[INFO] fetching crate ion-rs 0.3.1...
[INFO] checking ion-rs-0.3.1 against master#836c31742687ba4e2f857b5b698e1e9e6b67619c for pr-81789
[INFO] extracting crate ion-rs 0.3.1 into /workspace/builds/worker-13/source
[INFO] validating manifest of crates.io crate ion-rs 0.3.1 on toolchain 836c31742687ba4e2f857b5b698e1e9e6b67619c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+836c31742687ba4e2f857b5b698e1e9e6b67619c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate ion-rs 0.3.1
[INFO] finished tweaking crates.io crate ion-rs 0.3.1
[INFO] tweaked toml for crates.io crate ion-rs 0.3.1 written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate crates.io crate ion-rs 0.3.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+836c31742687ba4e2f857b5b698e1e9e6b67619c" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+836c31742687ba4e2f857b5b698e1e9e6b67619c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c0c840bf97bc19b9443cd290b7ac7a5c146122ab62f2ff2f37332fe5eea85d92
[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" "c0c840bf97bc19b9443cd290b7ac7a5c146122ab62f2ff2f37332fe5eea85d92", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c0c840bf97bc19b9443cd290b7ac7a5c146122ab62f2ff2f37332fe5eea85d92", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c0c840bf97bc19b9443cd290b7ac7a5c146122ab62f2ff2f37332fe5eea85d92", kill_on_drop: false }`
[INFO] [stdout] c0c840bf97bc19b9443cd290b7ac7a5c146122ab62f2ff2f37332fe5eea85d92
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+836c31742687ba4e2f857b5b698e1e9e6b67619c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7bf97e65dcbb785a836183b9151fa39c289bbd6632ef0f5436cb3a1e86d9796e
[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" "7bf97e65dcbb785a836183b9151fa39c289bbd6632ef0f5436cb3a1e86d9796e", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling version_check v0.9.2
[INFO] [stderr]    Compiling log v0.4.13
[INFO] [stderr]    Compiling syn v1.0.58
[INFO] [stderr]    Compiling paste v1.0.4
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling libloading v0.5.2
[INFO] [stderr]    Compiling thread_local v1.1.0
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling num-bigint v0.3.1
[INFO] [stderr]    Compiling cmake v0.1.45
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling libc v0.2.82
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking bytes v0.4.12
[INFO] [stderr]    Compiling aho-corasick v0.7.15
[INFO] [stderr]    Compiling nom v5.1.2
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling which v3.1.1
[INFO] [stderr]    Compiling clap v2.33.3
[INFO] [stderr]    Compiling clang-sys v0.29.3
[INFO] [stderr]    Compiling quote v1.0.8
[INFO] [stderr]    Compiling regex v1.4.3
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]    Compiling env_logger v0.7.1
[INFO] [stderr]    Compiling cexpr v0.4.0
[INFO] [stderr]     Checking bigdecimal v0.2.0
[INFO] [stderr]    Compiling bindgen v0.54.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.23
[INFO] [stderr]    Compiling delegate v0.5.1
[INFO] [stderr]     Checking thiserror v1.0.23
[INFO] [stderr]    Compiling ion-c-sys v0.4.3
[INFO] [stderr]     Checking ion-rs v0.3.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2m 08s
[INFO] running `Command { std: "docker" "inspect" "7bf97e65dcbb785a836183b9151fa39c289bbd6632ef0f5436cb3a1e86d9796e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7bf97e65dcbb785a836183b9151fa39c289bbd6632ef0f5436cb3a1e86d9796e", kill_on_drop: false }`
[INFO] [stdout] 7bf97e65dcbb785a836183b9151fa39c289bbd6632ef0f5436cb3a1e86d9796e