://github.com/brycefisher/lmfa0
[INFO] tweaked toml for git repo https://github.com/brycefisher/lmfa0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/brycefisher/lmfa0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2309b021f2a105db868cbfdf4d6ac49f3636f02ead0114e7fee034a22ccb4095
[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" "2309b021f2a105db868cbfdf4d6ac49f3636f02ead0114e7fee034a22ccb4095", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2309b021f2a105db868cbfdf4d6ac49f3636f02ead0114e7fee034a22ccb4095", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2309b021f2a105db868cbfdf4d6ac49f3636f02ead0114e7fee034a22ccb4095", kill_on_drop: false }`
[INFO] [stdout] 2309b021f2a105db868cbfdf4d6ac49f3636f02ead0114e7fee034a22ccb4095
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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=forbid" "-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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a20cbbedf5b7fffea97858158a19ed48600668e76bf6d3829d54d8062e1923c1
[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" "a20cbbedf5b7fffea97858158a19ed48600668e76bf6d3829d54d8062e1923c1", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.9
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling syn v1.0.16
[INFO] [stderr]    Compiling smallvec v1.2.0
[INFO] [stderr]    Compiling serde v1.0.104
[INFO] [stderr]    Compiling jobserver v0.1.21
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling unicode-normalization v0.1.12
[INFO] [stderr]    Compiling cc v1.0.50
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]    Compiling idna v0.2.0
[INFO] [stderr]    Compiling libz-sys v1.0.25
[INFO] [stderr]    Compiling libgit2-sys v0.11.0+0.99.0
[INFO] [stderr]    Compiling url v2.1.1
[INFO] [stderr]    Compiling git2 v0.12.0
[INFO] [stderr]    Compiling serde_derive v1.0.104
[INFO] [stderr]    Compiling toml v0.5.6
[INFO] [stderr]    Compiling lmfa0 v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: derive helper attribute is used before it is introduced
[INFO] [stdout]   --> src/config.rs:16:3
[INFO] [stdout]    |
[INFO] [stdout] 16 | #[serde(default)]
[INFO] [stdout]    |   ^^^^^
[INFO] [stdout] 17 | #[derive(Debug, Deserialize)]
[INFO] [stdout]    |                 ----------- the attribute is introduced here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(legacy_derive_helpers)]` on by default
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = note: for more information, see issue #79202 <https://github.com/rust-lang/rust/issues/79202>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 07s
[INFO] running `Command { std: "docker" "inspect" "a20cbbedf5b7fffea97858158a19ed48600668e76bf6d3829d54d8062e1923c1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a20cbbedf5b7fffea97858158a19ed48600668e76bf6d3829d54d8062e1923c1", kill_on_drop: false }`
[INFO] [stdout] a20cbbedf5b7fffea97858158a19ed48600668e76bf6d3829d54d8062e1923c1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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=forbid" "-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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 86381662b4a5c7dcc45772a3d8b185040b4fcaddfdbdcbe12641de992bfb4cb3
[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" "86381662b4a5c7dcc45772a3d8b185040b4fcaddfdbdcbe12641de992bfb4cb3", kill_on_drop: false }`
[INFO] [stderr]    Compiling lmfa0 v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: derive helper attribute is used before it is introduced
[INFO] [stdout]   --> src/config.rs:16:3
[INFO] [stdout]    |
[INFO] [stdout] 16 | #[serde(default)]
[INFO] [stdout]    |   ^^^^^
[INFO] [stdout] 17 | #[derive(Debug, Deserialize)]
[INFO] [stdout]    |                 ----------- the attribute is introduced here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(legacy_derive_helpers)]` on by default
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = note: for more information, see issue #79202 <https://github.com/rust-lang/rust/issues/79202>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.94s
[INFO] running `Command { std: "docker" "inspect" "86381662b4a5c7dcc45772a3d8b185040b4fcaddfdbdcbe12641de992bfb4cb3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "86381662b4a5c7dcc45772a3d8b185040b4fcaddfdbdcbe12641de992bfb4cb3", kill_on_drop: false }`
[INFO] [stdout] 86381662b4a5c7dcc45772a3d8b185040b4fcaddfdbdcbe12641de992bfb4cb3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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=forbid" "-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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "test" "--frozen", 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] f7f017b4d22630d32cff739dc3474001f39e5ec0e82c8971c3dd294eb33ea546
[INFO] running `Command { std: "docker" "start" "-a" "f7f017b4d22630d32cff739dc3474001f39e5ec0e82c8971c3dd294eb33ea546", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: derive helper attribute is used before it is introduced
[INFO] [stderr]   --> src/config.rs:16:3
[INFO] [stderr]    |
[INFO] [stderr] 16 | #[serde(default)]
[INFO] [stderr]    |   ^^^^^
[INFO] [stderr] 17 | #[derive(Debug, Deserialize)]
[INFO] [stderr]    |                 ----------- the attribute is introduced here
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(legacy_derive_helpers)]` on by default
[INFO] [stderr]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stderr]    = note: for more information, see issue #79202 <https://github.com/rust-lang/rust/issues/79202>
[INFO] [stderr] 
[INFO] [stderr] warning: `lmfa0` (bin "lmfa0" test) generated 1 warning
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.54s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/lmfa0-524827f86412a2e1)
[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" "f7f017b4d22630d32cff739dc3474001f39e5ec0e82c8971c3dd294eb33ea546", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f7f017b4d22630d32cff739dc3474001f39e5ec0e82c8971c3dd294eb33ea546", kill_on_drop: false }`
[INFO] [stdout] f7f017b4d22630d32cff739dc3474001f39e5ec0e82c8971c3dd294eb33ea546