[INFO] cloning repository https://github.com/parrottq/tworld
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/parrottq/tworld" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fparrottq%2Ftworld", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fparrottq%2Ftworld'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] adf9f959c37573b18914e8885e1fdaf9e655017e
[INFO] checking parrottq/tworld against master#36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923 for pr-81863
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fparrottq%2Ftworld" "/workspace/builds/worker-10/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-10/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/parrottq/tworld on toolchain 36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/parrottq/tworld
[INFO] finished tweaking git repo https://github.com/parrottq/tworld
[INFO] tweaked toml for git repo https://github.com/parrottq/tworld written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate git repo https://github.com/parrottq/tworld already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "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] a6e0df4c110ee738a62e1bba5a7b0cfc03890f166dbadf6aa1d1b8cce62fd138
[INFO] running `Command { std: "docker" "start" "-a" "a6e0df4c110ee738a62e1bba5a7b0cfc03890f166dbadf6aa1d1b8cce62fd138", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a6e0df4c110ee738a62e1bba5a7b0cfc03890f166dbadf6aa1d1b8cce62fd138", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a6e0df4c110ee738a62e1bba5a7b0cfc03890f166dbadf6aa1d1b8cce62fd138", kill_on_drop: false }`
[INFO] [stdout] a6e0df4c110ee738a62e1bba5a7b0cfc03890f166dbadf6aa1d1b8cce62fd138
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "rustops/crates-build-env@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3e586670503050c590452f6777f09021313e2459e408f88f8f2a81d2ace320cd
[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" "3e586670503050c590452f6777f09021313e2459e408f88f8f2a81d2ace320cd", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v0.1.4
[INFO] [stderr]    Compiling num-bigint v0.2.2
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]    Compiling num-iter v0.1.39
[INFO] [stderr]    Compiling num-complex v0.2.3
[INFO] [stderr]    Compiling num-rational v0.2.2
[INFO] [stderr]     Checking num v0.2.0
[INFO] [stderr]     Checking tworld v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/parsing.rs:120:22
[INFO] [stdout]     |
[INFO] [stdout] 120 |         reader: &mut FnMut(&mut Self) -> T,
[INFO] [stdout]     |                      ^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(&mut Self) -> T`
[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/parsing.rs:120:22
[INFO] [stdout]     |
[INFO] [stdout] 120 |         reader: &mut FnMut(&mut Self) -> T,
[INFO] [stdout]     |                      ^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(&mut Self) -> T`
[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/parsing.rs:121:21
[INFO] [stdout]     |
[INFO] [stdout] 121 |         sizer: &mut FnMut(&mut Self) -> G,
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(&mut Self) -> G`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/writing.rs:18:22
[INFO] [stdout]    |
[INFO] [stdout] 18 |         writer: &mut FnMut(&mut Self, T),
[INFO] [stdout]    |                      ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(&mut Self, T)`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/writing.rs:19:23
[INFO] [stdout]    |
[INFO] [stdout] 19 |         counter: &mut FnMut(&mut Self, G),
[INFO] [stdout]    |                       ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(&mut Self, G)`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/writing.rs:62:22
[INFO] [stdout]    |
[INFO] [stdout] 62 |         writer: &mut FnMut(&mut Self, T),
[INFO] [stdout]    |                      ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(&mut Self, T)`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/writing.rs:63:23
[INFO] [stdout]    |
[INFO] [stdout] 63 |         counter: &mut FnMut(&mut Self, G),
[INFO] [stdout]    |                       ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(&mut Self, G)`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/parsing.rs:121:21
[INFO] [stdout]     |
[INFO] [stdout] 121 |         sizer: &mut FnMut(&mut Self) -> G,
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(&mut Self) -> G`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/writing.rs:18:22
[INFO] [stdout]    |
[INFO] [stdout] 18 |         writer: &mut FnMut(&mut Self, T),
[INFO] [stdout]    |                      ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(&mut Self, T)`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/writing.rs:19:23
[INFO] [stdout]    |
[INFO] [stdout] 19 |         counter: &mut FnMut(&mut Self, G),
[INFO] [stdout]    |                       ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(&mut Self, G)`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/writing.rs:62:22
[INFO] [stdout]    |
[INFO] [stdout] 62 |         writer: &mut FnMut(&mut Self, T),
[INFO] [stdout]    |                      ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(&mut Self, T)`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/writing.rs:63:23
[INFO] [stdout]    |
[INFO] [stdout] 63 |         counter: &mut FnMut(&mut Self, G),
[INFO] [stdout]    |                       ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(&mut Self, G)`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.02s
[INFO] running `Command { std: "docker" "inspect" "3e586670503050c590452f6777f09021313e2459e408f88f8f2a81d2ace320cd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3e586670503050c590452f6777f09021313e2459e408f88f8f2a81d2ace320cd", kill_on_drop: false }`
[INFO] [stdout] 3e586670503050c590452f6777f09021313e2459e408f88f8f2a81d2ace320cd