[INFO] fetching crate emcell-macro 0.0.3...
[INFO] checking emcell-macro-0.0.3 against master#cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c for pr-143170
[INFO] extracting crate emcell-macro 0.0.3 into /workspace/builds/worker-2-tc1/source
[INFO] started tweaking crates.io crate emcell-macro 0.0.3
[INFO] finished tweaking crates.io crate emcell-macro 0.0.3
[INFO] tweaked toml for crates.io crate emcell-macro 0.0.3 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate emcell-macro 0.0.3 on toolchain cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "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" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 14 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ee08143d23b2861ae0c9c01c6fb588eef8daedd919d971dcc895cd80aa96cb6c
[INFO] running `Command { std: "docker" "start" "-a" "ee08143d23b2861ae0c9c01c6fb588eef8daedd919d971dcc895cd80aa96cb6c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ee08143d23b2861ae0c9c01c6fb588eef8daedd919d971dcc895cd80aa96cb6c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ee08143d23b2861ae0c9c01c6fb588eef8daedd919d971dcc895cd80aa96cb6c", kill_on_drop: false }`
[INFO] [stdout] ee08143d23b2861ae0c9c01c6fb588eef8daedd919d971dcc895cd80aa96cb6c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] dd9ce8c539e224432ecec14fd5cad5132ea78fd86e18300c149076d7d9be3826
[INFO] running `Command { std: "docker" "start" "-a" "dd9ce8c539e224432ecec14fd5cad5132ea78fd86e18300c149076d7d9be3826", kill_on_drop: false }`
[INFO] [stderr]    Compiling typenum v1.18.0
[INFO] [stderr]     Checking cfg-if v1.0.1
[INFO] [stderr]     Checking cpufeatures v0.2.17
[INFO] [stderr]    Compiling generic-array v0.14.7
[INFO] [stderr]     Checking syn v2.0.104
[INFO] [stderr]     Checking crypto-common v0.1.6
[INFO] [stderr]     Checking block-buffer v0.10.4
[INFO] [stderr]     Checking digest v0.10.7
[INFO] [stderr]     Checking sha2 v0.10.9
[INFO] [stderr]     Checking emcell-macro v0.0.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Visibility`
[INFO] [stdout]  --> src/defs.rs:5:160
[INFO] [stdout]   |
[INFO] [stdout] 5 | ..., Member, Meta, parse2, parse_macro_input, parse_quote, Type, Visibility};
[INFO] [stdout]   |                                                                  ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Visibility`
[INFO] [stdout]  --> src/defs.rs:5:160
[INFO] [stdout]   |
[INFO] [stdout] 5 | ..., Member, Meta, parse2, parse_macro_input, parse_quote, Type, Visibility};
[INFO] [stdout]   |                                                                  ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/defs.rs:440:9
[INFO] [stdout]     |
[INFO] [stdout] 440 |     let mut fields = match &mut header_struct.data {
[INFO] [stdout]     |         ----^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/defs.rs:440:9
[INFO] [stdout]     |
[INFO] [stdout] 440 |     let mut fields = match &mut header_struct.data {
[INFO] [stdout]     |         ----^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.47s
[INFO] running `Command { std: "docker" "inspect" "dd9ce8c539e224432ecec14fd5cad5132ea78fd86e18300c149076d7d9be3826", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dd9ce8c539e224432ecec14fd5cad5132ea78fd86e18300c149076d7d9be3826", kill_on_drop: false }`
[INFO] [stdout] dd9ce8c539e224432ecec14fd5cad5132ea78fd86e18300c149076d7d9be3826