[INFO] fetching crate hanger 0.1.0...
[INFO] checking hanger-0.1.0 against master#350d0ef0ec0493e6d21cfb265cb8211a0e74d766 for pr-145342-1
[INFO] extracting crate hanger 0.1.0 into /workspace/builds/worker-7-tc1/source
[INFO] started tweaking crates.io crate hanger 0.1.0
[INFO] finished tweaking crates.io crate hanger 0.1.0
[INFO] tweaked toml for crates.io crate hanger 0.1.0 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate hanger 0.1.0 on toolchain 350d0ef0ec0493e6d21cfb265cb8211a0e74d766
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "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" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 4 packages to latest compatible versions
[INFO] [stderr]       Adding proc-macro2 v0.4.30 (available: v1.0.101)
[INFO] [stderr]       Adding quote v0.6.13 (available: v1.0.40)
[INFO] [stderr]       Adding syn v0.15.44 (available: v2.0.106)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 79a1d57b1f830c78c0fe9e78e5bb9b144e9b50a7bd1ebb8041c6fb4d95008686
[INFO] running `Command { std: "docker" "start" "-a" "79a1d57b1f830c78c0fe9e78e5bb9b144e9b50a7bd1ebb8041c6fb4d95008686", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "79a1d57b1f830c78c0fe9e78e5bb9b144e9b50a7bd1ebb8041c6fb4d95008686", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "79a1d57b1f830c78c0fe9e78e5bb9b144e9b50a7bd1ebb8041c6fb4d95008686", kill_on_drop: false }`
[INFO] [stdout] 79a1d57b1f830c78c0fe9e78e5bb9b144e9b50a7bd1ebb8041c6fb4d95008686
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c773f1ca19268fb3f79deadd8b42b0b2f797b70571e6131404d85da3b2e51a23
[INFO] running `Command { std: "docker" "start" "-a" "c773f1ca19268fb3f79deadd8b42b0b2f797b70571e6131404d85da3b2e51a23", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]     Checking unicode-xid v0.1.0
[INFO] [stderr]     Checking quote v0.6.13
[INFO] [stderr]     Checking hanger v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `b` and `eq` are never read
[INFO] [stdout]   --> src/lib.rs:46:13
[INFO] [stdout]    |
[INFO] [stdout] 45 |         Before {
[INFO] [stdout]    |         ------ fields in this variant
[INFO] [stdout] 46 |             b: before,
[INFO] [stdout]    |             ^
[INFO] [stdout] 47 |             eq: syn::Token![=],
[INFO] [stdout]    |             ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `a` and `eq` are never read
[INFO] [stdout]   --> src/lib.rs:51:13
[INFO] [stdout]    |
[INFO] [stdout] 50 |         After {
[INFO] [stdout]    |         ----- fields in this variant
[INFO] [stdout] 51 |             a: after,
[INFO] [stdout]    |             ^
[INFO] [stdout] 52 |             eq: syn::Token![=],
[INFO] [stdout]    |             ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `b` and `eq` are never read
[INFO] [stdout]   --> src/lib.rs:46:13
[INFO] [stdout]    |
[INFO] [stdout] 45 |         Before {
[INFO] [stdout]    |         ------ fields in this variant
[INFO] [stdout] 46 |             b: before,
[INFO] [stdout]    |             ^
[INFO] [stdout] 47 |             eq: syn::Token![=],
[INFO] [stdout]    |             ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `a` and `eq` are never read
[INFO] [stdout]   --> src/lib.rs:51:13
[INFO] [stdout]    |
[INFO] [stdout] 50 |         After {
[INFO] [stdout]    |         ----- fields in this variant
[INFO] [stdout] 51 |             a: after,
[INFO] [stdout]    |             ^
[INFO] [stdout] 52 |             eq: syn::Token![=],
[INFO] [stdout]    |             ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `b` and `eq` are never read
[INFO] [stdout]   --> src/lib.rs:46:13
[INFO] [stdout]    |
[INFO] [stdout] 45 |         Before {
[INFO] [stdout]    |         ------ fields in this variant
[INFO] [stdout] 46 |             b: before,
[INFO] [stdout]    |             ^
[INFO] [stdout] 47 |             eq: syn::Token![=],
[INFO] [stdout]    |             ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `a` and `eq` are never read
[INFO] [stdout]   --> src/lib.rs:51:13
[INFO] [stdout]    |
[INFO] [stdout] 50 |         After {
[INFO] [stdout]    |         ----- fields in this variant
[INFO] [stdout] 51 |             a: after,
[INFO] [stdout]    |             ^
[INFO] [stdout] 52 |             eq: syn::Token![=],
[INFO] [stdout]    |             ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.27s
[INFO] running `Command { std: "docker" "inspect" "c773f1ca19268fb3f79deadd8b42b0b2f797b70571e6131404d85da3b2e51a23", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c773f1ca19268fb3f79deadd8b42b0b2f797b70571e6131404d85da3b2e51a23", kill_on_drop: false }`
[INFO] [stdout] c773f1ca19268fb3f79deadd8b42b0b2f797b70571e6131404d85da3b2e51a23