[INFO] fetching crate lambda_calc 2.2.2...
[INFO] checking lambda_calc-2.2.2 against master#22572d0994593197593e2a1b7b18d720a9a349a7 for pr-126452-1
[INFO] extracting crate lambda_calc 2.2.2 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate lambda_calc 2.2.2 on toolchain 22572d0994593197593e2a1b7b18d720a9a349a7
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate lambda_calc 2.2.2
[INFO] finished tweaking crates.io crate lambda_calc 2.2.2
[INFO] tweaked toml for crates.io crate lambda_calc 2.2.2 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate crates.io crate lambda_calc 2.2.2 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" "+22572d0994593197593e2a1b7b18d720a9a349a7" "fetch" "--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]  Downloading crates ...
[INFO] [stderr]   Downloaded signal-hook v0.1.13
[INFO] [stderr]   Downloaded rustyline v5.0.0
[INFO] [stderr]   Downloaded constant_time_eq v0.1.3
[INFO] [stderr]   Downloaded failure_derive v0.1.5
[INFO] [stderr]   Downloaded unicode-width v0.1.5
[INFO] [stderr]   Downloaded rustyline-derive v0.2.0
[INFO] [stderr]   Downloaded dirs-sys v0.3.3
[INFO] [stderr]   Downloaded rand_core v0.4.0
[INFO] [stderr]   Downloaded synstructure v0.10.2
[INFO] [stderr]   Downloaded rustc-demangle v0.1.15
[INFO] [stderr]   Downloaded backtrace v0.3.33
[INFO] [stderr]   Downloaded failure v0.1.5
[INFO] [stderr]   Downloaded unicode-segmentation v1.3.0
[INFO] [stderr]   Downloaded cc v1.0.38
[INFO] [stderr]   Downloaded arc-swap v0.4.5
[INFO] [stderr]   Downloaded log v0.4.7
[INFO] [stderr]   Downloaded redox_users v0.3.0
[INFO] [stderr]   Downloaded syn v0.15.42
[INFO] [stderr]   Downloaded dirs v2.0.1
[INFO] [stderr]   Downloaded argon2rs v0.2.5
[INFO] [stderr]   Downloaded libc v0.2.60
[INFO] [stderr]   Downloaded backtrace-sys v0.1.31
[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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a1e2e86263af57c4a3c277881ed8b8df4cb6cb063cfa98dc8f7211377ba8f5a1
[INFO] running `Command { std: "docker" "start" "-a" "a1e2e86263af57c4a3c277881ed8b8df4cb6cb063cfa98dc8f7211377ba8f5a1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a1e2e86263af57c4a3c277881ed8b8df4cb6cb063cfa98dc8f7211377ba8f5a1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a1e2e86263af57c4a3c277881ed8b8df4cb6cb063cfa98dc8f7211377ba8f5a1", kill_on_drop: false }`
[INFO] [stdout] a1e2e86263af57c4a3c277881ed8b8df4cb6cb063cfa98dc8f7211377ba8f5a1
[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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3baf96b3c8b79e36372b8b41dc887ff8387671650a54b9a987f659b5718a145b
[INFO] running `Command { std: "docker" "start" "-a" "3baf96b3c8b79e36372b8b41dc887ff8387671650a54b9a987f659b5718a145b", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.60
[INFO] [stderr]     Checking cfg-if v0.1.9
[INFO] [stderr]    Compiling proc-macro2 v1.0.4
[INFO] [stderr]    Compiling bitflags v1.1.0
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling log v0.4.7
[INFO] [stderr]    Compiling syn v1.0.5
[INFO] [stderr]    Compiling memchr v2.2.1
[INFO] [stderr]    Compiling nix v0.14.1
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking arc-swap v0.4.5
[INFO] [stderr]     Checking unicode-width v0.1.5
[INFO] [stderr]     Checking unicode-segmentation v1.3.0
[INFO] [stderr]     Checking utf8parse v0.1.1
[INFO] [stderr]     Checking dirs-sys v0.3.3
[INFO] [stderr]     Checking signal-hook-registry v1.2.0
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]     Checking dirs v2.0.1
[INFO] [stderr]     Checking signal-hook v0.1.13
[INFO] [stderr]    Compiling rustyline-derive v0.2.0
[INFO] [stderr]     Checking rustyline v5.0.0
[INFO] [stderr]     Checking lambda_calc v2.2.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.72s
[INFO] running `Command { std: "docker" "inspect" "3baf96b3c8b79e36372b8b41dc887ff8387671650a54b9a987f659b5718a145b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3baf96b3c8b79e36372b8b41dc887ff8387671650a54b9a987f659b5718a145b", kill_on_drop: false }`
[INFO] [stdout] 3baf96b3c8b79e36372b8b41dc887ff8387671650a54b9a987f659b5718a145b