[INFO] cloning repository https://github.com/remysucre/sep
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/remysucre/sep" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fremysucre%2Fsep", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fremysucre%2Fsep'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6b86d21899a0b0c53e9262edeca5f5d4192d7c66
[INFO] checking remysucre/sep 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%2Fremysucre%2Fsep" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/remysucre/sep
[INFO] finished tweaking git repo https://github.com/remysucre/sep
[INFO] tweaked toml for git repo https://github.com/remysucre/sep written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/remysucre/sep 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/remysucre/sep 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 6df72c19fd979b128e6be12a9060266a8bfb17b2bf8163fe6eb103d3377675c1
[INFO] running `Command { std: "docker" "start" "-a" "6df72c19fd979b128e6be12a9060266a8bfb17b2bf8163fe6eb103d3377675c1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6df72c19fd979b128e6be12a9060266a8bfb17b2bf8163fe6eb103d3377675c1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6df72c19fd979b128e6be12a9060266a8bfb17b2bf8163fe6eb103d3377675c1", kill_on_drop: false }`
[INFO] [stdout] 6df72c19fd979b128e6be12a9060266a8bfb17b2bf8163fe6eb103d3377675c1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 9f6680aa4251c994487c63ff21c7e59f5a3292210f66fa7748690aea1b209056
[INFO] running `Command { std: "docker" "start" "-a" "9f6680aa4251c994487c63ff21c7e59f5a3292210f66fa7748690aea1b209056", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.4.0
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling libc v0.2.94
[INFO] [stderr]    Compiling indexmap v1.6.2
[INFO] [stderr]     Checking hashbrown v0.9.1
[INFO] [stderr]     Checking quick-error v1.2.3
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]     Checking termcolor v1.1.2
[INFO] [stderr]     Checking symbolic_expressions v5.0.3
[INFO] [stderr]     Checking smallvec v1.6.1
[INFO] [stderr]     Checking once_cell v1.7.2
[INFO] [stderr]     Checking instant v0.1.9
[INFO] [stderr]     Checking humantime v1.3.0
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking egg v0.6.0
[INFO] [stderr]     Checking regex v1.5.3
[INFO] [stderr]     Checking env_logger v0.7.1
[INFO] [stderr]     Checking csr v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<egg::Symbol, Infallible>
[INFO] [stdout]   --> src/lib.rs:3:1
[INFO] [stdout]    |
[INFO] [stdout]  3 | / define_language! {
[INFO] [stdout]  4 | |     pub enum CSr {
[INFO] [stdout]  5 | |         // binary ops
[INFO] [stdout]  6 | |         "+" = Add([Id; 2]),
[INFO] [stdout] ...  |
[INFO] [stdout] 19 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout]    = note: this error originates in the macro `$crate::__define_language` which comes from the expansion of the macro `define_language` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<egg::Symbol, Infallible>
[INFO] [stdout]   --> src/lib.rs:3:1
[INFO] [stdout]    |
[INFO] [stdout]  3 | / define_language! {
[INFO] [stdout]  4 | |     pub enum CSr {
[INFO] [stdout]  5 | |         // binary ops
[INFO] [stdout]  6 | |         "+" = Add([Id; 2]),
[INFO] [stdout] ...  |
[INFO] [stdout] 19 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this error originates in the macro `$crate::__define_language` which comes from the expansion of the macro `define_language` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `csr` (lib) 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<egg::Symbol, Infallible>
[INFO] [stdout]   --> src/lib.rs:3:1
[INFO] [stdout]    |
[INFO] [stdout]  3 | / define_language! {
[INFO] [stdout]  4 | |     pub enum CSr {
[INFO] [stdout]  5 | |         // binary ops
[INFO] [stdout]  6 | |         "+" = Add([Id; 2]),
[INFO] [stdout] ...  |
[INFO] [stdout] 19 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout]    = note: this error originates in the macro `$crate::__define_language` which comes from the expansion of the macro `define_language` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<egg::Symbol, Infallible>
[INFO] [stdout]   --> src/lib.rs:3:1
[INFO] [stdout]    |
[INFO] [stdout]  3 | / define_language! {
[INFO] [stdout]  4 | |     pub enum CSr {
[INFO] [stdout]  5 | |         // binary ops
[INFO] [stdout]  6 | |         "+" = Add([Id; 2]),
[INFO] [stdout] ...  |
[INFO] [stdout] 19 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this error originates in the macro `$crate::__define_language` which comes from the expansion of the macro `define_language` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `csr` (lib test) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "9f6680aa4251c994487c63ff21c7e59f5a3292210f66fa7748690aea1b209056", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9f6680aa4251c994487c63ff21c7e59f5a3292210f66fa7748690aea1b209056", kill_on_drop: false }`
[INFO] [stdout] 9f6680aa4251c994487c63ff21c7e59f5a3292210f66fa7748690aea1b209056