[INFO] fetching crate rust-expression 0.3.0...
[INFO] checking rust-expression-0.3.0 against try#4a04890980766cc79878135f5ade8c0c4321e943 for pr-65819
[INFO] extracting crate rust-expression 0.3.0 into /workspace/builds/worker-14/source
[INFO] validating manifest of crates.io crate rust-expression 0.3.0 on toolchain 4a04890980766cc79878135f5ade8c0c4321e943
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4a04890980766cc79878135f5ade8c0c4321e943" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rust-expression 0.3.0
[INFO] finished tweaking crates.io crate rust-expression 0.3.0
[INFO] tweaked toml for crates.io crate rust-expression 0.3.0 written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate crates.io crate rust-expression 0.3.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4a04890980766cc79878135f5ade8c0c4321e943" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "rustops/crates-build-env@sha256:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+4a04890980766cc79878135f5ade8c0c4321e943" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8990e9440ffd0367bbaae4df69bc014c5649943277ba3fc46ee6569ef0f2c44c
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "8990e9440ffd0367bbaae4df69bc014c5649943277ba3fc46ee6569ef0f2c44c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8990e9440ffd0367bbaae4df69bc014c5649943277ba3fc46ee6569ef0f2c44c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8990e9440ffd0367bbaae4df69bc014c5649943277ba3fc46ee6569ef0f2c44c", kill_on_drop: false }`
[INFO] [stdout] 8990e9440ffd0367bbaae4df69bc014c5649943277ba3fc46ee6569ef0f2c44c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+4a04890980766cc79878135f5ade8c0c4321e943" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7d4de7e2ec7ad8d93a73984030b8d551a2d405925ce2ba442060decd14a0c7f9
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "7d4de7e2ec7ad8d93a73984030b8d551a2d405925ce2ba442060decd14a0c7f9", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.91
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling ppv-lite86 v0.2.10
[INFO] [stderr]    Compiling siphasher v0.3.5
[INFO] [stderr]    Compiling syn v1.0.65
[INFO] [stderr]    Compiling ucd-trie v0.1.3
[INFO] [stderr]    Compiling maplit v1.0.2
[INFO] [stderr]    Compiling nix v0.17.0
[INFO] [stderr]     Checking tinyvec v1.1.1
[INFO] [stderr]     Checking smallstr v0.2.0
[INFO] [stderr]     Checking nom v5.1.2
[INFO] [stderr]    Compiling phf_shared v0.8.0
[INFO] [stderr]    Compiling pest v2.1.3
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling num-bigint v0.4.0
[INFO] [stderr]    Compiling num-rational v0.4.0
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]     Checking phf v0.8.0
[INFO] [stderr]     Checking unicode-normalization v0.1.17
[INFO] [stderr]    Compiling pest_meta v2.1.3
[INFO] [stderr]     Checking num-complex v0.4.0
[INFO] [stderr]     Checking float-cmp v0.8.0
[INFO] [stderr]    Compiling pest_generator v2.1.3
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]     Checking dirs-sys v0.3.5
[INFO] [stderr]     Checking dirs v1.0.5
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]     Checking dirs v2.0.2
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling rand_pcg v0.2.1
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling thiserror-impl v1.0.24
[INFO] [stderr]    Compiling pest_derive v2.1.0
[INFO] [stderr]    Compiling phf_generator v0.8.0
[INFO] [stderr]    Compiling phf_codegen v0.8.0
[INFO] [stderr]    Compiling terminfo v0.7.3
[INFO] [stderr]     Checking num v0.4.0
[INFO] [stderr]     Checking thiserror v1.0.24
[INFO] [stderr]     Checking rust-expression v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking mortal v0.2.2
[INFO] [stderr]     Checking linefeed v0.6.0
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 35.84s
[INFO] running `Command { std: "docker" "inspect" "7d4de7e2ec7ad8d93a73984030b8d551a2d405925ce2ba442060decd14a0c7f9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7d4de7e2ec7ad8d93a73984030b8d551a2d405925ce2ba442060decd14a0c7f9", kill_on_drop: false }`
[INFO] [stdout] 7d4de7e2ec7ad8d93a73984030b8d551a2d405925ce2ba442060decd14a0c7f9