[INFO] cloning repository https://github.com/SimowTopos/fri_basic_rustling
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/SimowTopos/fri_basic_rustling" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSimowTopos%2Ffri_basic_rustling", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSimowTopos%2Ffri_basic_rustling'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d5666d369828f4ade211d38c7b520a3ead6f3be4
[INFO] checking SimowTopos/fri_basic_rustling against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSimowTopos%2Ffri_basic_rustling" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/SimowTopos/fri_basic_rustling
[INFO] finished tweaking git repo https://github.com/SimowTopos/fri_basic_rustling
[INFO] tweaked toml for git repo https://github.com/SimowTopos/fri_basic_rustling written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/SimowTopos/fri_basic_rustling on toolchain 4f260f0f20b3133d20cfb50353c0221943af5796
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/SimowTopos/fri_basic_rustling already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "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-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3881b9ebdd3f442026f18d68c31327cb7fe2e03d6c78d2f099214b3139b47b72
[INFO] running `Command { std: "docker" "start" "-a" "3881b9ebdd3f442026f18d68c31327cb7fe2e03d6c78d2f099214b3139b47b72", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3881b9ebdd3f442026f18d68c31327cb7fe2e03d6c78d2f099214b3139b47b72", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3881b9ebdd3f442026f18d68c31327cb7fe2e03d6c78d2f099214b3139b47b72", kill_on_drop: false }`
[INFO] [stdout] 3881b9ebdd3f442026f18d68c31327cb7fe2e03d6c78d2f099214b3139b47b72
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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 -Dunmustuse_in_always_ok" "-e" "RUSTDOCFLAGS=--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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0f9f0973bfacab695927b589f91826c871189e976692c6df99a0c3a99404e698
[INFO] running `Command { std: "docker" "start" "-a" "0f9f0973bfacab695927b589f91826c871189e976692c6df99a0c3a99404e698", kill_on_drop: false }`
[INFO] [stderr]    Compiling quote v1.0.37
[INFO] [stderr]    Compiling libc v0.2.158
[INFO] [stderr]    Compiling radium v0.7.0
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling num-bigint v0.3.3
[INFO] [stderr]     Checking tap v1.0.1
[INFO] [stderr]     Checking funty v2.0.0
[INFO] [stderr]     Checking cpufeatures v0.2.13
[INFO] [stderr]     Checking sha2 v0.10.8
[INFO] [stderr]     Checking wyz v0.5.1
[INFO] [stderr]    Compiling syn v2.0.77
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking bitvec v1.0.1
[INFO] [stderr]     Checking rs_merkle v1.4.2
[INFO] [stderr]     Checking getrandom v0.2.15
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]    Compiling num-integer v0.1.46
[INFO] [stderr]    Compiling zerocopy-derive v0.7.35
[INFO] [stderr]    Compiling addchain v0.2.0
[INFO] [stderr]     Checking zerocopy v0.7.35
[INFO] [stderr]     Checking ppv-lite86 v0.2.20
[INFO] [stderr]    Compiling ff_derive v0.13.0
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking ff v0.13.0
[INFO] [stderr]     Checking fri_basic_rustling v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<&[u8], Infallible>
[INFO] [stdout]   --> src/main.rs:43:17
[INFO] [stdout]    |
[INFO] [stdout] 43 | /                 d.layers_evaluations[i]
[INFO] [stdout] 44 | |                     .to_repr()
[INFO] [stdout] 45 | |                     .as_ref()
[INFO] [stdout] 46 | |                     .try_into()
[INFO] [stdout]    | |_______________________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<&[u8], Infallible>
[INFO] [stdout]   --> src/fri_code_layer.rs:52:17
[INFO] [stdout]    |
[INFO] [stdout] 52 | /                 x.to_repr()
[INFO] [stdout] 53 | |                     .as_ref()
[INFO] [stdout] 54 | |                     .try_into()
[INFO] [stdout]    | |_______________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `fri_basic_rustling` (bin "fri_basic_rustling") due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: this type will no longer be must used: Result<&[u8], Infallible>
[INFO] [stdout]   --> src/main.rs:43:17
[INFO] [stdout]    |
[INFO] [stdout] 43 | /                 d.layers_evaluations[i]
[INFO] [stdout] 44 | |                     .to_repr()
[INFO] [stdout] 45 | |                     .as_ref()
[INFO] [stdout] 46 | |                     .try_into()
[INFO] [stdout]    | |_______________________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<&[u8], Infallible>
[INFO] [stdout]   --> src/fri_code_layer.rs:52:17
[INFO] [stdout]    |
[INFO] [stdout] 52 | /                 x.to_repr()
[INFO] [stdout] 53 | |                     .as_ref()
[INFO] [stdout] 54 | |                     .try_into()
[INFO] [stdout]    | |_______________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<&[u8], Infallible>
[INFO] [stdout]    --> src/fri_code_layer.rs:394:21
[INFO] [stdout]     |
[INFO] [stdout] 394 | /                     d.layers_evaluations[i]
[INFO] [stdout] 395 | |                         .to_repr()
[INFO] [stdout] 396 | |                         .as_ref()
[INFO] [stdout] 397 | |                         .try_into()
[INFO] [stdout]     | |___________________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `fri_basic_rustling` (bin "fri_basic_rustling" test) due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "0f9f0973bfacab695927b589f91826c871189e976692c6df99a0c3a99404e698", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0f9f0973bfacab695927b589f91826c871189e976692c6df99a0c3a99404e698", kill_on_drop: false }`
[INFO] [stdout] 0f9f0973bfacab695927b589f91826c871189e976692c6df99a0c3a99404e698
