[INFO] fetching crate otter-support 1.2.1...
[INFO] checking otter-support-1.2.1 against master#8202d110516c6bd87cee375e9a9b774db499015c for pr-149596
[INFO] extracting crate otter-support 1.2.1 into /workspace/builds/worker-6-tc1/source
[INFO] started tweaking crates.io crate otter-support 1.2.1
[INFO] finished tweaking crates.io crate otter-support 1.2.1
[INFO] tweaked toml for crates.io crate otter-support 1.2.1 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate otter-support 1.2.1 on toolchain 8202d110516c6bd87cee375e9a9b774db499015c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8202d110516c6bd87cee375e9a9b774db499015c" "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" "+8202d110516c6bd87cee375e9a9b774db499015c" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 191 packages to latest compatible versions
[INFO] [stderr]       Adding chrono-tz v0.6.3 (available: v0.10.4)
[INFO] [stderr]       Adding console v0.15.11 (available: v0.16.1)
[INFO] [stderr]       Adding educe v0.4.23 (available: v0.6.0)
[INFO] [stderr]       Adding flexi_logger v0.22.6 (available: v0.31.7)
[INFO] [stderr]       Adding generic-array v0.14.7 (available: v0.14.9)
[INFO] [stderr]       Adding mio v0.8.11 (available: v1.1.0)
[INFO] [stderr]       Adding nix v0.24.3 (available: v0.30.1)
[INFO] [stderr]       Adding num-derive v0.3.3 (available: v0.4.2)
[INFO] [stderr]       Adding rand v0.8.5 (available: v0.9.2)
[INFO] [stderr]       Adding serde_with v1.14.0 (available: v3.16.1)
[INFO] [stderr]       Adding strum v0.24.1 (available: v0.27.2)
[INFO] [stderr]       Adding time v0.3.9 (available: v0.3.44)
[INFO] [stderr]       Adding time-macros v0.2.4 (available: v0.2.24)
[INFO] [stderr]       Adding toml v0.5.11 (available: v0.9.8)
[INFO] [stderr]       Adding unicode-width v0.1.14 (available: v0.2.2)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8202d110516c6bd87cee375e9a9b774db499015c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
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[INFO] [stderr]   Downloaded slotmap-fork-otter v1.0.2
[INFO] [stderr]   Downloaded strum_macros v0.24.3
[INFO] [stderr]   Downloaded toml v0.5.11
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:94a0c148923f5b2b52a63ef0eeb1882ad339ab61bce784c8077cbe41c61feb6c" "/opt/rustwide/cargo-home/bin/cargo" "+8202d110516c6bd87cee375e9a9b774db499015c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] be18eb82037dcbd6c032e7320dee32f7d6ea68147fe0b1f1f56b30fa993917ac
[INFO] running `Command { std: "docker" "start" "-a" "be18eb82037dcbd6c032e7320dee32f7d6ea68147fe0b1f1f56b30fa993917ac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "be18eb82037dcbd6c032e7320dee32f7d6ea68147fe0b1f1f56b30fa993917ac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "be18eb82037dcbd6c032e7320dee32f7d6ea68147fe0b1f1f56b30fa993917ac", kill_on_drop: false }`
[INFO] [stdout] be18eb82037dcbd6c032e7320dee32f7d6ea68147fe0b1f1f56b30fa993917ac
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:94a0c148923f5b2b52a63ef0eeb1882ad339ab61bce784c8077cbe41c61feb6c" "/opt/rustwide/cargo-home/bin/cargo" "+8202d110516c6bd87cee375e9a9b774db499015c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 01ab073a0e7811f2e6556f2658bb19a6c1e19e9f0ad2e916d72964e7fac87b7d
[INFO] running `Command { std: "docker" "start" "-a" "01ab073a0e7811f2e6556f2658bb19a6c1e19e9f0ad2e916d72964e7fac87b7d", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.103
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[INFO] [stderr]    Compiling serde_core v1.0.228
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[INFO] [stderr]    Compiling phf_shared v0.11.3
[INFO] [stderr]     Checking lazycell v1.3.0
[INFO] [stderr]     Checking same-file v1.0.6
[INFO] [stderr]    Compiling serde_json v1.0.145
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[INFO] [stderr]    Compiling regex v1.12.2
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[INFO] [stderr]    Compiling darling_core v0.13.4
[INFO] [stderr]    Compiling fehler-macros v1.0.0
[INFO] [stderr]    Compiling num-derive v0.3.3
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[INFO] [stderr]    Compiling derive-into-owned v0.2.0
[INFO] [stderr]     Checking fehler v1.0.0
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]    Compiling thiserror-impl v1.0.69
[INFO] [stderr]    Compiling enum-ordinalize v3.1.15
[INFO] [stderr]    Compiling extend v1.2.0
[INFO] [stderr]    Compiling derive_more v0.99.20
[INFO] [stderr]    Compiling darling_macro v0.13.4
[INFO] [stderr]    Compiling educe v0.4.23
[INFO] [stderr]    Compiling darling v0.13.4
[INFO] [stderr]    Compiling serde_with_macros v1.5.2
[INFO] [stderr]     Checking strum v0.24.1
[INFO] [stderr]     Checking pwd v1.4.0
[INFO] [stderr]     Checking serde_with v1.14.0
[INFO] [stderr]     Checking toml v0.5.11
[INFO] [stderr]     Checking rmp-serde v1.3.0
[INFO] [stderr]     Checking flexi_logger v0.22.6
[INFO] [stderr]     Checking otter-base v1.2.1
[INFO] [stderr]     Checking otter-support v1.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> debugmutex.rs:15:15
[INFO] [stdout]    |
[INFO] [stdout] 15 |   pub fn lock(&self) -> MutexGuard<T> {
[INFO] [stdout]    |               ^^^^^     ^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |               |
[INFO] [stdout]    |               the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 15 |   pub fn lock(&self) -> MutexGuard<'_, T> {
[INFO] [stdout]    |                                    +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> debugmutex.rs:15:15
[INFO] [stdout]    |
[INFO] [stdout] 15 |   pub fn lock(&self) -> MutexGuard<T> {
[INFO] [stdout]    |               ^^^^^     ^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |               |
[INFO] [stdout]    |               the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 15 |   pub fn lock(&self) -> MutexGuard<'_, T> {
[INFO] [stdout]    |                                    +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 47.20s
[INFO] running `Command { std: "docker" "inspect" "01ab073a0e7811f2e6556f2658bb19a6c1e19e9f0ad2e916d72964e7fac87b7d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "01ab073a0e7811f2e6556f2658bb19a6c1e19e9f0ad2e916d72964e7fac87b7d", kill_on_drop: false }`
[INFO] [stdout] 01ab073a0e7811f2e6556f2658bb19a6c1e19e9f0ad2e916d72964e7fac87b7d