[INFO] fetching crate const_strum 0.1.1...
[INFO] checking const_strum-0.1.1 against try#1463461488056994d1b84e8b752e7c11c7fae7aa for pr-154205
[INFO] extracting crate const_strum 0.1.1 into /workspace/builds/worker-3-tc2/source
[INFO] started tweaking crates.io crate const_strum 0.1.1
[INFO] finished tweaking crates.io crate const_strum 0.1.1
[INFO] tweaked toml for crates.io crate const_strum 0.1.1 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate const_strum 0.1.1 on toolchain 1463461488056994d1b84e8b752e7c11c7fae7aa
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1463461488056994d1b84e8b752e7c11c7fae7aa" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1463461488056994d1b84e8b752e7c11c7fae7aa" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 4 packages to latest compatible versions
[INFO] [stderr]       Adding syn v1.0.109 (available: v2.0.117)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1463461488056994d1b84e8b752e7c11c7fae7aa" "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-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1463461488056994d1b84e8b752e7c11c7fae7aa" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fa648d1b0e464492ba445c171c4296e1ce356d03bba9d45c9ff6d71e68228b79
[INFO] running `Command { std: "docker" "start" "-a" "fa648d1b0e464492ba445c171c4296e1ce356d03bba9d45c9ff6d71e68228b79", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fa648d1b0e464492ba445c171c4296e1ce356d03bba9d45c9ff6d71e68228b79", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fa648d1b0e464492ba445c171c4296e1ce356d03bba9d45c9ff6d71e68228b79", kill_on_drop: false }`
[INFO] [stdout] fa648d1b0e464492ba445c171c4296e1ce356d03bba9d45c9ff6d71e68228b79
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1463461488056994d1b84e8b752e7c11c7fae7aa" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9f7001dd6026a313942700f1dc34a1136d210ea8e28da312a4f3fd0682d466ad
[INFO] running `Command { std: "docker" "start" "-a" "9f7001dd6026a313942700f1dc34a1136d210ea8e28da312a4f3fd0682d466ad", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.106
[INFO] [stderr]    Compiling quote v1.0.45
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking const_strum v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr] [FMTARGS] {"crate":"const_strum","p":1,"ph":0,"wa":0,"pa":0,"a":0,"pos":0,"named":0,"cap":0,"ucap":0,"dup":0,"const":0,"constparam":0,"other_dup":0,"d2":0,"d3":0,"d4p":0,"deduped":0,"remaining":0,"a_old":0,"a_opt":0,"sz_no_dedup":0,"sz_old":0,"sz_opt":0}
[INFO] [stderr] [FMTARGS] {"crate":"const_strum","p":1,"ph":0,"wa":0,"pa":0,"a":0,"pos":0,"named":0,"cap":0,"ucap":0,"dup":0,"const":0,"constparam":0,"other_dup":0,"d2":0,"d3":0,"d4p":0,"deduped":0,"remaining":0,"a_old":0,"a_opt":0,"sz_no_dedup":0,"sz_old":0,"sz_opt":0}
[INFO] [stderr] [FMTARGS] {"crate":"const_strum","p":1,"ph":0,"wa":0,"pa":0,"a":0,"pos":0,"named":0,"cap":0,"ucap":0,"dup":0,"const":0,"constparam":0,"other_dup":0,"d2":0,"d3":0,"d4p":0,"deduped":0,"remaining":0,"a_old":0,"a_opt":0,"sz_no_dedup":0,"sz_old":0,"sz_opt":0}
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]  --> tests/test.rs:8:14
[INFO] [stdout]   |
[INFO] [stdout] 8 |         Var2(u32),
[INFO] [stdout]   |         ---- ^^^
[INFO] [stdout]   |         |
[INFO] [stdout]   |         field in this variant
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]   |
[INFO] [stdout] 8 -         Var2(u32),
[INFO] [stdout] 8 +         Var2(()),
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `a` and `b` are never read
[INFO] [stdout]  --> tests/test.rs:9:16
[INFO] [stdout]   |
[INFO] [stdout] 9 |         Var3 { a: u32, b: u32 },
[INFO] [stdout]   |         ----   ^       ^
[INFO] [stdout]   |         |
[INFO] [stdout]   |         fields in this variant
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.37s
[INFO] running `Command { std: "docker" "inspect" "9f7001dd6026a313942700f1dc34a1136d210ea8e28da312a4f3fd0682d466ad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9f7001dd6026a313942700f1dc34a1136d210ea8e28da312a4f3fd0682d466ad", kill_on_drop: false }`
[INFO] [stdout] 9f7001dd6026a313942700f1dc34a1136d210ea8e28da312a4f3fd0682d466ad